Works (181)

Updated: April 22nd, 2024 05:12

2023 article

Data-Driven Optimal Power Dispatch for Distributed Energy Resources in Radial Feeder using Multi-Stage Regression

IFAC PAPERSONLINE, Vol. 56, pp. 1552–1557.

By: R. Chakraborty n, M. Nazir* & A. Chakrabortty n

author keywords: Linear regression; Logistic regression; Optimal power flow; Smart distribution; systems; Distributed energy resources; Reactive power support.
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: April 15, 2024

2023 journal article

Designing Optimal Key Lengths and Control Laws for Encrypted Control Systems Based on Sample Identifying Complexity and Deciphering Time

IEEE TRANSACTIONS ON AUTOMATIC CONTROL, 68(4), 2183–2198.

By: K. Teranishi*, T. Sadamoto*, A. Chakrabortty n & K. Kogiso*

author keywords: Cryptography; Security; Control systems; Eavesdropping; Complexity theory; Homomorphic encryption; Estimation; Cyber-physical system; cyber-security; eavesdropping attack; encrypted control; homomorphic encryption; system identification
TL;DR: This article first connects the relationship between the security of cryptography and dynamical systems from a control-theoretic perspective and proposes a systematic method for designing both of an optimal key length to prevent system identification with a given precision within a given life span of systems. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: May 1, 2023

2023 article

Game-Theoretic Mixed H<sub>2</sub>/H<sub>∞</sub> Control with Sparsity Constraint for Multi-Agent Control Systems

2023 62ND IEEE CONFERENCE ON DECISION AND CONTROL, CDC, pp. 5526–5531.

By: F. Lian, A. Chakrabortty n & A. Duel-Hallen n

TL;DR: This work investigates a noncooperative game that accommodates different control performance criteria of the agents and proposes a best-response dynamics algorithm based on PALM, a centralized social optimization algorithm guaranteed to converge to a globally optimal sparse controller. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: March 25, 2024

2023 journal article

Hierarchical frequency and voltage control using prioritized utilization of inverter based resources

INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS, 144.

By: R. Chakraborty n, A. Chakrabortty n, E. Farantatos*, M. Patel*, H. Hooshyar & A. Darvishi

author keywords: Hierarchical control; Frequency control; Voltage control; Renewable energy; Inverter-based resources
TL;DR: It is shown that compared to conventional power flow APPF not only leads to a fairer balance between the dispatch of active and reactive power from the IBRs and the synchronous generators, but also limits the impact of any contingency from spreading out beyond its respective control area, thereby guaranteeing a better collective dynamic performance of the grid. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: October 11, 2022

2023 article

Power Flow Optimization Redesign for Transient Stability Enhancement

2023 IEEE POWER & ENERGY SOCIETY INNOVATIVE SMART GRID TECHNOLOGIES CONFERENCE, ISGT.

By: R. Chakraborty n, A. Chakrabortty n, D. Osipov* & J. Chow*

author keywords: Inverter-based resources; optimal power flow; stability index; transient stability; wind farms
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: June 5, 2023

2023 article

Reinforcement Learning based Approximate Optimal Control of Nonlinear Systems using Carleman Linearization

2023 AMERICAN CONTROL CONFERENCE, ACC, pp. 3362–3367.

By: J. Kar n, H. Bai* & A. Chakrabortty n

TL;DR: This work develops a policy iteration-based model-free reinforcement learning (RL) control for nonlinear systems with single input that provides solutions close to the optimal control resulting from the model-based Carleman controllers. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: March 11, 2024

2023 article

Robust and Scalable Game-theoretic Security Investment Methods for Voltage Stability of Power Systems

2023 62ND IEEE CONFERENCE ON DECISION AND CONTROL, CDC, pp. 7061–7066.

By: L. An*, P. Shukla*, A. Chakrabortty n & A. Duel-Hallen n

author keywords: Power Systems; Voltage stability; Load attacks; Game Theory; Security investment; Robust defense
TL;DR: A robust-defense sequential algorithm and a novel genetic algorithm that provides scalability to large-scale power system models and demonstrates that reliable and robust defense is feasible unless the operator's RPC investment resources are severely limited relative to the attacker's resources. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: March 25, 2024

2022 article

A Robust Stackelberg Game for Cyber-Security Investment in Networked Control Systems

Shukla, P., An, L., Chakrabortty, A., & Duel-Hallen, A. (2022, September 29). IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, Vol. 9.

By: P. Shukla n, L. An n, A. Chakrabortty n & A. Duel-Hallen n

author keywords: Investment; Security; Games; Uncertainty; Networked control systems; Hardware; Costs; Cyber-security; networked control systems (NCSs); power systems; resource allocation; robust game theory; Stackelberg game (SG); wide-area control
TL;DR: The proposed methods are robust to time-varying model uncertainties and thus are suitable for long-term security investment in realistic NCSs and computationally efficient genetic algorithms (GAs) are used to compute the optimal strategies of the attacker and the defender in realistic large power systems. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: September 30, 2022

2022 article

Data-Adaptive Retrofit Control for Power System Stabilizer Design

2022 IEEE 61ST CONFERENCE ON DECISION AND CONTROL (CDC), pp. 2210–2215.

By: T. Ishizaki*, M. Ito*, T. Kawaguchi* & A. Chakrabortty n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: May 1, 2023

2022 journal article

Learning Distributed Stabilizing Controllers for Multi-Agent Systems

IEEE CONTROL SYSTEMS LETTERS, 6, 301–306.

By: G. Jing n, H. Bai*, J. George*, A. Chakrabortty n & P. Sharma*

author keywords: Heuristic algorithms; Multi-agent systems; Power system dynamics; Approximation algorithms; Damping; System dynamics; Regulators; Reinforcement learning; linear quadratic regulator; optimal distributed control; multi-agent systems
TL;DR: This work addresses model-free distributed stabilization of heterogeneous continuous-time linear multi-agent systems using reinforcement learning (RL) and builds upon the results of the first algorithm, and extends it to distributed stabilized systems with predefined interaction graphs. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: July 19, 2021

2022 journal article

Optimal co-designs of communication and control in bandwidth-constrained cyber-physical systems

AUTOMATICA, 142.

By: N. Negi n & A. Chakrabortty n

author keywords: Linear optimal control; Structural optimization; Time-delay systems; Delay analysis; Bandwidth allocation
TL;DR: This work addresses the problem of sparsity-promoting optimal control of cyber-physical systems (CPSs) in the presence of communication delays by co-designing an optimal combination of these two delays and a sparse state-feedback controller while respecting a given bandwidth cost constraint. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 8, 2022

2021 article

Decomposability and Parallel Computation of Multi-Agent LQR

2021 AMERICAN CONTROL CONFERENCE (ACC), pp. 4527–4532.

By: G. Jing n, H. Bai*, J. George* & A. Chakrabortty n

author keywords: Reinforcement learning; linear quadratic regulator; multi-agent systems; decomposition
TL;DR: This work proposes a parallel RL scheme for a linear quadratic regulator (LQR) design in a continuous-time linear MAS and shows that if the MAS is homogeneous then this decomposition retains closed-loop optimality. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: November 1, 2021

2021 journal article

EFFICIENT ALGORITHMS FOR EIGENSYSTEM REALIZATION USING RANDOMIZED SVD

SIAM JOURNAL ON MATRIX ANALYSIS AND APPLICATIONS, 42(2), 1045–1072.

By: R. Minster, A. Saibaba*, J. Kar* & A. Chakrabortty*

author keywords: eigensystem realization algorithm; system identification; singular value decomposition; randomized algorithms
TL;DR: Computationally efficient algorithms for reducing the computational cost of the SVD step by using randomized subspace iteration and exploiting the block Hankel structure of the matrix are developed. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 16, 2021

2021 journal article

Enhancing Controllability of Wind Farms Against Parametric Resonance: A Series Compensation Approach

IEEE CONTROL SYSTEMS LETTERS, 5(4), 1447–1452.

By: T. Sadamoto* & A. Chakrabortty n

author keywords: Doubly fed induction generators; Controllability; Stators; Rotors; Wind farms; Resistance; Oscillators; Parametric resonance; DFIG; wind power; series compensation; controllability
TL;DR: By tuning the compensation and the controller gains of the DFIG, the controllability of the wind farm is shown to be improved drastically, and accordingly the inter-area oscillations on the grid side to be damped significantly. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: January 11, 2021

2021 journal article

Fast Online Reinforcement Learning Control Using State-Space Dimensionality Reduction

IEEE TRANSACTIONS ON CONTROL OF NETWORK SYSTEMS, 8(1), 342–353.

By: T. Sadamoto*, A. Chakrabortty n & J. Imura*

author keywords: Dimensionality reduction; large-scale networks; reinforcement learning (RL)
TL;DR: A fast reinforcement learning (RL) control algorithm that enables online control of large-scale networked dynamic systems by constructing a compressed state vector by projecting the measured state through a projective matrix. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: April 26, 2021

2021 article

LSTM based Denial-of-Service Resiliency for Wide-Area Control of Power Systems

2021 IEEE PES INNOVATIVE SMART GRID TECHNOLOGY EUROPE (ISGT EUROPE 2021), pp. 313–317.

By: J. Kar n & A. Chakrabortty n

TL;DR: A long short-term memory network (LSTM) is used and predicts the magnitudes of the corresponding missing states in a completely decentralized fashion using offline training and online data updates to resolve denial-of-Service (DoS) attacks in wide-area control loops of electric power systems. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: April 4, 2022

2021 journal article

Model-Free Optimal Control of Linear Multiagent Systems via Decomposition and Hierarchical Approximation

IEEE TRANSACTIONS ON CONTROL OF NETWORK SYSTEMS, 8(3), 1069–1081.

By: G. Jing n, H. Bai*, J. George* & A. Chakrabortty n

author keywords: Decomposition; hierarchical control; large-scale networks; linear quadratic regulator (LQR); model-free reinforcement learning (RL)
TL;DR: A hierarchical controller is proposed that adheres to a particular structure as specified by the inter-agent coupling in the objective function and by the decomposition strategy, and mathematical formulations are established to find a decomposition that minimizes required communication links or reduces the optimality gap. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: October 4, 2021

2021 journal article

Model-based and model-free designs for an extended continuous-time LQR with exogenous inputs

SYSTEMS & CONTROL LETTERS, 154.

By: S. Mukherjee*, H. Bai* & A. Chakrabortty n

author keywords: Linear quadratic regulator; Exogenous inputs; Matrix differential equations; Reinforcement learning
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 2, 2021

2021 journal article

Modeling and Quantifying the Impact of Wind Penetration on Slow Coherency of Power Systems

IEEE TRANSACTIONS ON POWER SYSTEMS, 36(2), 1002–1012.

