浅析消弧线圈在10kV配电网中的应用

Analysis the Arc Suppression Coil in 10k V Distribution Network Application

随着经济水平的提高,配电网中电缆的使用量日趋提高,由此而产生的电网中容性电流随之增大。传统的接地方式中,中性点不接地运行已经不能保证配电网供电的稳定性。而在中性点经过消弧线圈接地方式运行时,可以很好地补偿电网中发生短路接地时的容性电流。该文通过分析中性点经消弧线圈接地的基本原理及中性点经消弧线圈并电阻、串电阻接地的优缺点,提出一种中性点经可控消弧线圈并电阻接地运行的方式并论证此方式的可行性。

With the improvement of economic level,the cable used in distribution network is rising,as a result, the captive current in grid increased.The traditional way of grounding,Ungrounded operation can not guar-antee the stability of power distribution network.But running through the arc suppression coil grounding neu-tral point,the captive current can be compensated very wel when the grid shorted to ground.This paper an-alyzes the basic principle of the neutral point via arc suppression coil grounding and neutral point via arc suppression and paral el resistance,series resistance grounding of the advantages and disadvantages,pro-posed a neutral point via control able Petersen coil paral el resistance grounding and demonstrate the feasi-bility of this approach.