摘要
针对甘棠变一起由雷击造成110kV线路三相近区故障、综自系统异常、田甘线202开关及白甘线201开关三跳事故,从继电保护原理、保护动作、直流系统故障和逆变电源异常等方面进行了分析;总结了暴露的问题,提出了解决办法和改进措施。
This paper describes a series of faults,about 110 kV line three-phase short line fault,integrated automation system failure and breaks trip-out,caused by lightning strike in Gantang substation.It analyses relaying protection principle,protection action,the DC system fault and the abnormal of inverter power source,and thus summarizes the questions exposed from the accident,makes out some methods to solve the problems and some improvement methods for power supply units to prevent the likely accidents.
出处
《福建电力与电工》
2009年第3期54-57,共4页
Fujian Power and Electrical Engineering
关键词
近区故障
综自系统
直流系统
雷击跳闸
short line fault
integrated automation system
DC system
lightning trip
