据1993年底统计,日本东京电力公司共有156座水电厂,投运的水轮发电机有281台。这些发电机,由于其设计、制造时间和运行状况各不相同,因而其定子绕组的绝缘劣化状况并不相同,所以,它们的更新周期也是不相同的。 本文研究如何准确掌握每台水轮发电机定子绕组的剩余寿命,以及如何尽可能合理确定绕组的更新时间等问题。 According to the statistics of the end of 1993, Tokyo Electric Power Company has a total of 156 hydropower plants and 281 hydroelectric generators put into operation. These generators, because of their design, manufacturing time and operating conditions vary, so the stator winding insulation degradation is not the same, so the update cycle is not the same. This paper studies how to accurately grasp the remaining life of each hydro-generator stator windings, as well as how to determine the winding as reasonable as possible, such as the update time.