@inproceedings{shi_shen_baran_2016, title={A decentralized volt/var optimization scheme for smart distribution systems}, DOI={10.1109/isgt.2016.7781176}, abstractNote={This paper considers the use of inverter interfaced distributed generators (DGs) for Volt/Var control in a distribution system with high penetration of DGs. A new decentralized Volt/Var Optimization (VVO) scheme is proposed to facilitate Volt/Var control for such a case. The proposed method is based on the Dantzig-Wolf decomposition and the paper shows that this approach facilitates dividing the distribution system into subareas where a local controller can be assigned. The effectiveness of DW-based decentralized VVO scheme is tested using the IEEE 34 node test feeder with high penetration of DGs.}, booktitle={2016 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT)}, author={Shi, Yue and Shen, Z. and Baran, M. E.}, year={2016} }
 @inproceedings{shen_wang_baran_2012, title={Optimal volt/var control strategy for distribution system with multiple voltage regulating devices}, DOI={10.1109/tdc.2012.6281479}, abstractNote={This paper studies the volt/var control strategy for smart distribution system by formulating and solving system optimization problems. In the study, solid state transformers (SST) are used for continuous var compensation, while voltage regulators (VR) are for voltage regulation. The objectives are to minimize total system power loss while maintaining voltages along the feeder within acceptable limits. A two step optimization volt/var control method for multiple, discrete/continuous mixed regulating device is introduced in this paper. Simulation results demonstrate that the proposed technique is able to achieve the objective efficiently.}, booktitle={2012 ieee pes transmission and distribution conference and exposition (t&d)}, author={Shen, Z. and Wang, Z. and Baran, Mesut}, year={2012} }
 @inproceedings{shen_liu_baran_2012, title={Power management strategies for the green hub}, DOI={10.1109/pesgm.2012.6345698}, abstractNote={In this study power management strategies for a novel distribution level microgrid which is being developed at FREEDM center - Green Hub- are investigated. The Green Hub is a 12 kV distribution circuit with high level PV penetration. A large scale dispatchable distributed energy storage device (DERD) has also been added to this system to provide the additional power that is needed during islanding conditions. The high level penetration of photovoltaic (PV) units potentially necessitates new controls for both islanded and grid-connected X operation modes and smooth transition between the two modes to enable the best utilization of the microgrid resources. In this paper, state-of-the-art power management strategies have been investigated for this purpose. The Green Hub has been simulated using simpower/simulink of MATLAB, and it is used to assess the performance of the centralized control scheme considered.}, booktitle={2012 IEEE Power and Energy Society General Meeting}, author={Shen, Z. and Liu, Z. N. and Baran, Mesut}, year={2012} }
 @inproceedings{baran_hooshyar_shen_gajda_huq_2011, title={Impact of high penetration residential PV systems on distribution systems}, DOI={10.1109/pes.2011.6039799}, abstractNote={This paper investigates the operation and protection issues on a distribution system with high penetration of residential PV systems. PV systems are smaller scale resources and therefore they have different impact on a distribution circuit than larger scale resources. The paper indeed considers a typical residential feeder and investigates PV system impacts on the system at different penetration levels. Simulations on this system show that the even the high penetration level PV systems can be accommodated as the impact on the system will not be severe.}, booktitle={2011 ieee power and energy society general meeting}, author={Baran, Mesut and Hooshyar, H. and Shen, Z. and Gajda, J. and Huq, K. M. M.}, year={2011} }