1000 MW汽轮发电机轴电压高原因分析  

Cause Analysis of High Voltage in Shaft of 1 000 MW Turbine Generator

作　　者：袁丁 YUAN Ding(Dongfang Electric Machinery Co.,Ltd.,618000, Deyang,Sichuan, China)

机构地区：[1]东方电气东方电机有限公司,四川德阳618000

出　　处：《东方电气评论》2017年第3期32-36,共5页Dongfang Electric Review

摘　　要：山东某1 000 MW热电厂1#机在试运行过程中出现短时间内轴瓦温度快速升高、振动增大情况,停机检查发现轴瓦出现严重的电腐蚀和磨损。分析认为,事故原因为发电机轴电压高加之绝缘值降低从而产生电腐蚀,进而使油膜破坏,导致轴瓦磨损。During testing and commissioning of a thermal power plant(1000MW per unit)in Shandong province,rapid increase of temperature and vibration of bearing are observed.Subsequent inspection and survey indicate there is electric corrosion in the bearing that is worn seriously,and cause analyses are followed.Reason of the accident is the high shaft voltage and low insulation,which resulted in the electric corrision that make the oil slick damage,and eventually lead to the wearing of the bearing.

关 键 词：1000MW汽轮发电机 轴瓦 轴电压 电腐蚀 

分 类 号：TM621.3[电气工程—电力系统及自动化]