摘要
分析了目前国内配电网应用较为广泛的消弧系统晶闸管自触发一次阻尼方式的技术特点,指出了其存在的缺陷:由于晶闸管的耐压水平较低,而使其容易被损坏;不同档位的启动电压不一致而会使某些高阻接地情况下的消弧线圈无法投入补偿;因接地结束后阻尼电阻不能自动投入而容易出现"虚幻接地"现象等。
Preventing from series - resonance high voltage, the damping resistance must be connected to multi-tap arc suppressing coil when distribution system is in normal operation. The self-trigger primary damping way has been applied widely in multi - tap arc suppressing coil, which features and defects are respectively analyzed in this paper. There are three defects about the self- trigger primary damping way, the first is thyristors break easy for the primary over - voltage, the second is different tap with different threshold voltage, the last is the fake grounding often happen because of the damping resistance not working automatically.
出处
《电力设备》
2008年第10期68-70,共3页
Electrical Equipment
关键词
配电网
中性点接地
消弧线圈
阻尼电阻
晶闸管
distribution system
neutral grounding
arc suppressing coil
damping resistance
