Reasonable modification to zero-sequence voltage circuit and proper operation can minimize losses caused by faults of this kind, if it happens again.
合理地变更PT零序电压回路接线和正确的操作，对再发生此类事故可减小事故损失。
The latter makes use of zero sequence voltage detection, alarm and display circuit.
信号报警显示部分由零序电压检测、报警、显示等电路构成。
It shows that DVR will inject small zero sequence component into the power system during compensation control even if there is no zero sequence circuit. This will influence the voltage on system side.
分析表明，即使系统不存在零序回路，DVR都会在补偿控制中向系统注入微小的零序分量，该零序分量会对无零序回路系统侧电压造成不良影响。
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