【摘要】 针对多个储能电站参与一次调频的稳定运行问题，提出一种考虑荷电状态（SOC）均衡需求的储能电站协同调频控制策略。首先，建立含多个储能电站的区域电网调频控制模型，并分析储能电站参与一次调频的基本控制规律。其次，根据系统调频动作区和死区内的净功率变化，对不同工作阶段区间调频功率与SOC均衡功率的互补耦合特性进行分析，论证储能SOC均衡控制与调频需求协同响应的可行性，在此基础上设计储能的协同调频控制策略，并给出关键控制参数的设计方法。本文方法在改善分布式储能电站调频效果的同时，减小了储能电站SOC越限风险，使得其频率支撑能力更加稳定。最后，搭建典型区域电网模型，结合不同频率波动工况进行仿真验证，结果表明所提控制策略可以有效改善频率质量，在不增加系统调频负担的前提下实现多个储能电站的荷电状态均衡。更多还原

【Abstract】 To deal with the stable operation of multiple energy storage power stations participating in primary frequency regulation, a cooperative frequency regulation control strategy for energy storage power stations was proposed with the consideration of the State of Charge(SOC) equilibrium demand. Firstly, the frequency regulation control model of regional power grid with multiple energy storage power stations is established, and the basic control principle of energy storage power station participating in primary frequency regulation is analyzed. Secondly, based on the net power variation within the action zone and dead zone of frequency regulation, different frequency band power and coupling complementary characteristics of SOC balance power are analyzed. The feasibility of the energy storage SOC balanced control and coordinated control of frequency regulation demand is demonstrated, and frequency regulation is obtained on the basis of the design on the coordination of energy storage frequency regulation control strategy. The design method of key control parameters is given. The proposed method not only realizes the frequency regulation, but also reduces the SOC out-oflimit risk and enhances the frequency support effect. Finally, a typical regional power grid model is built and simulated with different frequency fluctuation conditions. The results show that the proposed control strategy can effectively improve the frequency quality and achieve the balance of the charged state of multiple energy storage stations without increasing the frequency regulation burden of the system.更多还原