基于调频信号优化的储能调频控制策略  

Control Strategy of Energy Storage Frequency Regulation Based on Frequency Regulation Signal Optimization

作　　者：于会群 帅永生 靳东辉 YU Huiqun;SHUAI Yongsheng;JIN Donghui(School of Automation Engineering,Shanghai University of Electric Power,Shanghai 200090,China)

机构地区：[1]上海电力大学自动化工程学院,上海200090

出　　处：《电源学报》2025年第1期101-110,共10页Journal of Power Supply

基　　金：国家自然科学基金重大研究计划培育资助项目(92067105);上海市“科技创新行动计划”地方院校建设资助项目(20020500500)。

摘　　要：随着风电等可再生能源的大规模并网,传统调频电源的调频容量和调频效果等难以满足电网需求。为此,提出1种基于调频信号优化的电池储能系统辅助火电机组参与二次调频的综合控制策略。首先,建立符合电网调频需求的储能仿真模型,基于此模型对区域控制误差信号和区域调频需求信号的分配模式进行复频域分析,结合这2种控制信号的优势确定调频信号的切换判据;然后,考虑储能调频过程中的经济性和调频效果,以减小频率偏移和调频成本优化为目标,通过基于分解的多目标进化算法优化其分配系数;最后,通过阶跃扰动分别仿真验证调频信号切换判据和多目标进化算法优化储能分配系数的有效性,通过连续扰动对综合控制策略进行仿真验证,结果表明该策略不仅可以有效减小系统频率偏差,还降低了储能的运行成本。With the large-scale integration of wind power and other renewable energy sources,the frequency regulation capacity and effect of traditional frequency regulation power sources are difficult to meet the requirements of power grid.To solve this problem,a comprehensive control strategy based on the frequency regulation signal optimization of a battery energy storage system which assists the thermal power unit to participate in secondary frequency regulation is proposed.First,a simulation model of energy storage that meets the power grid’s frequency regulation requirements is established.Based on this model,the allocation mode of area control error signal and area frequency regulation requirement signal is analyzed in the complex frequency domain,and the switching criterion for frequency regulation signal is determined by combining the advantages of the two control signals.Then,considering the economy and efficiency of energy storage frequency regulation,the allocation coefficient is optimized by a decomposed multi-objective evolutionary algorithm to reduce the frequency offset and optimize the cost of frequency regulation.Finally,the effectiveness of frequency regulation signal switching criterion and multi-objective evolutionary algorithm in optimizing the energy storage allocation coefficient is verified by step disturbance simulation.The comprehensive control strategy is verified by continuous disturbance simulation,and results show that it can not only reduce the system frequency offset effectively,but also lower the operating cost of energy storage.

关 键 词：电池储能 二次调频 分配信号优化 成本优化 多目标进化算法 

分 类 号：TM732[电气工程—电力系统及自动化]