摘要
某220kV变电所更换#2主变220kV正母闸刀,新设备投产冲击试验时220kV侧全部保护发"母线电压消失"信号。通过分析,确认为二次电压回路原理缺陷引起,并从运行操作上提出防范措施。
When the isolators of No.2 transformer 220kV bus-bar I was changed in a 220kV substation, the protection of 220kV transmit the 'bus-bar voltage failure' signal during the impulse test. Through analyzing the protections circuit, this paper reveals that the course of the accident is the defect in secondary voltage circuit. Some preventive treatments are also proposed in operation
出处
《电气技术》
2008年第12期76-78,共3页
Electrical Engineering
关键词
二次回路
电压切换
失压
防范措
secondary circuit
voltage switching
loss of voltage
preventive treatments
