The paper introduces equipment of intelligent arc suppression coil grounded compensation. Itovercomes shortcoming in restricting harmonic over-voltage existed in old arc suppression coil.
国产智能型消弧限压接地补偿成套装置在限制谐振过电压方面，克服了老式调匝式消弧线圈存在的缺点。
2
The reduction of the residual current of the ground-fault point is beneficial to the extinction of the grounding arc and to the reduction of the intermittent arc grounding overvoltage.
减小接地故障点的残流有利于接地电弧的瞬间熄灭及降低间歇性电弧接地过电压。
3
When the over-voltage is 100 ~ 150 v, the ceramic level corrosion resistance is good. Therefore, the micro-arc oxidation of Mg alloy should choose the suitable over-voltage.