Improved Power Grid Resiliency through Interactive Wide-Area Control

Wednesday, February 11, 2015
12:00 PM to 1:00 PM
ART 1.102
Free and open to the public

Recent research has demonstrated that wide-area signals obtained using synchronized phasor measurements could be more effective than local signals in damping inter-area oscillations in large interconnected power systems. To transmit wide-area signals for use in controls, communication systems are required. Communication systems are vulnerable to disruptions as a result of which the reliability of the power system could be jeopardized. In order to counteract communication failures, resiliency could be built in either the communication system or the physical system.  In this talk an approach is developed to build resiliency in either 1) grid controls in the physical system or 2) utilize a hierarchical set of wide-area measurements for control and employs channel switching based on mathematical morphology identification to counteract the impact of communication failures on control effectiveness. In the first approach, the resiliency is achieved by robustly designing a novel redundant two-input single-output (TISO) supplementary damping controller (SDC) associated with a static VAr compensator (SVC) that utilizes both a wide-area signal and a local signal to guarantee that the system is stabilized if the wide-area signal is lost.  In the second approach, a control framework incorporating a set of synchronized wide-area measurements is designed to consist of multiple single-input single-output supplementary damping controllers associated with a static VAr compensator.  This work is particularly important with regard to leveraging the large investment in installing phasor measurement units across the nation.  Numerical tests on the IEEE 50-generator test system have demonstrated that the proposed approaches are effective in stabilizing the system and improving grid control resiliency in response to communication failures.

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Vijay Vittal

Vijay Vittal

Arizona State University

Vijay Vittal was born in Bangalore, India.  He received the B.E. degree in electrical engineering from the B.M.S. College of Engineering, Bangalore, India, in 1977; the M.Tech. degree in electrical engineering from the Indian Institute of Technology, Kanpur, India, in 1979; and the Ph.D. degree in electrical engineering from Iowa State University, Ames, in 1982.

Currently he is the Ira A. Fulton Chair Professor in the School of Electrical, Computer and Energy Engineering at Arizona State University.  From 1982 – 2004 he served as a faculty member at Iowa State University.

His research interests are in the area of power system dynamics, dynamic security assessment of power systems, power system operation and control, and application of robust control techniques to power systems.  In 1992 he co-authored the textbook entitled Power System Transient Stability Assessment Using the Transient Energy Function Method with A. A. Fouad, in 1999 he co-authored the textbook entitled Power System Analysis with A. R. Bergen, in 2012 he co-authored the textbook entitled Grid Integration and Dynamic Impact of Wind Energy with Raja Ayyanar, and in 2014 he co-authored the textbook entitled Application of Time-Synchronized Measurements in Power System Transmission Networks with Mladen Kezunovic, Sakis Meliopoulos and Vaithianathan Venkatasubramanian.

During 1993-1994 he was the Program Director of the Power Systems Program at the U. S. National Science Foundation.  He is a recipient of the 1985 U.S. Presidential Young Investigator Award.  In 1997, he was elected as a Fellow of IEEE.  He was also the recipient of the 2000 IEEE Power Engineering Society Outstanding Power Engineering Educator Award.  From 1998-2000 he was the Chairman of the IEEE Power Engineering Society System Dynamic Performance Committee.  He was elected to the U.S. National Academy of Engineering in 2004.  From 2005-2011 he served as the Editor in Chief of the IEEE Transactions on Power Systems.  In 2013 he was awarded the IEEE Herman Halperin T&D Field Award.

Since 2005 Dr. Vittal has also served as the Director of the Power System Engineering Research Center, a Phase III National Science Foundation, Industry/University Collaborative Research Center consisting of 13 member universities and 40 industry members.