600MW机组定子接地保护用三次谐波电压异常的分析  

Abnormity Analysis about the Third Harmonics Voltage Used in Stator Earth Fault Protection of 600 MW Generators

作　　者：井雨刚[1] 王昕[1] 王涛 苏文博[1] 姜保光 

机构地区：[1]山东电力研究院,山东济南250002 [2]国网技术学院,山东济南250002 [3]山东电力建设第二工程公司,山东济南250100

出　　处：《山东电力技术》2010年第5期22-23,共2页Shandong Electric Power

摘　　要：介绍一起定子接地保护用三次谐波电压异常情况的分析处理过程,找出了异常的原因,建议重视启动前定子绕组的绝缘测量,特别不要忽略配电变压器高压绕组,建议在现场试验时对三次谐波电压进行仔细的现场测量和分析,对三次谐波电压式定子接地保护进一步调整,以达到最佳运行工况。In this paper, an abnormity of stator earth fault protection based on third harmonics voltage is presented and analyzed. During field commissioning, the measurement of stator insulation, distribution transformer insulation and the magnitude of third harmonies voltage before startup are suggested in order to achieve optimal behavior of stator earth fault protection.

关 键 词：定子 接地保护 三次谐波 

分 类 号：TM772[电气工程—电力系统及自动化]