By: S. Mukherjee n, A. Chakrabortty n & S. Babaei*

author keywords: Power system dynamics; Power system stability; Wind farms; Laplace equations; Doubly fed induction generators; Wind power generation; Doubly-fed induction generators; eigen-vectors; singular perturbation; slow coherency; wind power system
TL;DR: A theoretical framework to quantify this modification, and an equivalent Laplacian matrix to compute the modified coherent areas are developed and compared with measurement-based principal component analysis to substantiate the derivations. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: March 29, 2021

2021 article

Modeling and Quantifying the Impact of Wind Penetration on Slow Coherency of Power Systems

2021 IEEE POWER & ENERGY SOCIETY GENERAL MEETING (PESGM).

By: S. Mukherjee*, A. Chakrabortty n & S. Babaei

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: July 26, 2022

2021 article

Necessity of Lossless Transmission and Convexity of Potential Energy Function for Equilibrium Independent Passivity of Power Systems

2021 60TH IEEE CONFERENCE ON DECISION AND CONTROL (CDC), pp. 4242–4247.

By: T. Ishizaki* & A. Chakrabortty n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: May 31, 2022

2021 article

Nonlinear Koopman Observability Measures on Subsets of Power System State Variables

2021 60TH IEEE CONFERENCE ON DECISION AND CONTROL (CDC), pp. 4222–4227.

By: M. Alfredo Hernandez-Ortega*, A. Chakrabortty n, A. Roman Messina & C. Morales Rergis*

UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: May 31, 2022

2021 journal article

Optimal Power Flow Design for Enhancing Dynamic Performance: Potentials of Reactive Power

IEEE TRANSACTIONS ON SMART GRID, 12(1), 599–611.

By: M. Inoue*, T. Sadamoto*, M. Arahata* & A. Chakrabortty n

author keywords: Power flow design; reactive power design; damping performance
TL;DR: A new optimal power flow (OPF) design that not only optimizes fuel cost but also enhances dynamic performance of a power system, improving disturbance attenuation and damping. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: January 19, 2021

2021 journal article

Reduced-dimensional reinforcement learning control using singular perturbation approximations

AUTOMATICA, 126.

By: S. Mukherjee n, H. Bai* & A. Chakrabortty n

author keywords: Reinforcement learning; Linear quadratic regulator; Singular perturbation; Model-free control; Model reduction
TL;DR: A model-free, reduced-dimensional reinforcement learning (RL) based optimal control designs for linear time-invariant singularly perturbed (SP) systems and develops both centralized and cluster-wise block-decentralized RL controllers for such networks, in reduced dimensions. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: April 5, 2021

2021 journal article

Scalable Designs for Reinforcement Learning-Based Wide-Area Damping Control

IEEE TRANSACTIONS ON SMART GRID, 12(3), 2389–2401.

By: S. Mukherjee n, A. Chakrabortty n, H. Bai*, A. Darvishi* & B. Fardanesh*

author keywords: Generators; Phasor measurement units; Power system stability; Power system dynamics; Damping; Load modeling; Oscillators; Reinforcement learning; model-free control; oscillation damping; singular perturbation; neural observer
TL;DR: This article discusses how techniques from reinforcement learning can be exploited to transition to a model-free and scalable wide-area oscillation damping control of power grids by employing ideas from model reduction. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: May 24, 2021

2021 article

Wide-Area Control of Power Systems

Chakrabortty, A. (2021, March). IEEE ELECTRIFICATION MAGAZINE, Vol. 9, pp. 45–52.

By: A. Chakrabortty n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: March 22, 2021

2020 journal article

Differential Privacy for Network Identification

IEEE TRANSACTIONS ON CONTROL OF NETWORK SYSTEMS, 7(1), 266–277.

By: V. Katewa*, A. Chakrabortty n & V. Gupta*

author keywords: Cyber-security; differential privacy (DP); monitoring; multiagent system; topology identification
TL;DR: The noise is designed carefully by characterizing the sensitivity of the system so that it limits the intruder from inferring any incremental change in the sensitive parameters, thereby protecting their privacy, and results in marginal degradation in eigenvalue estimation. (via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: April 14, 2020

2020 article

Guest Editorial: Next Generation of Synchrophasor-based Power System Monitoring, Operation and Control

Zhao, J., Srivastava, A., Chakrabortty, A., Terzija, V., Kamwa, I., Bi, T., & Zhang, Y. (2020, October 2). IET GENERATION TRANSMISSION & DISTRIBUTION, Vol. 14, pp. 3943–3944.

By: J. Zhao, A. Srivastava, A. Chakrabortty, V. Terzija, I. Kamwa, T. Bi, Y. Zhang

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: October 12, 2020

2020 journal article

Improving Controllability and Plug-and-Play Operation of Wind Farms Using B2B Converters

IEEE CONTROL SYSTEMS LETTERS, 4(2), 379–384.

By: T. Sadamoto* & A. Chakrabortty n

author keywords: Doubly fed induction generators; Controllability; Wind farms; Power system stability; Stators; Rotors; Eigenvalues and eigenfunctions; DFIG; stability; controllability; plug-and-play control; wind power
TL;DR: It is shown that a critical factor deciding the controllability of a doubly fed induction generator (DFIG) in a wind power system is the ratio of its leakage reactance to resistance, and it is proposed to add a back-to-back (B2B) converter in the stator line of the DFIG. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: September 7, 2020

2020 journal article

Measurement-driven optimal control of utility-scale power systems: A New York State grid perspective

INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS, 115.

By: S. Mukherjee n, S. Babaei*, A. Chakrabortty n & B. Fardanesh

author keywords: Inter-area oscillations; Wide-Area Damping Controller (WADC); Measurement based LQG; FACTS; Damping control for an utility-scale power system
TL;DR: The effectiveness of the control performance is shown using the non-linear simulations under different contingencies provided by the New York Independent System Operator (NYISO). (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: November 11, 2019

2020 journal article

Model-Free Reinforcement Learning of Minimal-Cost Variance Control

IEEE CONTROL SYSTEMS LETTERS, 4(4), 916–921.

By: G. Jing n, H. Bai*, J. George* & A. Chakrabortty n

author keywords: Mathematical model; Heuristic algorithms; Stochastic processes; Iterative methods; Riccati equations; Computational complexity; Optimal control; Reinforcement learning; stochastic dynamic systems; variance control; coupled Riccati equations
TL;DR: Two reinforcement learning algorithms for solving a class of coupled algebraic Riccati equations for linear stochastic dynamic systems with unknown state and input matrices where the input matrix can be estimated at the very first iteration are proposed. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: July 13, 2020

2020 journal article

Sparsity-promoting optimal control of cyber-physical systems over shared communication networks

AUTOMATICA, 122.

By: N. Negi n & A. Chakrabortty n

author keywords: Linear optimal control; Structural optimization; Time-delay systems; Delay analysis; Bandwidth allocation
TL;DR: A set of sparse H2 control designs under time-delays in the feedback and fair sharing of bandwidth among users under mixed-integer linear program (MILP) constraints is presented. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: January 11, 2021

2019 conference paper

A Cyber-Security Investment Game for Networked Control Systems

Philadelphia: American Control Conference.

By: P. Shukla, A. Chakrabortty & A. Duel-Hallen

Source: NC State University Libraries
Added: March 24, 2019

2019 conference paper

A Measurement-based Adaptive Power System Damping Control Design using ERA-driven Neural Observer and Reinforcement Learning

IEEE PES General Meeting. Atlanta, GA.

By: S. Mukherjee, A. Chakrabortty & H. Bai

Source: NC State University Libraries
Added: March 24, 2019

2019 conference paper

A passivity-based globally stabilizing PI controller for primary control of radial power distribution systems

Philadelphia: American Control Conference.

By: A. Milani, R. Cisneros, A. Chakrabortty & I. Husain

Source: NC State University Libraries
Added: March 24, 2019

2019 review

A systems and control perspective of CPS security

[Review of ]. ANNUAL REVIEWS IN CONTROL, 47, 394–411.

By: S. Dibaji*, M. Pirani*, D. Flamholz*, A. Annaswamy*, K. Johansson* & A. Chakrabortty n

author keywords: Cyber-physical systems; Cyber-security; Cyber-physical security; Secure control; Resilient control
TL;DR: A survey of systems and control methods proposed for the security of Cyber-Physical Systems, a field that has recently garnered increased attention, classifies these methods into three categories based on the type of defense proposed against the cyberattacks: prevention, resilience, and detection & isolation. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: July 29, 2019

2019 conference paper

Block-Decentralized Model-Free Reinforcement Learning Control of Two Time-Scale Networks

Philadelphia: American Control Conference.

By: S. Mukherjee, A. Chakrabortty & H. Bai

Source: NC State University Libraries
Added: March 24, 2019

2019 conference paper

Coordinated Control of Energy Storage in Networked Microgrids under Unpredicted Load Demands

Philadelphia: American Control Conference.

By: M. Khan, R. Cisneros, A. Chakrabortty & I. Husain

Source: NC State University Libraries
Added: March 24, 2019

2019 journal article

Dynamic Modeling, Stability, and Control of Power Systems with Distributed Energy Resources

IEEE Control Systems Magazine, 39(2), 34–65.

By: T. Sadamoto*, A. Chakrabortty n, T. Ishizaki* & J. Imura*

TL;DR: The shift of energy supply from large central generating stations to smaller producers, such as wind farms, solar photovoltaic (PV) farms, rooftop PV systems, and energy-storage systems collectively known as distributed energy resources (DERs) or inverter-based resources, is accelerating at a rapid pace. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, NC State University Libraries
Added: March 9, 2019

2019 conference paper

Learning Power System Dynamic Signatures using LSTM-Based Deep Neural Network : A Prototype Study on the New York State Grid

IEEE PES General Meeting. Atlanta, GA.

By: S. Mukherjee, A. Darvishi, A. Chakrabortty & B. Fardanesh

Source: NC State University Libraries
Added: March 24, 2019

2019 conference paper

Online Tuning of Cloud-based Wide-Area Controllers with Variations in Network Traffic

IEEE PES General Meeting. Atlanta, GA.

By: H. Ni, A. Chakrabortty & Y. Xin

Source: NC State University Libraries
Added: March 24, 2019

2019 article

Research Challenges for Design and Implementation of Wide-Area Control

SMART GRID CONTROL: OVERVIEW AND RESEARCH OPPORTUNITIES, pp. 165–172.

By: A. Chakrabortty n

TL;DR: The 2003 Northeast blackout uncovered the vulnerability of the US power system, and manifested the urgent need for real-time state monitoring and control of the grid leading to the development of the wide-area measurement systems (WAMS) technology. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: March 11, 2019

2019 book

Smart Grid Control: Overview and Research Opportunities

In SMART GRID CONTROL: OVERVIEW AND RESEARCH OPPORTUNITIES (pp. 1–288).

