Communication-Cognizant Distribution System Management

Wednesday, March 22, 2017
11:00 AM to 12:00 PM
POB 2.302
Free and open to the public

The operational paradigm of power distribution systems has witnessed significant transformations with increasing penetration of distributed energy resources (DERs). Voltage regulation, an important distribution operational task, has been greatly challenged by the intermittency and variability of DERs. Meanwhile, these DERs can be leveraged to regulate the grid voltage by quickly changing the reactive power outputs of their power-electronics interface. This talk will present a hybrid voltage control (HVC) strategy that can seamlessly integrate both the local and distributed control strategies. By designing a special voltage mismatch objective, we achieve the proposed HVC architecture using the partial primal-dual (PPD) algorithm that can allow for decentralized online implementations. The resultant HVC design improves over existing distributed methods by integrating with local voltage feedback. It can dynamically adapt to varying system operating conditions while being fully cognizant to the instantaneous availability of communication links. Under the worst-case scenarios of a total link failure, the proposed design naturally boils down to a surrogate local control implementations. Numerical tests on realistic feeder cases are presented to corroborate our analytical results and demonstrate the algorithmic performance.

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Hao Zhu

Hao Zhu

Assistant Professor
University of Illinois, Urbana-Champaign

Hao Zhu is an Assistant Professor of Electrical and Computer Engineering at UIUC. She received a BE degree from Tsinghua University in 2006, and MSc and PhD degrees from the University of Minnesota in 2009 and 2012, all in Electrical Engineering. She worked as a postdoc research associate on power grid modeling and validation at the UIUC Information Trust Institute before joining the ECE faculty in 2014. Her current research interests include power grid monitoring, distribution system operations and control, and energy data analytics. She received the NSF CAREER Award in 2017, the Siebel Energy Institute Seed Grant and the US AFRL Summer Faculty Fellowship in 2016. She is currently a member of the steering committee of the IEEE Smart Grid representing the IEEE Signal Processing Society.