Development on the research of circulating current of generator stator bar strands

摘要

From the beginning of 1970’s,the research work onstrand current distribution in hydro-generator statorbars has been made marked progress in China.In order to know whythe generator bar insulations were broken down so often both in op-eration and in testing after the generators being put into operation for8-10 years at Xinanjiang Hydropower Station.Investigations wereconducted and the results of field measurement showed that