By: J. Stoustrup*, A. Annaswamy*, A. Chakrabortty n & Z. Qu*

Sources: Web Of Science, NC State University Libraries
Added: March 11, 2019

2019 chapter

Smart Grid Simulation and Control

In Power Electronics in Renewable Energy Systems and Smart Grid. IEEE Press.

By: A. Chakrabortty & A. Bose

Source: NC State University Libraries
Added: March 9, 2019

2019 conference paper

Sparse Wide-Area Control of Power Systems using Data-driven Reinforcement Learning

Philadelphia: American Control Conference.

By: A. Dizche, A. Chakrabortty & A. Duel-Hallen

Source: NC State University Libraries
Added: March 24, 2019

2018 conference paper

A Hierarchical Design for Damping Control of Wind-Integrated Power Systems Considering Heterogeneous Wind Farm Dynamics

2018 IEEE Conference on Control Technology and Applications (CCTA). Presented at the 2018 IEEE Conference on Control Technology and Applications (CCTA).

By: S. Mukherjee*, N. Xue* & A. Chakrabortty*

Event: 2018 IEEE Conference on Control Technology and Applications (CCTA)

TL;DR: The approach is to group all turbines in a row as a cluster, design a cluster-level aggregate controller by averaging of states, make these aggregate controllers exchange average state information through a local communication network, and thereafter project the aggregate controller back to the original WTGs for implementation. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2018 conference paper

A Measurement-Based Approach for Optimal Damping Control of the New York State Power Grid

2018 IEEE Power & Energy Society General Meeting (PESGM). Presented at the 2018 IEEE Power & Energy Society General Meeting (PESGM).

By: S. Mukherjee n, S. Babaei & A. Chakrabortty n

Event: 2018 IEEE Power & Energy Society General Meeting (PESGM)

TL;DR: This paper presents a supplementary controller design for the state-of-the-art Flexible AC Transmission System (FACTS) facility in New York State (NYS) power grid from a completely measurement based perspective. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2018 journal article

Control Inversion: A Clustering-Based Method for Distributed Wide-Area Control of Power Systems

IEEE Transactions on Control of Network Systems, 1–1.

By: N. Xue n & A. Chakrabortty n

author keywords: Clustering; damping; model reduction; optimal control; wide-area control (WAC)
TL;DR: A control design called control inversion is presented that bypasses both the scalability of design and complexity of implementation of wide-area WAC using the idea of clustering. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 9, 2019

2018 conference paper

Distributed Learning of Mode Shapes in Power System Models

2018 IEEE Conference on Decision and Control (CDC). Presented at the 2018 IEEE Conference on Decision and Control (CDC).

By: A. Gusrialdi*, A. Chakrabortty n & Z. Qu*

Event: 2018 IEEE Conference on Decision and Control (CDC)

TL;DR: This work addresses the problem of distributed estimation of eigenvectors for power system models using online phasor measurements using decentralized Kalman filters to identify a reduced-order model of the system in a completely distributed way. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2018 journal article

Distributed wide-area control of power system oscillations under communication and actuation constraints

CONTROL ENGINEERING PRACTICE, 74, 132–143.

By: A. Jain n, A. Chakrabortty n & E. Biyik*

author keywords: Distributed control; Wide-area control; Predictive optimization; Oscillation damping; Participation factors
TL;DR: A distributed Model Predictive Control design is presented for inter-area oscillation damping in power systems under two critical cyber–physical constraints — namely, communication constraints that lead to sparsification of the underlying communication network, and actuation constraints that respect the saturation limits of generator controllers. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2018 article

Dynamic Modeling and Feasibility Analysis of a Solid-State Transformer-Based Power Distribution System

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, Vol. 54, pp. 551–562.

By: M. Khan n, A. Milani n, A. Chakrabortty n & I. Husain n

author keywords: Dynamic system modeling; equilibrium analysis; IEEE 34 bus simulation; microgrid and energy storage; solid-state transformer (SST)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2018 journal article

Equilibrium Point Analysis and Power Sharing Methods for Distribution Systems Driven by Solid-State Transformers

IEEE TRANSACTIONS ON POWER SYSTEMS, 33(2), 1473–1483.

By: A. Milani n, M. Khan n, A. Chakrabortty n & I. Husain n

author keywords: Equilibrium; power distribution system; power sharing; solid-state transformer (SST)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2018 journal article

Graph-Theoretic Analysis of Power Systems

PROCEEDINGS OF THE IEEE, 106(5), 931–952.

author keywords: Graph theory; modeling; power systems; stability; structured control; topology
TL;DR: An overview of the applications of graph theory in power system modeling, dynamics, coherency, and control is presented and the idea of generator and bus aggregation whereby dynamic equivalent models of large power grids can be developed while retaining the concept of a "bus" in the network graph of the equivalent model is introduced. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2018 conference paper

Hierarchical H 2 Control of Large-Scale Network Dynamic Systems

2018 Annual American Control Conference (ACC). Presented at the 2018 Annual American Control Conference (ACC), Milwaukee, WI.

By: N. Xue n & A. Chakrabortty n

Event: 2018 Annual American Control Conference (ACC) at Milwaukee, WI

TL;DR: A special class of structural constraints is presented such that the standard $\mathcal{H}_{2}$ design satisfies a quadratic invariance condition, and therefore can be reformulated as a convex problem. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: April 13, 2019

2018 article

Introduction to Koopman Mode Decomposition for Data-Based Technology of Power System Nonlinear Dynamics

IFAC PAPERSONLINE, Vol. 51, pp. 327–332.

By: Y. Susuki & A. Chakrabortty

author keywords: Power systems; Nonlinear systems; Operators; Data processing; Koopman operator; Koopman mode
Sources: Web Of Science, NC State University Libraries
Added: December 31, 2018

2018 journal article

Introduction to Koopman Mode Decomposition for Data-Based Technology of Power System Nonlinear Dynamics

IFAC-PapersOnLine, 51(28), 327–332.

By: Y. Susuki* & A. Chakrabortty n

TL;DR: This work presents the research challenges to go beyond the conventional linear framework by focusing on Koopman Mode Decomposition (KMD), which is a nonlinear generalization of linear oscillatory modes guided by operator theory of nonlinear dynamical systems. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: January 25, 2020

2018 conference paper

On Model-Free Reinforcement Learning of Reduced-Order Optimal Control for Singularly Perturbed Systems

2018 IEEE Conference on Decision and Control (CDC). Presented at the 2018 IEEE Conference on Decision and Control (CDC).

By: S. Mukherjee n, H. Bai* & A. Chakrabortty n

Event: 2018 IEEE Conference on Decision and Control (CDC)

TL;DR: A variant of Adaptive Dynamic Programming (ADP) that employs only the slow states of this SP model to learn a reduced-order adaptive optimal controller and uses approximation theorems from singular perturbation theory to establish sub-optimality of the learned controller, and to guarantee closed-loop stability. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2018 conference paper

Online Detection and Quantification of Transient Instability using Lyapunov Exponents from PMU Data

2018 North American Power Symposium (NAPS). Presented at the 2018 North American Power Symposium (NAPS).

By: T. Gubitz n, K. Sico* & A. Chakrabortty n

Event: 2018 North American Power Symposium (NAPS)

TL;DR: An improved LE algorithm for use in real-time streaming applications for short-term voltage instability detection and three variants to the traditional LE calculation, which estimate the final value of the LE and accurately quantify the stability of a stable power system are proposed. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2018 journal article

Optimization Algorithms for Catching Data Manipulators in Power System Estimation Loops

IEEE Transactions on Control Systems Technology, 1–16.

By: M. Liao n & A. Chakrabortty n

author keywords: Alternating direction multiplier method (ADMM); data corruption; distributed optimization; malicious attacks; oscillation monitoring; power systems
TL;DR: A set of algorithms that can detect the identities of malicious data manipulators in distributed optimization loops for estimating oscillation modes in large-power system models using simulations of the IEEE 68-bus power system model are developed. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 9, 2019

2018 journal article

Retrofit Control of Wind-Integrated Power Systems

IEEE TRANSACTIONS ON POWER SYSTEMS, 33(3), 2804–2815.

By: T. Sadamoto*, A. Chakrabortty n, T. Ishizaki* & J. Imura*

author keywords: Wind integration; small-signal stability; decentralized control; damping; DFIG; retrofit control
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2018 conference paper

Routing Path Optimization for Regulating Delays in Wide-Area Controllers Implemented over Cloud Networks

IEEE PES General Meeting. Portland, OR.

By: H. Ni, M. Rahouti, A. Chakrabortty, K. Xiong & Y. Xin

Source: NC State University Libraries
Added: March 24, 2019

2018 conference paper

Secure Control of Wide-Area Power Systems: Confidentiality and Integrity Threats

2018 IEEE Conference on Decision and Control (CDC). Presented at the 2018 IEEE Conference on Decision and Control (CDC).

By: S. Dibaji*, M. Pirani*, A. Annaswamy*, K. Johansson* & A. Chakrabortty n

Event: 2018 IEEE Conference on Decision and Control (CDC)

TL;DR: A resilient information retrieval approach is leveraged which recovers the true state variables despite the malicious attacks on both virtual machines and communication links and is used to detect possible attacks on phasor measurement units (PMU) in the next time-step. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2018 book

Smart Grid Control: Opportunities and Research Challenges

MA: Springer.

