小水电站励磁回路工作正常与否，是保证发电机安全，经济发供电的重要环节。水轮发电机的电刷和滑环是励磁电流通过的关键部位。电刷冒火导致发电机不能正常运行，在小水电站中较为普遍，严重时被迫停机，这不仅影响电站经济效益，而且危害机组运行安全。因此，正确分析电... Small hydropower excitation circuit is working properly or not, is to ensure the safety of generators, economic power generation an important part. Hydrogenerator brush and slip ring is the key part of the excitation current. Brush blaze led to the generator can not operate normally, it is more common in small hydropower plants and is forced to stop in serious cases. This not only affects the economic benefits of the hydropower station, but also endangers the operation safety of the unit. Therefore, the correct analysis of electricity ...