摘要
介绍了10kV配网合环转电的几种方式。分析了稳态电流的影响因素,依据馈线保护整定原则,对合环过程中的冲击电流和稳态电流可能造成过流保护元件误动作的影响进行了分析。并对保护元件对合环和解环故障的灵敏度等问题进行了讨论,给出合环转电操作对继电保护影响的实用判据。
Several types of loop closing operation in 10kV distribution network are introduced.The influential factors of the steady state current are analyzed.According to the setting principle of feeder protection,the effect of the protection misoperation caused by the surge current and the steady state current during the loop closing operation is analyzed.The issue of the protection sensitivity is discussed and the practical criterion to analyze the effect on protection during the loop closing operation is introduced,it is significant to instruct the loop closing operation.
出处
《机电工程技术》
2009年第11期63-65,78,共4页
Mechanical & Electrical Engineering Technology
关键词
配网
合环转电
保护
灵敏度
distribution network
loop closing operation
protection
sensitivity