Aranya Chakrabortty

Ed(s): A. Annaswamy, J. Stoustrup, A. Chakrabortty & Z. Qu

Source: NC State University Libraries
Added: March 27, 2019

2018 conference paper

Sparse Optimal Control of LTI Systems under Sparsity-Dependent Delays

2018 Annual American Control Conference (ACC). Presented at the 2018 Annual American Control Conference (ACC).

By: N. Negi n & A. Chakrabortty n

Event: 2018 Annual American Control Conference (ACC)

TL;DR: Simulation results illustrate the effectiveness of the proposed approach in finding sparse feedback matrices that achieve a low $\mathcal{H}_{2}$ norm while guaranteeing stability of the closed-loop delayed system. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2018 conference paper

Sparse and Distributed Control of Wide-Area Power Systems with Large Communication Delays

2018 Annual American Control Conference (ACC). Presented at the 2018 Annual American Control Conference (ACC).

By: S. Dibaji*, A. Annaswamy*, A. Chakrabortty n & A. Hussain

Event: 2018 Annual American Control Conference (ACC)

TL;DR: A sparse and distributed optimal control strategy is proposed for wide-area control of power systems in the presence of large network delays by zeroing out the gains that correspond to measurements that are yet to arrive and using a virtual sparsity concept. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2018 conference paper

Sparsity-Constrained Mixed H 2 /H ∞ Control

Proceedings of the Annual American Control Conference (ACC), 6253–6258,

By: F. Lian n, A. Chakrabortty n, F. Wu n & A. Duel-Hallen n

Event: 2018 Annual American Control Conference (ACC) at Milwaukee, WI

TL;DR: An algorithm for designing sparsity-constrained controllers for linear time-invariant systems with model uncertainties using a mixed H 2/Hfty objective that guarantees a predetermined level of sparsity while maintaining acceptable performance as well as robustness to uncertainties in the open-loop model is proposed. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries, ORCID
Added: April 13, 2019

2018 conference paper

Structurally Constrained `1-Sparse Control of Power Systems: Online Design and Resiliency Analysis

2018 Annual American Control Conference (ACC). Presented at the 2018 Annual American Control Conference (ACC).

By: A. Jain n, A. Chakrabortty n & E. Biyik*

Event: 2018 Annual American Control Conference (ACC)

TL;DR: A sparse Linear Quadratic Regulator (LQR) design for damping oscillations in wide-area power system networks and an algorithm is provided where the designed sparse controller is also used to enhance the resiliency of the closed-loop system against denial-of-service (DoS) attacks. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2018 conference paper

Synchronization and Aggregation of Nonlinear Power Systems with Consideration of Bus Network Structures

2018 European Control Conference (ECC). Presented at the 2018 17th European Control Conference (ECC).

Event: 2018 17th European Control Conference (ECC)

TL;DR: It is shown how an exact reduced model can be obtained by aggregating the generators and associated buses in the network when the original system is synchronized with respect to a partition, provided that the initial condition respects the partition. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2018 chapter

Wide-Area Communication and Control: A Cyber-Physical Perspective

In Smart Grid Control (pp. 139–164).

By: A. Chakrabortty n

TL;DR: For several decades, the traditional mindset for controlling large-scale power systems has been limited to local output feedback control, which means that controllers installed within the operating region of any utility company typically use measurements available only from inside that region for feedback. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, Crossref, NC State University Libraries
Added: March 9, 2019

2017 journal article

A delay-aware cyber-physical architecture for wide-area control of power systems

CONTROL ENGINEERING PRACTICE, 60, 171–182.

By: D. Soudbakhsh*, A. Chakrabortty n & A. Annaswamy*

author keywords: Power systems; Network control systems; Wide-area control; Delay-aware control
TL;DR: The results clearly demonstrate that the proposed controller recovers the ideal system performance even in the presence of large intra-area and inter-area delays with a small amount of additional control effort. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2017 conference paper

A retrofitting-based supplementary controller design for enhancing damping performance of wind power systems

2017 American Control Conference (ACC). Presented at the 2017 American Control Conference (ACC).

By: T. Sadamoto*, A. Chakrabortty n, T. Ishizaki* & J. Imura*

Event: 2017 American Control Conference (ACC)

TL;DR: This paper proposes a new retrofit control technique where an additional controller is designed at the doubly-fed induction generator site inside the wind power plant that can efficiently enhance the damping performance of the system variable despite very high values of wind penetration. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2017 conference paper

An online structurally constrained LQR design for damping oscillations in power system networks

2017 American Control Conference (ACC). Presented at the 2017 American Control Conference (ACC).

By: A. Jain n, A. Chakrabortty n & E. Biyik*

Event: 2017 American Control Conference (ACC)

TL;DR: A parallelized constrained linear quadratic regulator (LQR) design is proposed to balance the tradeoff between performance and the level of sparsity induced in the network. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2017 journal article

Delay-Aware Control Designs of Wide-Area Power Networks * *This work was supported in part by NSF grant ECS 1054394.

IFAC-PapersOnLine, 50(1), 79–84.

By: S. Dibaji*, Y. Yildiz*, A. Annaswamy*, A. Chakrabortty n & D. Soudbakhsh*

author keywords: Power systems stability; Wide-area measurement systems; Optimal operation and control of power systems; Cyber-physical Systems; Systems with time-delays
TL;DR: The design is based on a delay-aware architecture and cloud computing has been proposed for damping wide-area oscillations and accommodate possibly large delays in the network and take into account their values in the designs. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2017 conference paper

Distributed cyber-physical algorithms for wide-area control of power systems

2017 51st Annual Conference on Information Sciences and Systems (CISS).

By: A. Chakrabortty n

TL;DR: This talk will propose a distributed communication and computational architecture, and its associated distributed optimal control algorithms, for one of the most critical applications run by utility companies - namely, wide-area control of power flow oscillations following small- signal and large-signal disturbances in the grid. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2017 journal article

Game-Theoretic Multi-Agent Control and Network Cost Allocation Under Communication Constraints

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 35(2), 330–340.

By: F. Lian n, A. Chakrabortty n & A. Duel-Hallen n

Event: at USA

author keywords: Game theory; cost allocation; smart grid; sparsity; distributed optimization; multi-agent systems
TL;DR: Using the proposed sparsity-constrained distributed social optimization and noncooperative game algorithms, a method is developed to allocate the costs of the communication infrastructure fairly and according to the agents’ diverse needs for feedback and cooperation. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018

2017 journal article

Identification and Predictive Analysis of a Multi-Area WECC Power System Model Using Synchrophasors

IEEE Transactions on Smart Grid, 8(4), 1977–1986.

By: G. Chavan n, M. Weiss n, A. Chakrabortty n, S. Bhattacharya n, A. Salazar* & F. Ashrafi*

Contributors: G. Chavan n, M. Weiss n, A. Chakrabortty n, S. Bhattacharya n, A. Salazar* & F. Ashrafi*

author keywords: Model reduction; identification; swing equations; synchrophasors; model validation; predictive analysis
TL;DR: An algorithm is presented by which this reduced-order five-machine dynamic equivalent electro-mechanical model of the WECC 500 kV power system network can be used to determine the criticality of line loss events within any area based on the divergence of load flow. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Crossref, NC State University Libraries, ORCID
Added: March 9, 2019

2017 conference paper

Identifying data-manipulators in power system mode estimation loops with noisy measurements

2017 American Control Conference (ACC). Presented at the 2017 American Control Conference (ACC).

By: M. Liao* & A. Chakrabortty*

Event: 2017 American Control Conference (ACC)

TL;DR: An algorithm that can detect the identity of false data-injection attackers in distributed optimization loops for estimating oscillation modes in power system models when the measurements used for the estimation are noisy is developed. (via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2017 conference paper

Infusing Autonomy in Power Distribution Networks using Smart Transformers

2017 IEEE conference on control technology and applications (CCTA 2017), 1110–1116.

By: A. Chakrabortty n

TL;DR: A suite of new control and learning approaches that exploit different ‘Internet of things’ functionalities embedded inside the SSTs are proposed, and thereby guarantee at-scale resilience, reliability, fault-tolerance, and autonomy for tomorrow's distribution networks. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2017 conference paper

LQG control of large networks: A clustering-based approach

2017 American Control Conference (ACC). Presented at the 2017 American Control Conference (ACC).

By: N. Xue n & A. Chakrabortty n

Event: 2017 American Control Conference (ACC)

TL;DR: A Linear Quadratic Gaussian (LQG) control design for large-dimensional network dynamic systems using the idea of network clustering by clustering the network nodes using structural properties of its closed-loop transfer matrix. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2017 review

Smart Grid Simulations and Their Supporting Implementation Methods

[Review of ]. PROCEEDINGS OF THE IEEE, 105(11), 2220–2243.

By: A. Chakrabortty n & A. Bose*

author keywords: Cyber-physical systems; electric markets; modeling; operations; planning; power electronics; simulations; stability
TL;DR: A vision on how simulations and their supporting implementation methods can help in understanding the evolving behavior of tomorrow’s power networks as a truly intelligent cyber-physical system is provided. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2017 journal article

Structured Identification of Reduced-Order Models of Power Systems in a Differential-Algebraic Form

IEEE Transactions on Power Systems, 32(1), 198–207.

By: S. Nabavi* & A. Chakrabortty n

author keywords: Model reduction; nonlinear least squares; swing equation; synchrophasors; system identification
Sources: Crossref, NC State University Libraries, Web Of Science
Added: August 6, 2018

2016 journal article

A Graph-Theoretic Condition for Global Identifiability of Weighted Consensus Networks

IEEE TRANSACTIONS ON AUTOMATIC CONTROL, 61(2), 497–502.

By: S. Nabavi n & A. Chakrabortty n

author keywords: Global identifiability; graph Laplacian matrix; Markov parameters
TL;DR: A sensor placement algorithm is proposed that guarantees identifiability of the edge-weights of a class of linear network dynamic systems exhibiting continuous-time weighted consensus protocols. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 conference paper

A Round-robin ADMM algorithm for identifying data-manipulators in power system estimation

2016 american control conference (acc), 3539–3544.

By: M. Liao n & A. Chakrabortty n

TL;DR: An algorithm that can detect the identity of false data-injection attackers in distributed optimization loops for estimating oscillation modes in large power system models is developed, and by tracking the evolution of this consensus variable it is possible to identify which estimator is malicious. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2016 conference paper

A resilient software infrastructure for wide-area measurement systems

2016 ieee power and energy society general meeting (pesgm).

By: T. Qian*, H. Xu*, J. Zhang n, A. Chakrabortty n, F. Mueller* & Y. Xin*

TL;DR: This work designs and implements a software infrastructure to estimate power grid oscillation modes based on real-time data collected from Phasor Measurement Units (PMUs), and deploys a distributed algorithm on the basis of the Prony algorithm and the Alternating Directions Method of Multipliers (ADMM). (via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2016 journal article

A wide-area SVC controller design for inter-area oscillation damping in WECC based on a structured dynamic equivalent model

ELECTRIC POWER SYSTEMS RESEARCH, 133, 1–11.

By: M. Weiss n, B. Abu-Jaradeh*, A. Chakrabortty n, A. Jamehbozorg*, F. Habibi-Ashrafi* & A. Salazar*

author keywords: Wide-area control; Synchrophasors; Static VAr Compensator (SVC); Dynamic equivalencing; Inter-area oscillations; SVC droop
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 journal article

ADMM Optimization Strategies for Wide-Area Oscillation Monitoring in Power Systems Under Asynchronous Communication Delays

IEEE TRANSACTIONS ON SMART GRID, 7(4), 2123–2133.

By: J. Zhang n, S. Nabavi*, A. Chakrabortty n & Y. Xin*

author keywords: Distributed optimization; wide-area monitoring; mode estimation; alternating direction method of multipliers (ADMM); synchrophasors
TL;DR: This paper presents a suite of asynchronous distributed optimization algorithms for wide-area oscillation estimation in power systems using alternating direction method of multipliers (ADMMs), and proposes four different strategies by which the convergence rate and accuracy of this consensus algorithm can be made immune to the asynchrony resulting from the network traffic. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 conference paper

Aggregate control of clustered networks with inter-cluster time delays

2016 american control conference (acc), 5340–5345.

