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Survey on energy storage battery in renewable energy distributed generation system

LIU Sheng-yong1,2,ZHANG Xing1 (1.School of Electric Engineering and Automation,Hefei University of Technology,Hefei Anhui 230009,China; 2.Department of Electronic Info and Control Engineering,Guangxi University of Technology,Liuzhou Guangxi 545006,China)  
Wind,PV and other renewable energy distributed generation(DG) are intermittent and random generation by the occurring weather and climate,and its unstability is the major obstacle to its extensive development.The development and application of energy storage technology solves the problem of connection of the wind power and photovoltaic power generation to the grid and eliminates the consumption problem.The technology development,structure and principle of energy storage of primary chemical storage batteries including lead acid battery,flow battery,sodium sulfur battery and lithium battery were described,their performance and characteristics were compared,and especially,their energy density,power density and power level were introduced in detail,which was the key to select the battery energy storage system.Finally,the future application and development of energy storage batteries was proposed.
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