水轮发电机励磁碳刷滑环发热分析及压力试验

Heat Analysis of Hydro-Generator Excitation Carbon Brush Slip Ring and Pressure Experiment

碳刷和滑环是发电机励磁系统的重要组成部分。在发电机运行过程中,由于一些因素经常会出现碳刷发热、磨损的现象,严重影响发电机的安全运行。通过试验测试碳刷的受力情况,对两台发电机正极和负极各8块碳刷上的压簧压力进行分析,比较了两台发电机碳刷上的压簧压力,分析了碳刷发热、磨损的原因,并给出了更换建议。

Carbon brush and slip ring were important parts of the generator excitation system.Due to some factors,the phenomenon of carbon brush getting high temperature or wearing affected the safe generator operation seriously.The force of pressure spring was got on carbon brush by experiment,pressure values of both 8 positive carbon brush and 8 negative carbon brush in two generators were analyzed,the pressure spring pressure of two generators carbon brush was compared,reasons of brush getting high temperature were got,and proposals for change were given.