用于构网型配储风机的储能DC/DC变换器动态性能提升方法  

Dynamic performance improvement method of energy storage DC/DC converter for grid-connected wind turbine with energy storage

作　　者：史皓男 孙毅超 唐小波 王伟[1] 杨冬梅 韦徵 SHI Haonan;SUN Yichao;TANG Xiaobo;WANG Wei;YANG Dongmei;WEI Zheng(State Key Laboratory of Smart Grid Protection and Operation Control(NARI Group(State Grid Electric Power Research Institute)Co.,Ltd.),Nanjing 211106,China;NARI School of Electrical and Automation Engineering,Nanjing Normal University,Nanjing 210023,China)

机构地区：[1]智能电网保护和运行控制国家重点实验室(南瑞集团(国网电力科学研究院)有限公司),江苏南京211106 [2]南京师范大学南瑞电气与自动化学院,江苏南京210023

出　　处：《电力工程技术》2025年第2期34-43,共10页Electric Power Engineering Technology

基　　金：智能电网保护和运行控制国家重点实验室项目(SGNR0000KJJS2302136)资助。

摘　　要：风力发电机内部配储系统通常需要采用DC/DC变换器连接到直流母线,而采用传统比例积分(proportional integral,PI)控制的储能DC/DC变换器由于动态性能不佳,在电网惯量/频率支撑过程中易导致母线电压跌落较多甚至产生欠压停机的风险。文中提出采用自抗扰控制对LLC型储能DC/DC变换器的抗扰性能与动态性能进行提升,并利用改进灰狼算法对自抗扰控制器的6个核心参数进行离线自寻优。改进灰狼算法将动态邻域搜索引入到传统灰狼算法的位置更新策略中,有效提升了自寻优算法的收敛速度。所提改进灰狼优化自抗扰控制方法能够缩短母线电压恢复时间,快速协调配储风机和电网之间的能量交换,有效提升配储风机的母线电压稳定性和惯量/频率支撑能力。MATLAB/Simulink仿真结果验证了文中所提控制方法的可行性和有效性。The internal storage system of a wind turbine usually needs to be connected to the DC bus using a DC/DC converter.However,due to the poor dynamic performance of the energy storage DC/DC converter using traditional PI control,it is easy to cause a large drop in bus voltage or even the risk of undervoltage shutdown during the grid inertia/frequency support process.This paper proposes adopting auto-disturbance rejection control to improve the anti-disturbance performance and dynamic performance of LLC type energy storage DC/DC converter,and employing the improved gray wolf algorithm to perform offline self-optimization on the six core parameters of the auto-disturbance rejection controller.The algorithm introduces dynamic neighborhood search into the position update strategy of the traditional gray wolf algorithm,which effectively improves the convergence speed of the self-optimization algorithm.The proposed improved gray wolf optimized autodisturbance rejection control method can effectively shorten the bus voltage recovery time,quickly coordinate the energy exchange between the storage wind turbine and the grid,and effectively improve the bus voltage stability and inertia/frequency support capability of the storage wind turbine.The MATLAB/Simulink simulation results verify the feasibility and effectiveness of the control method proposed in this paper.

关 键 词：LLC型储能DC/DC变换器 自抗扰控制 改进灰狼算法 离线自寻优 动态领域搜索 配储风机 

分 类 号：TM46[电气工程—电器]