电池储能辅助二次调频的模型预测控制方法  

Model predictive control method for battery energy storage assisting secondary frequency regulation

作　　者：刘起兴 和识之 卢伟辉 王皓怀 Liu Qixing;He Shizhi;Lu Weihui;Wang Haohuai(Power Dispatching&Communication Center,China Southern Power Grid Co.,Ltd.,Guangzhou 510623,China)

机构地区：[1]南方电网电力调度控制中心,广州510623

出　　处：《电测与仪表》2020年第23期119-125,共7页Electrical Measurement & Instrumentation

基　　金：中国南方电网公司重点科技项目(ZDKJXM20180027)。

摘　　要：随着大规模新能源并入电网,电池储能凭借其迅速、精准出力的特性,可以有效抑制自动发电控制中由于新能源出力波动而带来的频率稳定问题。为此,文中提出电池储能辅助二次调频的模型预测控制策略。该控制策略将二次调频的区域控制偏差信号划分成不同的区间,在兼顾电网调频需求及电池储能荷电状态恢复需求的前提下,通过模型预测控制方法确定每个区间内电池储能的出力目标与出力深度。两区域双机互联电网算例的仿真结果表明:文中所提的控制策略不仅能有效抑制电网频率偏差和区域控制偏差,还能协调好频率控制质量与电池储能荷电状态的平衡。With the integration of large-scale new energy into the power grid,battery energy storage can effectively suppress the frequency stability problem caused by the fluctuation of new energy power in automatic generation control due to its fast and accurate characteristics.Therefore,a strategy of battery energy storage assisting secondary frequency regulation based on model predictive control is proposed in this paper.Considering the frequency regulation demand of power grid and the recovery requirement of state of charge(SOC)of battery energy storage,the strategy divides the area control error signal into different intervals.Then,the output target and output depth of the battery energy storage are determined based on the model prediction control method in each interval.Taking the frequency regulation model of two-zone two-machine interconnected power grid as an example,the simulation results show that the strategy proposed in the paper can not only effectively suppress the frequency deviation of power grid and area control error,but also coordinate the balance between frequency control quality and the SOC of battery energy storage.

关 键 词：电池储能 互联电网 自动发电控制 模型预测控制 区域控制偏差 

分 类 号：TM732[电气工程—电力系统及自动化]