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Power source flexibility evaluation considering renewable energy generation uncertainty
Author(s): XIAO Dingyao, WANG Chengmin, ZENG Pingliang, SUN Weiqing, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, China Electric Power Research Institute, Department of Electrical Engineering, University of Shanghai for Science & Technology
Pages: 120-
125+139
Year: 2015
Issue:
7
Journal: Electric Power Automation Equipment
Keyword: renewable energy resources; electric power systems; flexibility; uncertainty; optimization; comprehensive evaluation table; inherent flexibility;
Abstract: Flexibility is an important index to evaluate the ability of power system against the uncertainty.Aiming at the uncertainty caused by the renewable energy and based on the characteristic analysis of flexibility,a mathematic model with a comprehensive evaluation system is proposed to evaluate the source flexibility of power system. The source flexibility model considers the maximum mutation of renewable energy generation and divides the constraints into traditional constraints and source flexibility constraints.According to different control methods and objects,a flexibility evaluation table is built in the evaluation system to reflect the state,variation and trend of flexibility during power system operation. The inherent flexibility index is used to compare the flexibility among different operating conditions or power systems.Case analysis verifies the effectiveness of the proposed evaluation system.
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