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《Yangtze River》 2018-18
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Study on consistency between maximum energy storage and minimum energy consumption in “regulating impoundment by power generation” mode

JI Changming;YU Hongjie;ZHANG Yanke;School of Renewable Energy,North China Electric Power University;  
Maximum energy storage and minimum energy consumption of cascade reservoirs are two optimization criteria commonly used in the"regulating impoundment by power generation"mode,which have the same objective of maximizing the benefits of power generation from two different angles. The traditional mode does not consider the effect of hydropower stations' efficiency and cannot truly reflect the operation goals. Besides,the two criteria use the average value in a time interval to calculate,which causes divergence. In view of the above problems,this paper introduces energy efficiency coefficient to reflect a hydropower station's capacity of utilizing hydropower resources,and improves the traditional criteria. By verifying the consistency of the improved criteria,a consistency model of energy storage and consumption in load distribution is built and applied to Pankou-Xiaoxuan cascade reservoirs. Results show that the improved maximum energy storage and minimum energy consumption criterion are completely consistent and can better reflect the operation goals of cascade reservoirs. Thus,the proposed model produces a greater optimization margin than the traditional one and can provide more effective guidance for optimal operation of cascade reservoirs in the "regulating impoundment by power generation"mode.
【Fund】: “十三五”国家重点研发计划项目(2016YFC0402208 2017YFC0405906);; 国家自然科学基金项目(51709105 51641901)
【CateGory Index】: TV697.1
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