Multi-time scale energy storage power station frequency modulation control method and system

• Main Authors: JIANG XIAOLIANG, ZHANG LIHUA, LI JIE, SI RUIHUA, CHENG YUMING, WANG CHUANJIE, MENG GAOJUN, XING PENGXIANG, LIU WANXUN, SHAO HONGBO
• Format: Patent
• Language: Chinese; English
• Published: 14.04.2023
• 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 provides a multi-time-scale energy storage power station frequency modulation control method, belongs to the technical field of power system energy storage power station frequency control, and provides a primary frequency modulation and secondary frequency modulation coordinated multi-time-scale control technology aiming at the problems that the primary frequency modulation stabilization time of an energy storage system is short and the theoretical value of primary frequency modulation cannot be reached when an accident occurs. After the primary frequency modulation action of the energy storage power station, secondary frequency modulation ACG is started in a delayed mode, and the starting criterion is delta fgt; the frequency is 0.033 Hz; adjusting the SOC of each energy storage unit according to the energy storage charging power prediction, the load power prediction and the corrected next-day scheduling discharging plan; and determining power output of each energy storage unit in the AGC instr