水轮发电机轴电流在线监测方案探讨

Discussion on Shaft Current On-line Monitoring of Hydro-generators

阐述了水轮发电机轴电流产生的原因和对发电机造成的危害,就目前在线监测水轮发电机轴电流的方法进行了深入分析。结合三峡工程700 MW水轮发电机轴电流在线监测的运行情况,分析了在线监测方案的优缺点,为进一步提高测量精度和监测水平提出了相应措施。并对水轮发电机如何选择配置轴电流监测方法给出了推荐意见。

The cause and harm of the shaft current to hydraulic generators are expatiated. The on-line monitoring methods of the shaft current at present are introduced. According to the practice of the shaft current on-line monitoring for the 700 MW hydraulic generator of the Three Gorges Project, the features of various shaft current on-line monitoring methods are analyzed,and corresponding measures to improve the precision and level of shaft current on-line monitoring are presented. Recommendations for selection and configuration of shaft current on-line monitoring are put forward.