真空断路器的过电压及其防护  

Vacuum circuit breaker's over-voltage and its countermeasure

作　　者：王文军 张俊玲 周萍 张林 秦清振 赵亮亮 

机构地区：[1]国电科学技术研究院,江苏南京210031 [2]兰州西固热电有限责任公司,甘肃兰州730060

出　　处：《电力科技与环保》2012年第3期58-60,共3页Electric Power Technology and Environmental Protection

摘　　要：在10kV及以下电压等级配电网络中,真空断路器已取代油断路器,在无油化改造过程发挥了积极作用。与油断路器相比,真空断路器具有适合频繁操作,电寿命长,检修维护工作量小,防燃、防爆,运行可靠性高等优点。但在开断交流小电流时会出现过电压现象,阐述了过电压的产生、危害及其防护措施。At present, oil circuit breaker has been replaced by vacuum circuit breaker,which plays an active role in the process of oilless reform in 10 kV distribution network and below. Compared to oil circuit breaker,vacuum circuit breaker is suitable for frequent operation. It has long life and high reliability. It requires less maintenance. However, overvoltage occurs when low AC current is switched. The production mechanism of overvoltage is analyzed,and its damage and prevention measures are discussed.

关 键 词：真空断路器 过电压 产生 防护 

分 类 号：TM561[电气工程—电器]