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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 of shaft current of hydro-generator and its damage to generator are expounded. The current on-line monitoring method of shaft current of hydroelectric generator is deeply analyzed. Combined with the operation of on-line monitoring of shaft current of 700 MW hydroelectric generator in the Three Gorges Project, the advantages and disadvantages of on-line monitoring scheme are analyzed, and corresponding measures are put forward to further improve the measurement accuracy and monitoring level. And gives recommendations on how to select the configuration of the shaft current monitoring method for hydroelectric generators.