电池储能参与电网一次调频的优化综合控制策略

Optimized integrated control strategy of battery energy storage participating in primary frequency regulation of power grid

为研究电池储能系统(Battery Energy Storage System,BESS)参与电网一次调频的高效性控制策略。本文在对电力系统调频需求进行分析与储能电池荷电状态(State Of Charge,SOC)考虑的基础上,提出一种兼顾电网调频需求与储能电池SOC状态的一次调频综合控制策略,给出不同荷电状态下的控制策略下垂系数自适应优化与均衡调节控制方法,实现了储能电池参与一次调频的自适应调整与状态均衡,并基于含储能电池的区域电网调频仿真模型,分别在阶跃扰动与连续扰动下对所提控制方法进行仿真分析。结果表明,所研究控制策略在电力系统频率调节与电池SOC保持方面均具有较佳的效果。

To study the efficient control strategy of Battery Energy Storage System(BESS)participating in the primary frequency regulation of the power grid,based on the analysis of the power system frequency modulation demand and the consideration of the state of charge(SOC)of the energy storage battery,this paper proposes a comprehensive primary frequency modulation control strategy that takes into account the grid frequency modulation demand and the SOC state of the energy storage battery,and the droop coefficient self-adaptive optimization and equalization control method are given under different states of charge.The battery can participate in the adaptive adjustment and state balance of the primary frequency modulation.Based on the regional power grid frequency modulation simulation model with energy storage batteries,the proposed control method is simulated and analyzed under step disturbance and continuous disturbance.The results show that the studied control strategy has advantages in both power system frequency adjustment and battery SOC maintenance.