By: A. Boker*, C. Yuan n, F. Wu n & A. Chakrabortty n

TL;DR: This work designs state-feedback controllers at the cluster level to guarantee stability in the presence of time varying delays in the inter-cluster feedback channels and shows that when these individual controllers are implemented on the actual network model, the closed-loop response is close to that obtained from the approximate models. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2016 journal article

Co-Optimization of Power and Reserves in Dynamic T&D Power Markets With Nondispatchable Renewable Generation and Distributed Energy Resources

PROCEEDINGS OF THE IEEE, 104(4), 807–836.

By: M. Caramanis, E. Ntakou, W. Hogan*, A. Chakrabortty n & J. Schoene

author keywords: Distributed power market clearing; distribution network locational marginal prices (DLMP); proximal message passing (PMP); reactive power pricing; reserve pricing
TL;DR: A distributed, massively parallel architecture that enables tractable transmission and distribution locational marginal price (T&DLMP) discovery along with optimal scheduling of centralized generation, decentralized conventional and flexible loads, and distributed energy resources (DERs). (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 conference paper

Co-designing communication and control systems for wide-area control of power systems

2016 american control conference (acc), 2667–2667.

By: A. Chakrabortty n

TL;DR: This tutorial talk will propose a highly resilient, fault-tolerant, and reliable distributed network control system for tomorrow's power grids using cutting-edge emerging technologies such as cloud computing and software defined networks. (via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2016 conference paper

Comprehensive dynamic modeling of a solid-state transformer based power distribution system

2016 ieee energy conversion congress and exposition (ecce).

By: M. Khan n, A. Milani n, A. Chakrabortty n & I. Husain n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2016 journal article

Distributed Cyber-Physical Algorithms for Wide-Area Monitoring of Power Systems

Journal of the Society of Instrument and Control Engineers (SICE), Japan, (Special issue on Design of Cooperative Distributed Energy Management Systems).

By: A. Chakrabortty

Ed(s): T. Namerikawa & M. Fujita

Source: NC State University Libraries
Added: April 11, 2019

2016 chapter

Distributed algorithms for wide-area monitoring of power systems: a cyber-physical perspective

In S. Suryanarayanan, R. Roche, & T. M. Hansen (Eds.), Cyber-Physical-Social Systems and Constructs in Electric Power Engineering (pp. 39–73).

By: S. Nabavi*, J. Zhang n & A. Chakrabortty n

Ed(s): S. Suryanarayanan, R. Roche & T. Hansen

TL;DR: This chapter develops a distributed algorithmic framework for executing critical transmission-level operations of power systems using Synchrophasor data and describes how one can develop distributed optimization methods for solving real-time wide-area monitoring problems with investigation of their convergence, robustness, and implementation issues. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: April 11, 2019

2016 conference paper

Distributed monitoring of wide-area oscillations in the presence of GPS spoofing attacks

2016 IEEE Power and Energy Society General Meeting (PESGM). Presented at the 2016 IEEE Power and Energy Society General Meeting (PESGM).

By: Y. Wang* & A. Chakrabortty n

Event: 2016 IEEE Power and Energy Society General Meeting (PESGM)

Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2016 conference paper

Ensuring economic fairness in wide-area control for power systems via game theory

2016 american control conference (acc), 3231–3236.

By: F. Lian n, A. Duel-Hallen n & A. Chakrabortty n

TL;DR: A fair cost-allocation method based on the theory of cooperative network-formation games (NFG) is developed to fairly allocate the communication cost to the companies, which act as game-players. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries, ORCID
Added: August 6, 2018

2016 journal article

Fluridone and Encapsulated Acetochlor Reduce Protoporphyrinogen Oxidase Inhibitor Use in a Glufosinate-Based Palmer Amaranth Management Program for Cotton

WEED TECHNOLOGY, 30(4), 838–847.

author keywords: Herbicide resistance management; herbicide-resistant weeds; PRE herbicides; preplant herbicides
TL;DR: It is demonstrated that fluridone and acetochlor can substitute for soil-applied PPO-inhibiting herbicides in management systems for Palmer amaranth. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
15. Life on Land (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 conference paper

Foundations of Infrastructure-CPS

2016 american control conference (acc), 2649–2664.

By: A. Annaswamy*, A. Hussain*, A. Chakrabortty n & M. Cvetkovic*

TL;DR: The time is right to go to the next step, of the analysis and synthesis of cyber-physical systems that are present in an infrastructure, as Infrastructure-CPS, which form the focus of the proposed tutorial. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2016 conference paper

H-2-clustering of closed-loop consensus networks under a class of LQR design

2016 american control conference (acc), 7141–7146.

By: N. Xue n & A. Chakrabortty n

TL;DR: An upper bound on the difference between the closed-loop transfer matrix of the original network with the full-order controller and that with the projected controller is derived in terms of P, and a design for P using K-means is proposed that tightens the bound while guaranteeing numerical feasibility. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2016 conference paper

H-2-clustering of closed-loop consensus networks under generalized LQR designs

2016 ieee 55th conference on decision and control (cdc), 5116–5121.

By: N. Xue n & A. Chakrabortty n

TL;DR: An upper bound is derived on the difference between the closed-loop transfer matrix of the original network with the full-order controller and that with the projected controller in the sense of ℋ2 norm and a design for P is proposed using weighted k-means that tightens the bound. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2016 conference paper

Identifying covert data-manipulators in power system estimation loops

2016 ieee 55th conference on decision and control (cdc), 1273–1278.

By: M. Liao n & A. Chakrabortty n

TL;DR: A set of algorithms for identifying covert data manipulators in distributed optimization loops for estimating oscillation modes in power systems are developed and it is shown that this adjustment can amplify the attack signature, and help in identification, especially when the attack magnitude is small. (via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2016 conference paper

Mitigating denial-of-service attacks in wide-area LQR control

2016 ieee power and energy society general meeting (pesgm).

By: N. Chockalingam n, A. Chakrabortty n & A. Hussain*

TL;DR: This work derives a nominal mathematical model of the power system network considering a delay-aware LQR controller without any DoS, and proposes two mitigation strategies to compensate for the loss of missing states in the feedback path. (via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2016 journal article

Parallel Identification of Power System Dynamic Models Under Scheduling Constraints

IEEE TRANSACTIONS ON POWER SYSTEMS, 31(6), 4584–4594.

By: N. Xue n & A. Chakrabortty n

author keywords: Parallel algorithms; system identification; least-squares; integer programming; synchrophasor
TL;DR: Two sets of parallel algorithms for identifying real-time, small-signal dynamic models of power systems using multiple sources of Synchrophasor data are presented and a novel scheduling algorithm is proposed to enable flexible deadlines that meet these constraints. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 journal article

Time-Scale Modeling of Wind-Integrated Power Systems

IEEE TRANSACTIONS ON POWER SYSTEMS, 31(6), 4712–4721.

By: S. Chandra, D. Gayme* & A. Chakrabortty n

author keywords: Wind power; swing dynamics; time-scale separation; singular perturbation; inter-area oscillations
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 conference paper

Wide-area control of power systems using cloud-in-the-loop feedback

2016 IEEE Global Conference on Signal and Information Processing (GlobalSIP). Presented at the 2016 IEEE Global Conference on Signal and Information Processing (GlobalSIP).

By: M. Weiss n, J. Zhang n & A. Chakrabortty n

Event: 2016 IEEE Global Conference on Signal and Information Processing (GlobalSIP)

TL;DR: The use of cloud-computing platforms and virtual network laboratories such as GENI, together with high-speed software defined networks such as Internet2, are proposed to combat various cyber-physical implementation challenges for wide-area control of large power systems using Synchrophasors. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2015 journal article

A Real-Time Attack Localization Algorithm for Large Power System Networks Using Graph-Theoretic Techniques

IEEE TRANSACTIONS ON SMART GRID, 6(5), 2551–2559.

By: T. Nudell n, S. Nabavi n & A. Chakrabortty n

author keywords: Algebraic graph theory; attack localization; identification; nodal domains; power system
TL;DR: A graph-theoretic algorithm for localizing the physical manifestation of attacks or disturbances in large power system networks using real-time synchrophasor measurements and validated using a detailed case study of the two-area Kundur model and the IEEE 39-bus power system. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 conference paper

A Wide-area SVC controller design using a dynamic equivalent model of WECC

2015 ieee power & energy society general meeting.

By: M. Weiss n, A. Chakrabortty n, F. Ashrafi*, A. Jamehbozorg* & B. Ahu-Jaradeh

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2015 conference paper

A global identifiability condition for consensus networks on tree graphs

2015 american control conference (acc), 1830–1835.

By: S. Nabavi n, A. Chakrabortty n & P. Khargonekar*

TL;DR: A sensor placement algorithm is proposed that guarantees identifiability of the edge weights of linear network dynamic systems exhibiting continuous-time weighted consensus protocols with acyclic structure. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2015 conference paper

A model predictive control design for selective modal damping in power systems

2015 american control conference (acc), 4314–4319.

By: A. Jain n, E. Biyik* & A. Chakrabortty n

TL;DR: A novel real-time predictive control technique to damp dominant inter-area oscillation modes in power systems by predicting the dominant DFT magnitudes in the desired low frequency range using online measured data, and tuning Q accordingly. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2015 conference paper

An intrusion-resilient distributed optimization algorithm for modal estimation in power systems

2015 54th IEEE conference on decision and control (CDC), 39–44.

By: S. Nabavi n & A. Chakrabortty n

TL;DR: An intrusion-resilient distributed algorithmic approach to estimate the electro-mechanical oscillation modes of a large power system using Synchrophasor measurements and shows the resiliency of this algorithm against the cyber-attacks that may happen in the form of data manipulation. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2015 conference paper

Convergence analysis of ADMM-based power system mode estimation under asynchronous wide-area communication delays

2015 ieee power & energy society general meeting.

By: J. Zhang n, S. Nabavi n, A. Chakrabortty n & Y. Xin*

TL;DR: A probability model is imposed for the communication delays between the central PDC and the local PDCs, and two strategies of averaging are implemented based on a chosen delay threshold to show possible instabilities and sensitivities of the ADMM convergence on delay distribution parameters under these two averaging strategies. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2015 journal article

Distributed Optimization Algorithms for Wide-Area Oscillation Monitoring in Power Systems Using Interregional PMU-PDC Architectures

IEEE TRANSACTIONS ON SMART GRID, 6(5), 2529–2538.

