有色设备

Neutral grounding operation mode in power system is a very complex issue. It is related to voltage level, single-phase grounding short-circuit current, overvoltage level and protection configuration, and it can directly affect insulation level, reliability and continuity of system power supply, communication interference and many other aspects. Combined with the design case of an overseas project, this paper introduces the selection process of neutral grounding mode and the parameter calculation of related grounding elements.