摘要
对一起35kV开关雷击爆炸事故进行分析,结合现场勘查,指出了事故的直接原因是断路器无法及时开断由雷击造成的近区故障短路电流。对事故涉及的雷击机理进行了阐述,结合运行经验,给出了解决问题的解决方案,即安装线路避雷器,对避雷器的参数选择、安装位置提出了有实用价值的建议,以防止类似事故再次发生。
The process and disposal of a 35 kV circuit breaker fault caused by muhi-lightning strikes were analyzed, combined with on-site inspection of accident, pointed out that the circuit breaker cannot quickly switch off the fault cur- rent caused by short line fault is the direct cause of the accident. The lighting mechanism was described, the rational sug- gestions and preventative measures were provided in order to stop the similar faults happen once more.
出处
《电气开关》
2013年第3期79-82,共4页
Electric Switchgear
关键词
断路器
变电站
雷击
线路避雷器
circuit breaker
substation
lightning stroke
line surge arrester
