电气技术2026，Vol.27Issue(6)：60-65,71,7.
厄瓜多尔科卡科多-辛克雷水电站1号机定子绕组局部放电问题分析
Analysis on the partial discharge of the first generator stator winding in CoCa Codo Sinclair Hydropower Station in Ecuador
马文豪 1吴建辉 2王博功 1付强 3胡春秀3
作者信息
- 1. 哈尔滨电机厂有限责任公司,哈尔滨 150040
- 2. 北京华科同安监控技术有限公司,北京 100041
- 3. 哈尔滨电机厂有限责任公司,哈尔滨 150040||哈尔滨大电机研究所有限公司,哈尔滨 150040||水力发电设备全国重点实验室,哈尔滨 150040||国家水利发电设备工程技术研究中心,哈尔滨 150040
- 折叠
摘要
Abstract
The online partial discharge(PD)of the first generator,which has been operating for two years in the CoCa Codo Sinclair(CCS)Hydropower Station in Ecuador,was larger than that of the other generators.To analyze the reasons for the excessive PD,four offline PD detection tests were conducted from 2019 to 2022.The offline detection results showed that the PD of the A-phase branch 3 in the first test was twice that of the other branches,but in the subsequent tests,the value of the A-phase branch 3 dropped to the same level of the other branches.The value of branch 4 was higher in the last three tests,but there was no significant change.On the other hand,an analysis of the overall trend of online PD from 2016 to 2019 revealed that there were periods of temporary increase and stability,as well as periods of relatively low values.The increased PD pulse data was analyzed by using the software,and it was found that the original pulse data was incomplete,which led to deviations in the analysis of the cause.The analysis results indicate that the PD value of first generator remained within an acceptable range.Moreover,its performance has been stable over time.No corona phenomenon has been found on the surface of the stator bars.Therefore,the insulation performance of the stator winding is stable and no defects.关键词
水轮发电机/在线局部放电/离线局部放电/定子线棒Key words
hydro generator/online partial discharge/offline partial discharge/stator bars引用本文复制引用
马文豪,吴建辉,王博功,付强,胡春秀..厄瓜多尔科卡科多-辛克雷水电站1号机定子绕组局部放电问题分析[J].电气技术,2026,27(6):60-65,71,7.
