Speaker: Hsiao-Dong Chiang, Cornell University
Date and venue: Friday 3 November 2023, 14:00-15:00, Seminar Room JDB (please not the unusual time/day)
Title: Theory of Stability Regions and its Practical Application in Online Stability Assessment of Large-Scale Power Grids
Abstract: Recent advances in the theory for stability region estimation for several classes of nonlinear dynamical systems, including two-time-scale DAE systems will be presented. An effective methodology, termed BCU, for on-line transient stability assessment (TSA) and enhancement of a large set of contingencies at operating points obtained from state estimators will be presented. A critical evaluation of this methodology using a practical utility model as a fast screening and ranking method has been performed. This evaluation study is the largest in terms of system size—14,500 buses and 3000 generators—for a practical on-line transient stability assessment application. The evaluation results, performed on 5.3 million contingencies, were very promising in terms of speed, accuracy, reliability, and robustness. This study also confirms the practicality of a theory-based methodology for on-line TSA of large-scale power systems. More than a dozen on-line TSA systems have been installed in large utility companies. Extensions of the BCU methodology to modern power grids with IBRs will be discussed.
Bio: Hsiao-Dong Chiang (IEEE Fellow, 1997) received the Ph.D. degree in electrical engineering and computer sciences from the University of California at Berkeley. Since 1998, he has been a professor in the School of Electrical and Computer Engineering at Cornell University, Ithaca, NY, USA. His current research interests include nonlinear systems, power networks, nonlinear computation and optimization, and their practical applications. He holds 29 U.S. and overseas patents and several consultant positions. He and his research team have published more than 480 papers in refereed journals and conference proceedings and is the author of two books: Direct Methods for Stability Analysis of Electric Power Systems (Hoboken, NJ, USA: Wiley, 2011) and (with Luis F. Alberto) Stability Regions of Nonlinear Dynamical Systems (Cambridge, UK: Cambridge Univ. Press, 2015). Dr. Chiang is the founder of Bigwood Systems, Inc.(BSI) in 1995, Ithaca, NY, USA. In the United States, on-line and off-line products developed by Dr. Chiang and his team members at BSI have served utility customers in 45 states that cover over 70% of the US population. He has served as an associate editor for three IEEE Transactions journals, and has served as a board member for IEEJ Japan. In 2022, he and his team members received a best paper award from the IEEE Trans. on Power Systems and a best conference paper award from the IEEE Power and Energy Society.
We strongly encourage you to attend the seminar in person.
You can also connect via Zoom: https://newnham.zoom.us/j/92544958528?pwd=YS9PcGRnbXBOcStBdStNb3E0SHN1UT09
Meeting ID: 925 4495 8528
Passcode: 203369
