摘要
分析研究表明 ,10 k V配电系统中 PT一次侧安装的熔断器在雷击时熔丝熔断的直接原因是 PT过流所致 ,即在大冲击扰动下 ,PT因饱和而使阻抗降低 ,电流猛增 ,使熔断器烧毁。
The reasons for fuses, installed at the PT primary winding, melt under lightning impulse in 10 kV power distribution systems are studied. The results show that the resistance of PT is small when surge voltage is applied on it, and the current within PT is extremely high so the fuses melt. The methods reducing the amplitude of surge voltage are put forward at the end of the paper.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2000年第4期46-47,共2页
High Voltage Engineering
