Voltage Robust Stability in Microgrid Power Management

Speaker: Michael P. Polis

Affiliation: Oakland University, USA

Time: Thursday 31/10/2013 from 11:00 to 12:00

Venue: Conference Room Y343, Kingswood Campus

Abstract: In addition to a detailed presentation of results that have been presented at ECC'13, July 2013, and will be presented at the 2013 IEEE CDC, December 2013, an overview of ongoing research involving the above research group will be discussed. The detailed results concern voltage stability that is of essential importance for power grids. The emergence of distributed energy generators, controllable loads, and local-area energy storage capabilities will introduce new scenarios for distribution networks in which classical frameworks for voltage stability may be inadequate. This seminar introduces a control-theoretic framework for studying voltage stability and its robustness, as well as optimal power management in distribution systems composed of networked microgrids. The framework involves descriptions of the loads and generators by nonlinear state space models and the network connections by a set of topology-based algebraic equations. The combined system leads to a general nonlinear state space model for the microgrid systems. Four stability margins are introduced to capture different scenarios in microgrid power management capabilities and load disturbances. LMI methods are employed for computing stability margins. Illustrative examples are used to demonstrate the methods.

Biography: Dr. Polis received the B.S.E.E. Degree from the University of Florida, and the M.S.E.E. and Ph.D. degrees from Purdue, in 1966, 1968, and 1972, respectively. From 1972-1983 he was a faculty member in Electrical Engineering, at Ecole Polytechnique de Montreal. From 1983-1987 he directed the Systems Theory and Operations Research Program at NSF. In 1987 he joined Wayne State University as Chair of Electrical and Computer Engineering. From 1993-2001 he was Dean of the School of Engineering and Computer Science, Oakland University, Rochester, MI, where he is currently Chair of the Department of Industrial and Systems Engineering. He has been a consultant for several companies, and an expert witness for numerous law firms. His research interests are in energy systems optimization, transportation systems and the identification, and control of distributed parameter systems. He has been active in the IEEE Control Systems Society, and was just elected to Chair the IEEE TAB Periodicals Committee. Dr. Polis is co-author of the paper that was named the "Best Paper IEEE Transactions on Automatic Control 1974-1975".