By: S. Nabavi n, J. Zhang n & A. Chakrabortty n

author keywords: Alternating direction method of multipliers (ADMM); distributed optimization; phasor measurement units (PMUs); Prony; wide area oscillation monitoring
TL;DR: A set of distributed algorithms for estimating the electro-mechanical oscillation modes of large power system networks using synchrophasors is presented and three different communication and computational architectures by which estimators located at the control centers of various utility companies can run local optimization algorithms using local PMU data, and thereafter communicate with other estimators to reach a global solution. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 conference paper

Ensuring localizability of node attacks in consensus networks via feedback graph design

2015 American Control Conference (ACC). Presented at the 2015 American Control Conference (ACC).

By: T. Nudell & A. Chakrabortty*

Event: 2015 American Control Conference (ACC)

TL;DR: This paper shows that the problem of localizability of attacks in continuous-time consensus networks can be bypassed by designing a state-feedback controller that equivalently changes the algebraic properties of the underlying network graph, and thereby restores minimality of the TF. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2015 conference paper

Equilibria analysis of power systems using a numerical homotopy method

2015 ieee power & energy society general meeting.

By: S. Chandra n, D. Mehta* & A. Chakrabortty n

UN Sustainable Development Goal Categories
14. Life Below Water (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2015 conference paper

Exploring the impact of wind penetration on power system equilibrium using a numerical continuation approach

2015 american control conference (acc), 4339–4344.

By: S. Chandra n, D. Mehta* & A. Chakrabortty n

TL;DR: This paper derives a differentialalgebraic model of a power system network consisting of synchronous generators, loads and a wind power plant modeled by wind turbines and doubly-fed induction generators via nonlinear power flow equations and applies a recently developed parameterhomotopy based numerical continuation algorithm to solve the equations. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2015 journal article

Graph-Theoretic Methods for Measurement-Based Input Localization in Large Networked Dynamic Systems

IEEE TRANSACTIONS ON AUTOMATIC CONTROL, 60(8), 2114–2128.

By: T. Nudell n & A. Chakrabortty n

author keywords: Algebraic graph theory; consensus networks; fault localization; identification; nodal domains
TL;DR: It is proved that for systems defined over a specific class of graphs, referred to as p-area complete graphs, the localization is unique, and the extension of this result for second-order synchronization networks is state. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 conference paper

On aggregate control of clustered consensus networks

2015 american control conference (acc), 5527–5532.

By: A. Boker n, T. Nudell n & A. Chakrabortty n

TL;DR: This paper decomposes the actual network model into an approximate model, and defines the controller at every node as the sum of two independent state-feedback controls, one for the fast dynamics and another for the slow, indicating that only a single aggregate slow controller needs to be designed per area. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2015 conference paper

Protecting privacy of topology in consensus networks

2015 american control conference (acc), 2476–2481.

By: V. Katewa*, A. Chakrabortty n & V. Gupta*

TL;DR: This work presents a mechanism to protect the differential privacy of this topology from an eavesdropper who may have unauthorized access to the estimator. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2014 journal article

A Spatio-Temporal Framework for Spectral Analysis and Control of Interarea Oscillations in Wind-Integrated Power Systems

IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, 22(4), 1658–1665.

By: D. Gayme* & A. Chakrabortty n

author keywords: Continuum models; control design; distributed parameter model; parametric optimization; power system dynamics; power system stability; wind farms
TL;DR: An analytical method to study the effects of wind farm location on the interarea oscillation spectrum of large radial power systems along with a means to shape this spectrum and how this spectrum can be shaped using a simple optimal control design for the wind power output is presented. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 conference paper

A distributed optimization algorithm for attack-resilient wide-area monitoring of power systems: Theoretical and experimental methods

Decision and game theory for security, gamesec 2014, 8840, 350–359.

By: J. Zhang n, P. Jaipuria*, A. Chakrabortty n & A. Hussain*

TL;DR: A real-time distributed optimization algorithm based on Alternating Directions Method of Multipliers (ADMM) for resilient monitoring of power flow oscillation patterns in large power system networks and shows that the distributed algorithm is more resilient to communication failures as compared to alternative centralized methods. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2014 conference paper

A graph-theoretic algorithm for localization of forced harmonic oscillation inputs in power system networks

2014 american control conference (acc), 1334–1340.

By: T. Nudell n & A. Chakrabortty n

TL;DR: A graph-theoretic algorithm based on the magnitude as well as the sign of these residues that detects the location of the forced oscillation input in swing dynamic models of large power system networks in the form of forced oscillations with unknown amplitude and frequency is developed. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2014 conference paper

A real-time distributed prony-based algorithm for modal estimation of power system oscillations

2014 american control conference (acc), 729–734.

By: S. Nabavi n & A. Chakrabortty n

TL;DR: This paper presents a set of distributed algorithms to estimate the oscillatory electro-mechanical eigenvalues of large power system networks using real-time measurements of phase angles and frequencies, and integrates the centralized Prony method for modal extraction with two commonly-used distributed optimization algorithms. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2014 conference paper

A real-time distributed storage system for multi-resolution virtual synchrophasor

2014 IEEE PES General Meeting | Conference & Exposition. Presented at the 2014 IEEE Power & Energy Society General Meeting.

By: T. Qian*, A. Chakrabortty n, F. Mueller* & Y. Xin*

Event: 2014 IEEE Power & Energy Society General Meeting

TL;DR: This work designs and implements a real-time distributed storage system to support the virtual PMU data communication, and extends the Chord algorithm so that the response time of data communication can be bounded by the storage system. (via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure (OpenAlex)
Sources: Crossref, NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2014 journal article

Coordinating Wind Farms and Battery Management Systems for Inter-Area Oscillation Damping: A Frequency-Domain Approach

IEEE TRANSACTIONS ON POWER SYSTEMS, 29(3), 1454–1462.

By: S. Chandra n, D. Gayme* & A. Chakrabortty n

author keywords: Damping; frequency domain analysis; optimization; wind power systems
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 conference paper

Cost allocation strategies for wide-area control of power systems using Nash Bargaining Solution

53rd IEEE Conference on Decision and Control, 1701–1706.

By: F. Lian n, A. Duel-Hallen n & A. Chakrabortty n

Event: 2014 IEEE 53rd Annual Conference on Decision and Control (CDC) at Piscataway, NJ, USA

TL;DR: A novel game-theoretic strategy that guarantees fair cost allocation incurred by communication links in wide-area control for electric power systems and applies the Nash Bargaining Solution to fairly allocate the total cost among the various game-players. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries, ORCID
Added: March 24, 2019

2014 conference paper

Delay-aware co-designs for wide-area control of power grids

53rd IEEE Conference on Decision and Control. Presented at the 2014 IEEE 53rd Annual Conference on Decision and Control (CDC).

By: D. Soudbakhsh*, A. Chakrabortty n & A. Annaswamy*

Event: 2014 IEEE 53rd Annual Conference on Decision and Control (CDC)

TL;DR: This paper poses the control objective as an LQR minimization of the electro-mechanical states of the swing equations, and presents a so-called arbitration approach by which the flexibilities of the communication network can be exploited to co-design a delay-aware state feedback control law. (via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2014 book

Digital Control System Analysis and Design

Prentice Hall.

By: C. Phillips, H. Nagle & A. Chakrabortty

Source: NC State University Libraries
Added: March 9, 2019

2014 article

Distributed Implementation of Wide-Area Monitoring Algorithms for Power Systems Using a US-Wide ExoGENI-WAMS Testbed (Invited Paper)

2014 44TH ANNUAL IEEE/IFIP INTERNATIONAL CONFERENCE ON DEPENDABLE SYSTEMS AND NETWORKS (DSN), pp. 762–767.

By: J. Zhang n, A. Chakrabortty n & Y. Xin*

TL;DR: This paper considers two computational approaches, namely decentralized least squares (DLS) and its recursive implementation (RLS), executed using multiple phasor data concentrators (PDC), deployed as virtual computing machines communicating over a fiber-optic communication network. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 journal article

Distributed Optimization Methods for Wide-Area Damping Control of Power System Oscillations

IFAC Proceedings Volumes, 47(3), 1861–1866.

By: A. Chakrabortty n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2014 conference paper

Distributed estimation of inter-area oscillation modes in large power systems using alternating direction multiplier method

2014 ieee pes general meeting - conference & exposition.

By: S. Nabavi n & A. Chakrabortty n

TL;DR: This paper integrates the centralized Prony method with a commonly used distributed optimization algorithm, namely, alternating direction method of multipliers (ADMM), and shows how the resulting approach can utilize PMU data to identify the modes of interest asymptotically. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2014 conference paper

Impact analysis of wind power injection on time-scale separation of power system oscillations

2014 ieee pes general meeting - conference & exposition.

By: S. Chandra n, M. Weiss n, A. Chakrabortty n & D. Gayme*

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2014 journal article

Optimal Measurement Allocation Algorithms for Parametric Model Identification of Power Systems

IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, 22(5), 1801–1812.

By: A. Chakrabortty n & C. Martin*

author keywords: Cramer-Rao bound (CRB); parameter estimation; phasor measurment unit (PMU) allocation; pseudo-measurements; swing dynamics
TL;DR: An optimization algorithm is presented that selects the optimal sets of points for placing phasor measurement units (PMUs) on the transmission lines of a multimachine power system for the purpose of identifying the best model fit for its wide-area swing dynamics. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 journal article

PMU placement for dynamic equivalencing of power systems under flow observability constraints

ELECTRIC POWER SYSTEMS RESEARCH, 106, 51–61.

By: J. Anderson n & A. Chakrabortty n

author keywords: PMU placement; Dynamic equivalencing; Observability; Identification; Algorithms
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 conference paper

Spatio-temporal oscillation monitoring in spatially distributed power system networks using energy functions

2014 american control conference (acc), 753–758.

By: A. Chakrabortty n & T. Khan*

TL;DR: This paper considers continuum models of power system networks divided into clusters, and presents a model reduction method to derive analytical expressions for frequency waves propagating from one cluster to another depending on the network topology, and defines an equivalent Sturm-Liouville eigenvalue equation for the clustered network. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2013 conference paper

A graph-theoretic algorithm for disturbance localization in large power grids using residue estimation

2013 American Control Conference. Presented at the 2013 American Control Conference (ACC).

By: T. Nudell n & A. Chakrabortty n

Event: 2013 American Control Conference (ACC)

TL;DR: This paper proves that for systems defined over p-area complete graphs the input localization is unique, and proposes an input localization method based on the properties of the weak nodal domains corresponding to the first p dominant slow eigenvalues. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2013 conference paper

A multi-user network testbed for wide-area monitoring and control of power systems using distributed synchrophasors

Proceedings of the the fourth international conference on Future energy systems - e-Energy '13. Presented at the the the fourth international conference.

