南方电网技术2025，Vol.19Issue(2)：36-47,12.DOI:10.13648/j.cnki.issn1674-0629.2025.02.005
电网电压暂降下配电网SOP系统的大信号稳定性分析及虚拟电容器控制策略
Large-Signal Stability Analysis and Virtual Capacitor Control Strategy of Distribution Network SOP System Under Grid Voltage Dips
摘要
Abstract
Soft open point(SOP)can provide real-time power flow control,fast fault self-healing and feeder load balancing,and has been widely used in distribution networks.However,grid voltage dips(GVD)are typical large disturbance conditions,and the stable operation mechanism of distribution network SOP under these conditions cannot be analyzed through small signal methods.Therefore,the mixed potential theory(MPT)is used to study the stability of SOP under GVD conditions,and the parameter optimiza-tion strategies and virtual capacitor control strategies are proposed.Firstly,a nonlinear average model of SOP is established.On this basis,the large signal stability criterion(LSSC)for SOP under GVD conditions is derived using MPT.In addition,in order to enhance the stability of the SOP system,parameter optimization strategies and control strategies for constructing virtual capacitors are proposed based on LSSC.Finally,the effectiveness of the above method is verified through MATLAB/Simulink time-domain simula-tion,namely:1)based on LSSC,the stability of SOP under GVD can be effectively analyzed;2)the system prameter optimization strategy based on LSSC and the construction of virtual capacitor control strategy can effectively improve the stable operation ability of the system under large disturbance conditions.关键词
电网电压暂降/智能软开关/混合势理论/大信号稳定性/虚拟电容器Key words
grid voltage dips/soft open point/mixed potential theory/large-signal stability/virtual capacitor分类
动力与电气工程引用本文复制引用
阚鹏,郑华俊,袁旭峰,熊炜,张超,蔡永翔..电网电压暂降下配电网SOP系统的大信号稳定性分析及虚拟电容器控制策略[J].南方电网技术,2025,19(2):36-47,12.基金项目
国家自然科学基金资助项目(52067004,52367005,52367019) （52067004,52367005,52367019）
国家重点研发计划资助项目(2022YFE0205300) （2022YFE0205300）
贵州省科技项目(ZK[2022]一般154 （）
[2022]一般012) （）
贵州大学引进人才科研项目(贵大人基合字[2020]16号). Supported by the National Natural Science Foundation of China(52067004,52367005,52367019) （贵大人基合字[2020]16号）
the National Key Research&Development Program of China(2022YFE0205300) （2022YFE0205300）
the Science and Technology Project of Guizhou Province(ZK[2022]General 154 （）
[2022]General 012) （）
Guizhou University Talent Introduction and Scientific Research Project(Grant[2020]No.16). （Grant[2020]No.16）
