110kV变压器中性点取消独立间隙电流互感器分析

Abstract院In 110kV grid neutral zero sequence protection and clearance protection based on zero sequence current transformer andthe clearance of current transformer is widely used for the protection of main transformer neutral point. This paper analyzes the two faultsand the principle of protection and the realization process and discusses the feasibility of canceling the independent clearance.院电力系统及其自动化 变压器中性点零序保护 探讨分析 简化 应用Key words院electric power system and its automation transformer neutral point zero sequence protection investigate analysis simplified application中图分类号院TM452 文献标识码院A 文章编号院1006-4311（2014）31-0056-02