电力系统保护与控制2026，Vol.54Issue(11)：49-60,12.DOI:10.19783/j.cnki.pspc.251321
适用于含分布式电源配电网的故障性质识别方法
Fault type identification method for distribution networks with distributed generation
摘要
Abstract
In distribution networks with distributed generation,if circuit breakers blindly reclose onto permanent faults,the resulting transient stress can cause severe impacts on the distribution network and lead to secondary voltage dips in distributed generation units,thereby increasing the probability of disconnection and affecting overall system stability.To address this problem,a permanent fault identification method suitable for active distribution networks is proposed based on phase segregated switch technology.First,considering the low-voltage ride-through capability and current-limiting characteristics of distributed generation,an equivalent analytical model of distributed generation is established,and their influence on auto-reclosing operations in distribution networks is investigated.Second,voltage characteristics under different fault types during single-phase reclosing are analyzed,and a fault type identification criterion based on the voltage recovery ratio is proposed.Finally,simulation results show that the proposed fault type identification method can accurately distinguish transient faults and permanent faults under different fault types.The method is not affected by the capacity of distributed generation and fault location,and has strong tolerance to transition resistance.关键词
有源配电网/自适应重合闸/永久性故障/分相开关/故障恢复Key words
active distribution network/adaptive auto-reclosing/permanent fault/phase segregated switch/fault recovery引用本文复制引用
高淑萍,董晨,宋晨曦,王跃跃,赵欣煜,宋国兵..适用于含分布式电源配电网的故障性质识别方法[J].电力系统保护与控制,2026,54(11):49-60,12.基金项目
This work is supported by the General Program of National Natural Science Foundation of China(No.52577138). 国家自然科学基金面上项目资助(52577138) （No.52577138）
国家自然科学基金青年科学基金项目资助(C类)(52507146) （C类）
陕西省自然科学基金面上项目资助(2024JC-YBMS-792) （2024JC-YBMS-792）