By: M. Weiss n, A. Chakrabortty n & Y. Xin*

Event: the the fourth international conference

TL;DR: An advanced hardware-in-loop simulation facility for real-time demonstration and validation of power system monitoring and control algorithms, currently under construction at NC State University, is described. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2013 conference paper

A study on group communication in distributed wide-area measurement system networks in large power systems

2013 IEEE Global Conference on Signal and Information Processing. Presented at the 2013 IEEE Global Conference on Signal and Information Processing (GlobalSIP).

By: Y. Xin* & A. Chakrabortty n

Event: 2013 IEEE Global Conference on Signal and Information Processing (GlobalSIP)

TL;DR: This paper presents a preliminary study on two problems, namely communication group formation and routing, that are fundamental to the envisioned new communication architecture. (via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2013 article

Hardware-in-the-Loop Simulations and Verifications of Smart Power Systems Over an Exo-GENI Testbed

2013 SECOND GENI RESEARCH AND EDUCATIONAL EXPERIMENT WORKSHOP (GREE), pp. 16–19.

By: A. Chakrabortty n & Y. Xin*

TL;DR: An advanced hardware-in- loop simulation facility for real-time demonstration and validation of power system monitoring and control algorithms, currently under construction at NC State University, is described. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2013 conference paper

Introduction to wide-area control of power systems

2013 american control conference (acc), 6758–6770.

By: A. Chakrabortty n & P. Khargonekar*

TL;DR: The main research challenges that need to be overcome to realize the benefits of wide area control in power systems are presented and two new control paradigms are proposed, namely a scheduling approach for appropriate controller selection based on online estimation of oscillation modes, and distributed phasor-based control using model estimation. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2013 chapter

Measurement-Based Methods for Model Reduction of Power Systems Using Synchrophasors

In Power Electronics and Power Systems (pp. 159–197).

By: A. Chakrabortty n & J. Chow*

TL;DR: This chapter presents an overview of several new results on how to construct such simplified interarea models of large power systems by using dynamic measurements available from phasor measurement units (PMUs) installed at limited points on the transmission lines. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 9, 2019

2013 conference paper

Multi-dimensional wide-area visualization of power system dynamics using Synchrophasors

2013 IEEE Power & Energy Society General Meeting. Presented at the 2013 IEEE Power & Energy Society General Meeting.

By: S. Thakur* & A. Chakrabortty n

Event: 2013 IEEE Power & Energy Society General Meeting

TL;DR: This work presents several geospatial and multi-dimensional visualization methods that correlate various dynamic attributes of phase angle and power oscillations, and explicitly quantify their spatio-temporal couplings, on both absolute and relative scales. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2013 conference paper

Topology identification for dynamic equivalent models of large power system networks

2013 american control conference (acc), 1138–1143.

By: S. Nabavi n & A. Chakrabortty n

TL;DR: Two algorithms to identify the equivalent topology of reduced-order models of power systems using measurements of phase angles and frequencies available from Phasor Measurement Units (PMUs) are proposed. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2013 conference paper

Using battery management systems to augment inter-area oscillation control in wind-integrated power systems

2013 american control conference (acc), 5809–5814.

By: S. Chandra n, D. Gayme* & A. Chakrabortty n

TL;DR: This paper designs co-dependent linear controllers for the wind power and the BES in charging mode, and shows that the addition of this controlled BES greatly improves the spectral matching within the inter-area oscillation range. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2012 conference paper

A decentralized ID algorithm for detecting slow-fast oscillations in power systems from overwhelming volumes of phasor data

2012 ieee 51st annual conference on decision and control (cdc), 5010–5015.

By: A. Chakrabortty n, G. Michailidis* & Y. Xin*

TL;DR: Modal decomposition of swing dynamics for detecting slow and fast oscillation modes in the system with evaluation of their respective damping factors is proposed. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2012 conference paper

A minimum cover algorithm for PMU placement in power system networks under line observability constraints

2012 IEEE Power and Energy Society General Meeting.

By: J. Anderson n & A. Chakrabortty n

Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2012 book

Control and Optimization Methods for Electric Smart Grids

In CONTROL AND OPTIMIZATION METHODS FOR ELECTRIC SMART GRIDS (pp. 1–371).

By: N. Libraries

TL;DR: A model Reference Approach for Interarea Modal Damping in Large Power Systems and an adaptive wide-area power system damping controller using synchrophasor data are presented. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2012 conference paper

Evaluating the computation times of real-time algorithms for power system modeling and state prediction

2012 IEEE Third International Conference on Smart Grid Communications (SmartGridComm), 37–42.

By: J. Felder n & A. Chakrabortty n

TL;DR: A comparative study of three real- time algorithms for power system model identification, parameter estimation and state prediction using real-time Phasor Measurement (PMU) data available from various selected nodes in a power system. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2012 conference paper

Graph-theoretic algorithms for PMU placement in power systems under measurement observability constraints

2012 IEEE Third International Conference on Smart Grid Communications (SmartGridComm), 617–622.

By: J. Anderson n & A. Chakrabortty n

TL;DR: Two graph-theoretic PMU placement algorithms for multi-area power system networks with the objective of identifying a dynamic equivalent model for the system are developed. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2012 conference paper

Graph-theoretic model reduction of oscillation propagation in spatially distributed power system networks

2012 IEEE 51st IEEE Conference on Decision and Control (CDC). Presented at the 2012 IEEE 51st Annual Conference on Decision and Control (CDC).

By: A. Chakrabortty n & T. Khan*

Event: 2012 IEEE 51st Annual Conference on Decision and Control (CDC)

TL;DR: This paper derives a model reduction method to illustrate how oscillations can propagate from one cluster to another in the form of equivalent frequency waves depending on the topology of their interconnections, and defines an equivalent Sturm-Liouville eigenvalue equation for the entire network. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2012 conference paper

Impact of wind farm placement on inter-area oscillations in large power systems

2012 American Control Conference (ACC). Presented at the 2012 American Control Conference - ACC 2012.

By: D. Gayme* & A. Chakrabortty n

Event: 2012 American Control Conference - ACC 2012

TL;DR: This paper presents an analytical method for evaluating how the placement of wind farms in a large, geographically dispersed power system may affect its inter-area oscillation dynamics, based on a two-area power system model inspired by US west coast transfer paths such as the Pacific AC Inter-tie. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2012 conference paper

Shaping power system inter-area oscillations through control loops of grid integrated wind farms

2012 IEEE 51st IEEE Conference on Decision and Control (CDC). Presented at the 2012 IEEE 51st Annual Conference on Decision and Control (CDC).

By: D. Gayme* & A. Chakrabortty n

Event: 2012 IEEE 51st Annual Conference on Decision and Control (CDC)

TL;DR: It is shown that one can design aWind farm controller to shape the frequency response of the power system with a wind farm at an arbitrary location to closely resemble that of a system with an more favorable wind injection site. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2012 journal article

Wide-Area Damping Control of Power Systems Using Dynamic Clustering and TCSC-Based Redesigns

IEEE Transactions on Smart Grid, 3(3), 1503–1514.

By: A. Chakrabortty*

author keywords: Damping control; model reduction; model reference control; power systems; swing equation
TL;DR: It is shown that the inversion problem can be posed equivalently as decomposing the swing dynamics into fast and slow states, and designing the controllers such that the slow dynamics can optimally track a desired closed-loop signal designed for the aggregate model. (via Semantic Scholar)
UN Sustainable Development Goal Categories
14. Life Below Water (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 9, 2019

2012 conference paper

Wide-Area Damping Control of Power Systems Using Inversion Techniques: A TCSC-Based Model Reference Approach

Proceedings of IEEE PES General Meeting. Presented at the San Diego, CA.

By: A. Chakrabortty

Event: at San Diego, CA

Source: NC State University Libraries
Added: April 13, 2019

2012 conference paper

Wide-area damping control of power systems using clustering and FACTS-based redesigns

2012 American Control Conference (ACC). Presented at the 2012 American Control Conference - ACC 2012.

By: A. Chakrabortty n

Event: 2012 American Control Conference - ACC 2012

TL;DR: It is shown that the inversion problem can be posed equivalently as decomposing the swing dynamics into fast and slow states, and designing the controllers such that the slow dynamics can optimally track a desired closed-loop signal designed for the aggregate model. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2011 journal article

A Measurement-Based Framework for Dynamic Equivalencing of Large Power Systems Using Wide-Area Phasor Measurements

IEEE Transactions on Smart Grid, 2(1), 68–81.

By: A. Chakrabortty*, J. Chow & A. Salazar

author keywords: Interarea oscillations; phasor measurement; power system model reduction
TL;DR: This paper presents a concise overview of several new results on how to construct simplified interarea models of large power networks by using dynamic measurements available from phasor measurement units (PMUs) installed at specific points on the transmission line. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Crossref, NC State University Libraries
Added: March 9, 2019

2011 journal article

Building a dynamic electro-mechanical model for the Pacific AC intertie using distributed synchrophasor measurements

EUROPEAN TRANSACTIONS ON ELECTRICAL POWER, 21(4), 1657–1672.

By: A. Chakrabortty n & A. Salazar*

author keywords: identification; model reduction; PMU; small-signal perturbation
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2011 conference paper

Modeling and Analysis of Oscillation Propagation in Complex Power System Networks

Proceedings of the IEEE Power & Energy Society General Meeting. Presented at the IEEE Power & Energy Society General Meeting, Detroit, MI.

By: A. Chakrabortty & T. Khan

Event: IEEE Power & Energy Society General Meeting at Detroit, MI

Sources: Crossref, NC State University Libraries
Added: April 13, 2019

2011 journal article

Optimal measurement allocation for parametric model identification of electrical networks

Nonlinear Theory and Its Applications, IEICE, 2(3), 302–319.

By: A. Chakrabortty n & C. Martin*

author keywords: networks; Cramer-Rao bounds; swing equation; parameter estimation
TL;DR: This paper develops optimal sensor siting methods along the edges of a large network of electrical oscillators to identify a parametric model for the network using dynamic measurements of electrical signals corrupted with Gaussian noise. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 9, 2019

2011 conference paper

Optimal sensor placement for parametric identification of electrical networks using mixed phasor measurements

2011 american control conference, 4540–4545.

By: A. Chakrabortty n

Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2011 journal article

Time-Scale Separation Designs for Performance Recovery of Power Systems With Unknown Parameters and Faults

IEEE Transactions on Control Systems Technology, 19(2), 382–390.

By: A. Chakrabortty* & E. Scholtz

author keywords: Performance recovery; power systems; robust control; singular perturbation
TL;DR: The effectiveness of several time-scale separation designs for robust stabilization and performance recovery to multimachine power systems with two commonly encountered classes of uncertainties, namely matched additive uncertainty and input multiplicative uncertainty are illustrated. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 9, 2019

2011 chapter

Transient Stability Assessment Using Synchronized Phasor Measurements

In Electric Power Engineering Handbook. CRC Press.

