计及系统经济性与荷电状态均衡的多储能电站调频双层功率优化策略  

A dual-layer power optimization strategy for multi-energy storage power station considering system economic efficiency and state of charge balance

作　　者：党少佳 孙利强[2] 王深友 田文涛[2] 胡鹏飞[1] DANG Shaojia;SUN Liqiang;WANG Shenyou;TIAN Wentao;HU Pengfei(Zhejiang University,Hangzhou 310000,Zhejiang,China;Inner Mongolia Electric Power Research Institute,Huhehot 010020,Inner Mongolia,China)

机构地区：[1]浙江大学,浙江杭州310000 [2]内蒙古电力科学研究院,内蒙古自治区呼和浩特010020

出　　处：《储能科学与技术》2025年第3期1247-1257,共11页Energy Storage Science and Technology

摘　　要：针对电网中不同储能电站调频成本存在差异,未考虑内部单元群出力效率以及荷电状态(SOC)均衡的问题,本文提出一种计及系统经济性与荷电状态均衡的多储能电站调频双层功率优化策略。上层计及SOC、健康状态(SOH)的抗拒系数,与储能调频内损成本、衰老成本构成目标函数,实现储能电站调频成本最小。下层构建储能单元充放电效率模型,设计了单元群充放电损耗最小与单元群SOC偏差值最小的多目标优化策略。仿真结果表明,本文策略相比于传统的分配策略,能够减少调频成本,降低储能单元群调频损耗,也能够计及SOC的均衡,避免单方面充放电。该策略既能保证储能电站调频的经济性,又能兼顾电站以及单元群SOC均衡,有利于延长储能电站使用寿命。This study addresses cost differences in frequency regulation among energy storage stations and inefficiencies related to state-of-charge(SOC)balance within energy storage cell groups.To address these issues,a two-layer optimization strategy is proposed.The upper layer minimizes frequency regulation costs by considering SOC,state-of-health(SOH),internal losses,and aging costs,while the lower layer employs a multi-objective optimization to minimize charging/discharging losses and SOC deviation within energy storage cell groups.Simulation results show that the proposed strategy reduces frequency regulation costs and losses compared with traditional methods,while maintaining SOC balance and preventing unilateral charging/discharging,thereby enhancing the economic efficiency of frequency regulation and contributing to the extended service life of energy storage units.

关 键 词：多储能电站 储能单元群 调频成本 SOC均衡 运行效率 

分 类 号：TM91[电气工程—电力电子与电力传动]