基于复合储能的微电网运行模式平滑切换控制.pdf

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基于复合储能的微电网运行模式平滑切换控制.pdf

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37 4 Vol. 37 No. 4 2013 4 Power System Technology Apr. 2013 1000-3673201304-0906-08 TM 72 A 470·4054 1 1 2 1 510663 2 510640 Control Method and Strategy for Smooth Switching of Microgrid Operation Modes Based on Complex Energy Storage 1 1 2 LIU Zhiwen , XIA Wenbo , LIU Mingbo (1. Guangdong Electric Power Design Institute, China Energy Engineering Group Co. Ltd., Guangzhou 510663, Guangdong Province, China; 2. School of Electric Power, South China University of Technology, Guangzhou 510640, Guangdong Province, China) ABSTRACT: In allusion to power imbalance during switching microgrid from grid-connected operation mode to non-plan island operation mode, under the premise of not changing the operation and control mode of distributed generations (DG) the complex energy storage device composed of super capacitor 0 and battery is taken as the main power supply during the island 2 operation of microgrid. A switching control strategy is drafted for the transition of operation mode of microgrid from grid-connected mode to non-plan island mode to ensure normal power supply for important load and normal operation of DGs (point of before and after the transition; when the operation mode of common couplingPCC) microgrid is s