某220kV变电站断路器误动事故的调查及讨论  

Investigation and Discussion on the Switch Tripping Accident of a 220 kV Substation

作　　者：毛文奇[1] 李娥英[1] 

机构地区：[1]湖南省电力试验研究院,湖南长沙410007

出　　处：《高压电器》2006年第3期239-240,共2页High Voltage Apparatus

摘　　要：对长沙220 kV芙蓉变无功投切过程中的过电压水平及220 V直流电源系统压敏电阻的伏安特性进行了现场试验,并对D25多功能智能电子设备进行了电磁兼容及高温试验,试验结果表明,芙蓉变断路器误动事故与系统开关及无功投切过电压无关。The field tests to overvoltage level during the process of cutting on/off reactive power and the V-A characteristic of varistor used in the 220 V DC power supply system are carried out in the 220 kV Furong substation. The EMC and high temperature tests are developed to the model D25 multifunctional intelligence electronic equipment. The results indicate that the switch accident has nothing to do with the system switch and the overvohage.

关 键 词：断路器 误动 过电压 无功投切 压敏电阻 

分 类 号：TM561[电气工程—电器]