An optimized partitioning method to balance region of wind power considering energy storage system

Abstract

Since high penetration of wind power in local power grid is difficult to effectively accommodate, an optimized partitioning method to balance region of wind power considering energy storage system is proposed in this paper. The influence factors that energy storage system may have on the partition of the regional balance of wind power are studied and the mathematical model including the load dominant characteristics index, the peak-shaving margin in the system and the annual average cost of external transmission channel construction is established, based on which a new partitioning method to balance region of wind power is proposed; at the same time, the charging and discharging control strategy of energy storage to stabilize wind power fluctuations and peak load shifting are put forward, further establishing the mathematical model and optimized partitioning process to balance region of wind power considering energy storage system. The ideal scheme about optimized partition the regional power network with balance of wind power is obtained in the end by comparing and contrasting safety and economical efficiency between them. Finally the method is verified that it can effectively improve the absorptive capability of wind power through the example simulation based on a regional power grid.