10kV可控电阻接地系统接地变零序电流保护若干问题的研究

Research on some problems of ground transformer zero sequence current protection in 10kV controlled resistance grounding system

10kV可控电阻接地系统具有瞬时性接地快速灭弧、可靠切除永久性故障的优点,已得到广泛的应用.本文就可控电阻接地系统接地变零序电流保护的若干问题进行了研究,并提出了相应良好的解决方案.

The 10kV grounding system with controllable resistance has the advantages of rapid arc extinguishing while instantaneous grounding and reliable fault removal while permanent failure, has been widely used. In this paper, some problems of zero sequence current protection for grounding transformer in grounding system with controllable resistance are studied, and the corresponding optimal solution is put forward.