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Dr. Lei Wu

Clarkson University

Dr. Lei Wu is an Assistant Professor in the ECE Department at Clarkson University. He received his BS degree in electrical engineering and MS degree in systems engineering from the Xi’an Jiaotong University, China, in 2001 and 2004, and Ph.D. degree in electrical engineering from the Illinois Institute of Technology in 2008. He has over 10 years of experience in power systems research and teaching. He is the co-author of over 20 journal papers and the recipient of Transactions Prize Paper Award from Power System Operation Committee of the IEEE Power and Energy Society in 2009. He has a patent on “System of Power Systems Optimal Scheduling Based on Lagrangian Method” in China. He serves as reviewer of 10 technical journals in U.S. and Europe. His research interests include large-scale power systems stochastic modeling and optimization, secure and economic operation of power systems, renewable energy integration, and smart grid cyber-security.

Impact of Stochastic Security on Power Systems Operation

As evidenced by recent blackouts, security remains to be the most important aspect of power systems operation. A Stochastic Security-Constrained Unit Commitment (SSCUC) model is discussed for optimizing system operation while maintaining security in an uncertain environment. The stochastic nature, including random outages of system equipments, wind volatility, and load forecast errors, is simulated by Monte Carlo method via multiple scenarios. The SSCUC is formulated as a two-stage stochastic problem, with the first stage considering an optimal operation decision for normal conditions, and the second stage examining the viability and optimality in scenarios. Wind volatility will be accommodated by preventive and corrective actions in the second stage. We proposed a rigorous formulation to consider quick-start generators’ commitment in scenarios for satisfying security constraints, and an extended Benders decomposition method for the solution. The SSCUC is also applies to other renewable energy forms with similar volatile natures, such as solar energy.