三角形和双Y形绕组转换的高压双速电机差动保护CT配置方案的应用研究  

An Applied Research on the CT Configuration Scheme for the High-Voltage Double-Speed Motor Differential Protection with the Delta and Double Y-Shaped Winding Conversion

作　　者：刘金广 LIU Jinguang(Shajiao C Power Plant,Dongguan Guangdong 523908,P.R.China)

机构地区：[1]广东能源集团沙角C电厂,广东东莞523908

出　　处：《重庆电力高等专科学校学报》2020年第2期4-7,共4页Journal of Chongqing Electric Power College

摘　　要：以某电厂引风机电机增容改造采用三角形和双Y形接线方式的单绕组双速电机为例,通过对比分析和测试该电机在两种运行方式下的差动保护CT配置方案,解决了电机绕组为三角形和双Y形接线单绕组双速电机的差动保护CT配置问题。The single-winding and double-speed motor with Delta and double Y-shaped wiring used in the capacity increase renovation of the motor of the draft fan is taken for example. This paper introduces the comparative analysis and test of the CT configuration schemes for the differential protection of the motor in two modes of operation and comes up with a better solution.

关 键 词：单绕组双速电机 三角形 双Y形 差动保护 CT配置 

分 类 号：TM621.2[电气工程—电力系统及自动化]