By: A. Chakrabortty

Source: NC State University Libraries
Added: March 9, 2019

2011 conference paper

Virtual smart grid architecture and control framework

2011 IEEE International Conference on Smart Grid Communications (SmartGridComm). Presented at the 2011 IEEE Second International Conference on Smart Grid Communications (SmartGridComm).

By: Y. Xin*, I. Baldine, J. Chase*, T. Beyene*, B. Parkhurst* & A. Chakrabortty*

Event: 2011 IEEE Second International Conference on Smart Grid Communications (SmartGridComm)

TL;DR: This novel architecture extends the pervasive virtualization principle to the wide area smart grid sensory, communication, and control systems, and essentially embeds the Smart Grid (SG) into a cloud environment. (via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2011 conference paper

Wide-area damping control of large power systems using a model reference approach

IEEE Conference on Decision and Control and European Control Conference. Presented at the 2011 50th IEEE Conference on Decision and Control and European Control Conference (CDC-ECC 2011).

By: A. Chakrabortty n

Event: 2011 50th IEEE Conference on Decision and Control and European Control Conference (CDC-ECC 2011)

TL;DR: It is shown that model reference control (MRC) can be an excellent choice to solve this damping problem when the power system consists of two dominant areas, or equivalently one dominant interarea mode. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2010 conference paper

Building a dynamic electromechanical model for the pacific AC intertie using PMU measurements

IEEE PES General Meeting. Presented at the Energy Society General Meeting.

By: A. Chakrabortty* & A. Salazar*

Event: Energy Society General Meeting

Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2010 conference paper

Macroscopic modeling of large power systems using distributed dynamic measurements with dependence on network topology

49th IEEE Conference on Decision and Control (CDC). Presented at the 2010 49th IEEE Conference on Decision and Control (CDC).

By: A. Chakrabortty n & J. Chow*

Event: 2010 49th IEEE Conference on Decision and Control (CDC)

author keywords: Power networks; model reduction; parameter estimation
TL;DR: This paper presents several new results on how to construct simplified macroscopic models of large power networks by using dynamic measurements available from specific points on the network edges, namely, a two-node radial network and a star-connected three-node system. (via Semantic Scholar)
UN Sustainable Development Goal Categories
14. Life Below Water (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2010 conference paper

Optimal placement of PMUs for identification of power system models using noisy measurement data

IEEE PES General Meeting. Presented at the Energy Society General Meeting.

By: A. Chakrabortty* & M. Szczodrak*

Event: Energy Society General Meeting

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2010 conference paper

Optimal sensor placement for parametric model identification of electrical networks, Part II: Estimation under output feedback

49th IEEE Conference on Decision and Control (CDC). Presented at the 2010 49th IEEE Conference on Decision and Control (CDC).

By: A. Chakrabortty n & C. Martin*

Event: 2010 49th IEEE Conference on Decision and Control (CDC)

author keywords: Power networks; Cramer-Rao bound; swing equation; parameter estimation
TL;DR: An algorithm for choosing optimal measurement points on the edges of a network of dynamic electrical oscillators such that the noise-corrupted electrical signals measured by sensors at that point can be used for generating the most accurate estimates for the network model. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2010 conference paper

Optimal sensor placement for parametric model identification of electrical networks, part I: Open loop estimation

49th IEEE Conference on Decision and Control (CDC). Presented at the 2010 49th IEEE Conference on Decision and Control (CDC).

By: A. Chakrabortty n & C. Martin*

Event: 2010 49th IEEE Conference on Decision and Control (CDC)

author keywords: Power networks; Cramer-Rao bound; swing equation; parameter estimation
TL;DR: An algorithm for placing sensors optimally along the edges of a large network of electrical oscillators to identify a parametric model for the network using dynamic measurements of electrical signals such as magnitudes and phase angles of voltages and currents, corrupted with Gaussian noise is presented. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2009 journal article

Interarea Model Estimation for Radial Power System Transfer Paths With Intermediate Voltage Control Using Synchronized Phasor Measurements

IEEE Transactions on Power Systems, 24(3), 1318–1326.

By: A. Chakrabortty*, J. Chow* & A. Salazar*

author keywords: Generator voltage support; phasor measurement unit (PMU); power transfer path; static VAr compensator (SVC)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 9, 2019

2009 conference paper

Performance oriented high gain redesigns for FACTS-controlled SMIB power systems

Proceedings of the 48h IEEE Conference on Decision and Control (CDC) held jointly with 2009 28th Chinese Control Conference. Presented at the 2009 Joint 48th IEEE Conference on Decision and Control (CDC) and 28th Chinese Control Conference (CCC).

By: A. Chakrabortty* & M. Mesbahi*

Event: 2009 Joint 48th IEEE Conference on Decision and Control (CDC) and 28th Chinese Control Conference (CCC)

TL;DR: The singular perturbation based nonlinear control redesign of [1] is applied to guarantee a desired transient performance of Single Machine Infinite Bus electric power systems with dynamic Flexible AC Transmission System (FACTS) control. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2009 journal article

Robust Stabilization and Performance Recovery of Nonlinear Systems With Unmodeled Dynamics

IEEE Transactions on Automatic Control, 54(6), 1351–1356.

By: A. Chakrabortty* & M. Arcak*

author keywords: Nonlinear systems; unmodeled dynamics
TL;DR: A time-scale separation redesign for stabilization and performance recovery of nonlinear systems with unmodeled dynamics and designs two sets of high gain filters to force this estimate to converge to the nominal input on an intermediate time- scale. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 9, 2019

2009 conference paper

Some new results on the identification of two-area power system models with SVC control

2009 American Control Conference. Presented at the 2009 American Control Conference.

By: A. Chakrabortty*

Event: 2009 American Control Conference

TL;DR: This paper first derive expressions for the aggregated equivalent reactance and machine inertias in each area, and then shows how these parameters can be computed from the voltage and frequency measurements at three buses in the transfer path including the SVC bus. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2009 conference paper

Synchronized Phasor Data Estimation of Dynamic Parameters for Radial Power System Transfer Path with Voltage Reinforcement

11th Symposium of Specialists in Electric Operational and Expansion Planning (SEPOPE). Belem, Brazil.

By: A. Chakrabortty & J. Chow

Source: NC State University Libraries
Added: March 24, 2019

2009 journal article

Time-scale separation redesigns for stabilization and performance recovery of uncertain nonlinear systems

Automatica, 45(1), 34–44.

By: A. Chakrabortty* & M. Arcak*

author keywords: Robust nonlinear control; Singular perturbation; Performance recovery
TL;DR: Using singular perturbation theory it is proved that the trajectories of the respective two-time-scale and three-time scale redesigned systems approach those of the nominal system when the filter gains are increased. (via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 9, 2019

2008 journal article

Estimation of Radial Power System Transfer Path Dynamic Parameters Using Synchronized Phasor Data

IEEE Transactions on Power Systems, 23(2), 564–571.

By: J. Chow*, A. Chakrabortty*, L. Vanfretti* & M. Arcak*

Sources: Crossref, NC State University Libraries
Added: March 9, 2019

2008 conference paper

Interarea model estimation for radial power system transfer paths with voltage support using synchronized phasor measurements

2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century. Presented at the Energy Society General Meeting.

By: A. Chakrabortty* & J. Chow*

Event: Energy Society General Meeting

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2008 conference paper

Robust design of a spacecraft attitude tracking control system with actuator uncertainties

2008 47th IEEE Conference on Decision and Control. Presented at the 2008 47th IEEE Conference on Decision and Control.

By: A. Chakrabortty*, M. Arcak* & P. Tsiotras*

Event: 2008 47th IEEE Conference on Decision and Control

TL;DR: The robust redesign for transient performance recovery of nonlinear systems with input uncertainties developed in [2] is applied to a spacecraft attitude tracking problem with actuator uncertainties and it is shown that when the spin and transverse axis directions and/or the gains of the flywheel actuators are uncertain, the kinematic model of a spacecraft can be expressed in this structure. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2008 conference paper

Robust stabilization and performance recovery of nonlinear systems with input unmodeled dynamics

2008 47th IEEE Conference on Decision and Control. Presented at the 2008 47th IEEE Conference on Decision and Control.

By: A. Chakrabortty* & M. Arcak*

Event: 2008 47th IEEE Conference on Decision and Control

TL;DR: The time-scale separation redesign for stabilization and performance recovery of uncertain nonlinear systems proposed in and to systems with input unmodeled dynamics is extended. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2007 conference paper

A Three-time-scale redesign for robust stabilization and performance recovery of nonlinear systems with input uncertainties

2007 46th IEEE Conference on Decision and Control. Presented at the 2007 46th IEEE Conference on Decision and Control.

By: A. Chakrabortty* & M. Arcak*

Event: 2007 46th IEEE Conference on Decision and Control

TL;DR: Using singular perturbation theory it is proved that the trajectories of the resulting three-time scale redesigned system approach those of the nominal system when the filter gains are increased. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2007 conference paper

A Two-Time-Scale Redesign for Robust Stabilization and Performance Recovery of Uncertain Nonlinear Systems

2007 American Control Conference. Presented at the 2007 American Control Conference.

By: A. Chakrabortty* & M. Arcak*

Event: 2007 American Control Conference

TL;DR: A robust redesign technique which recovers the trajectories of a nominal control design in the presence of additive input uncertainties is proposed and it is proved that the trajectory of the redesigned system approach those of the nominal system when the filter gain is increased. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2007 conference paper

Performance recovery of power systems with unknown parameters and faults

2007 46th IEEE Conference on Decision and Control. Presented at the 2007 46th IEEE Conference on Decision and Control.

By: A. Chakrabortty*, E. Scholtz* & M. Arcak*

Event: 2007 46th IEEE Conference on Decision and Control

TL;DR: The effectiveness of the time-scale separation design developed by Chakrabortty and Arcak (2007) in eliminating the possibilities of a Hopf bifurcation and subsequent voltage collapse in a single machine infinite bus (SMIB) power system is illustrated. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2007 journal article

Synchronized Phasor Data Based Energy Function Analysis of Dominant Power Transfer Paths in Large Power Systems

IEEE Transactions on Power Systems, 22(2), 727–734.

By: J. Chow*, A. Chakrabortty*, M. Arcak*, B. Bhargava* & A. Salazar*

author keywords: energy function; power system stability; power transfer path; synchronized phasor measurement unit (PMU)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 9, 2019

2006 conference paper

Synchronized phasor data based energy function analysis of power transfer paths

2006 IEEE Power Engineering Society General Meeting. Presented at the 2006 IEEE Power Engineering Society General Meeting.

By: J. Chow*, A. Chakrabortty*, M. Arcak*, B. Bhargava* & A. Salazar*

Event: 2006 IEEE Power Engineering Society General Meeting

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

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