Energy storage cluster secondary frequency modulation power distribution method considering response time and SOC balance

• Main Authors: LIU TINGXIANG, YANG LIBIN, ZHOU WANPENG, LI ZHENGXI, AN NA, NIAN HENG, WANG KAI, LO GUO-QIANG, DUAN XIAOHAN, SUN DAN
• Format: Patent
• Language: Chinese; English
• Published: 20.10.2023
• Subjects: CALCULATING; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; COMPUTING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; ELECTRICITY; GENERATION; PHYSICS; SYSTEMS FOR STORING ELECTRIC ENERGY; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR

The invention discloses an energy storage cluster secondary frequency modulation power distribution method and device giving consideration to response time and SOC balance, and the method comprises the steps: S1, dividing an energy storage unit into a power type energy storage unit and an energy type energy storage unit according to the response time and rated capacity of the energy storage unit, and judging the output demand of the energy storage unit according to the frequency deviation of a power grid; and S2, determining a power instruction of the energy storage cluster according to the interval of the power grid frequency at the initial moment so as to restrain the output power of the energy storage cluster, and solving the interval objective function to realize power optimization distribution. According to the method, the response time, the rated capacity and the output requirements of different energy storage units are distinguished, and the corresponding objective function is solved according to diffe