隔河岩水电站机组一次调频运行情况分析

Operation analysis on primary frequency regulation of hydro-generating units of Geheyan Hydropower Station

对电厂机组一次调频运行的分析证明用齿盘测速器测速经常受到机组大轴摆动的影响,导致测频的精度不高。因此推荐采用齿盘测频与残压测频相结合的方案来加以改进。

The operation analysis on the primary frequency regulation evidently shows that the speed detecting precision by fluted disc detector is frequently disturbed by the periodic swing of the generator main shaft and brings abnormal result.Therefore,an improvement scheme is recommened that the rotational speed be detected by fluted disc detector cooperated with residual voltage.