Jianhua Zhang

Works (6)

Updated: July 5th, 2023 15:40

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

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

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

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 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

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