Diagnosis and treatment of leakage fault of 330 MW turbine generator stator bar

REN Zhang’ao; YOU Kai; HAO Jianbo; YAN Ying; YAN Guilin; XU Bo

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Diagnosis and treatment of leakage fault of 330 MW turbine generator stator bar

更新时间：2025-11-18

- Diagnosis and treatment of leakage fault of 330 MW turbine generator stator bar
- Vol. 36, Issue 6, Pages: 79-81(2016)
- 作者机构：
  
  国网湖南省电力公司电力科学研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM311
- Published：2016
- 稿件说明：
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[1]任章鳌,由凯,郝剑波,闫迎,晏桂林,徐波.330MW汽轮发电机定子线棒漏水故障诊断及处理[J].湖南电力,2016,36(06):79-81.

REN Zhang’ao, YOU Kai, HAO Jianbo, et al. Diagnosis and treatment of leakage fault of 330 MW turbine generator stator bar[J]. 2016, 36(6): 79-81.
[1]任章鳌,由凯,郝剑波,闫迎,晏桂林,徐波.330MW汽轮发电机定子线棒漏水故障诊断及处理[J].湖南电力,2016,36(06):79-81. DOI：

REN Zhang’ao, YOU Kai, HAO Jianbo, et al. Diagnosis and treatment of leakage fault of 330 MW turbine generator stator bar[J]. 2016, 36(6): 79-81. DOI：

摘要

某电厂330 MW汽轮发电机在机组检修期间

通过直流耐压试验发现定子C相绕组泄漏电流超标

并且端部绝缘盒有漏水现象。通过进一步直流泄漏试验、表面电位试验以及定子线棒解体检查等方式逐一诊断

确定为发电机定子26槽下层线棒破损导致漏水。最后经过更换损毁线棒及检修工艺处理并进行相关修后试验

试验合格后成功投入运行。

Abstract

During the maintenance period of a 330 MW turbine generator in a power plant

it was found that the leakage current of the stator C phase winding had exceeded the standard

and the end insulation box was leaking. By further DC leakage test

surface potential test and the disintegration of the stator bar and other ways to diagnose one by one

the 26 slot of the generator stator bar damage caused by leakage is determined. At the end of the test

after replacing the damaged wire rod and the maintenance process

the test was carried out and the test was successful.

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