多相交流系统中，实际的或等效的中性点与参考地之间的电位差。
针对变电所消弧线圈接地系统在正常运行情况下中性点位移电压长时间偏高现象，进行了分析。
The abnormal phenomenon of long time higher neutral voltage shift in a substation is analyzed, which is grounded through arc suppression coil.
在谐振接地系统中，系统高压侧不对称故障及负荷的不对称会引起系统电源电势的不对称，从而改变中性点位移电压。
In resonant ground systems, both asymmetric fault of high-voltage side and asymmetry of load cause the asymmetry of system electrical source voltage. Then they change neutral displacement voltage.
故可得出结论：在中性点绝缘系统中，因电磁式电压互感器饱和引起的过电压现象属于工频位移过电压。
Therefore, the over-voltage caused by the electromagnetic voltage transformer saturation in the system with insulated neutral belongs to shifting over-voltage.
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