高压接地,是矿井供电较常见的一种故障。尤以井下高压铠装电缆出现接地为主。如不及时排除,势必会在接地处引起线路谐振,产生过电压,损坏电气设备或发展成相间短路,从而造成重大损失。但由于现有保护不尽完善,因此,给运行和维修人员在快 High-voltage grounding, mining power supply is a more common fault. Especially underground high voltage armored cable grounding. If not eliminated in time, it will inevitably cause line resonance at the ground, resulting in over-voltage, damage to electrical equipment or the development of phase short circuit, resulting in significant losses. However, due to the imperfect existing protection, the personnel for operation and maintenance are fast