35 kV电网继电保护二次回路故障诊断方法  

Fault Diagnosis Method for Secondary Loop of Relay Protection in 35 kV Power Network

作　　者：常煜 齐晓光 CHANG Yu;QI Xiaoguang(State Grid Julu Power Supply Company,Hebei Xingtai 055250,China;State Grid Longyao Power Supply Company,Hehei Xingtai 055350,China)

机构地区：[1]国网巨鹿县供电公司,河北邢台055250 [2]国网隆尧县供电公司,河北邢台055350

出　　处：《电工材料》2021年第6期65-67,共3页Electrical Engineering Materials

摘　　要：对35 kV电网继电保护二次回路故障诊断方法进行设计,可以先计算二次回路广义变比,在此基础上,设计继电保护重叠误差故障诊断模型,通过多参量融合法实现故障诊断。结果表明:重叠故障诊断测试组最终的误差率更低,诊断效果更佳,具有一定的实际应用意义。When designing the fault diagnosis method for secondary loop of 35 kV grid relay protection,the generalized variable ratio of the secondary loop can be calculated first.On this basis,the fault diagnosis model of relay protection overlap error is designed and the fault diagnosis is realized by multi-parameter fusion method.The results show that the final error rate of the overlapping fault diagnosis test group is lower,the diagnosis effect is better and it has certain practical significance.

关 键 词：供电网 继电保护 二次回路 故障诊断 诊断方法 智能变电站 

分 类 号：TM63[电气工程—电力系统及自动化] TM77