吉牛水电站水轮发电机碳刷、集电环的运行隐患分析与治理  

Potential Operation Hazards Analysis and Treatment of Carbon Brush and Collector Ring of Hydro-generator in Jiniu Hydropower Station

作　　者：李政 李巍 卿启维 LI Zheng;LI Wei;QING Qiwei(Sichuan Geshiza Hydropower Development Co., LTD, Danba, Sichuan, 626302)

机构地区：[1]四川革什扎水电开发有限责任公司,四川丹巴626302

出　　处：《四川水力发电》2020年第3期133-136,共4页Sichuan Hydropower

摘　　要：冲击式大型发电机励磁电流大,集电环直径大,机组转速较高,圆周线速度高,机组摆渡、震动较其他机型相对较大,这对发电机集电环和碳刷提出了较高的要求。本文主要对吉牛水电站2号机组集电环、导电环、碳刷、刷握的结构形式、运行异常状况进行了物理分析,在机组最大运行方式下对碳刷励磁电流、集电环电流进行计算,并依据分析结果对碳刷、集电环进行改造,改造后机组碳刷、集电环的运行效果良好,原有的设备隐患消除。Large impulse generator has large excitation current,large collector ring diameter,high rotate speed,high peripheral speed,and relatively large unit swing and vibration compared with other models,which puts forward higher requirements for collector ring and carbon brush of generator.In this paper,the structure and abnormal operation of the collector ring,conducting ring,carbon brush and brush holder of 2#generator unit of Jiniu Hydropower Station are analyzed.The excitation current and collector ring current of the carbon brush are calculated under the maximum operation mode of the generator,and the carbon brush and collector ring are modified according to the analysis results.The operation effect of the carbon brush and collector ring is good after the improvement,the potential hazards of the original equipment has been eliminated.

关 键 词：水轮发电机 碳刷 集电环 隐患分析 

分 类 号：TM312[电气工程—电机] TQ175.714[化学工程—硅酸盐工业]