华电技术 ›› 2011, Vol. 33 ›› Issue (4): 1-4.

• 专题综述 •    下一篇

汽轮发电机局部放电在线监测技术的应用

贾涵,单明   

  1. 华电滕州新源热电有限公司,山东 滕州 277500
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-04-25 发布日期:2011-04-25

Application of partial discharge online monitoring technology for steam turbine generator

JIA Han, SHAN Ming   

  1. Huadian Tengzhou Xinyuan Thermal Power Corporation Limited, Tengzhou 277500, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-04-25 Published:2011-04-25

摘要: 介绍了大型发电机局部放电信号的分类、特性及PDA监测法在定子绝缘监测方面的应用。定性分析了局部放电在线监测系统中电容耦合单元及频率响应对监测系统性能的影响。通过华电滕州新源热电有限公司150 MW #2发电机局部放电在线监测,进行分析和诊断,能正确判断发电机绝缘存在的问题,可为公司有计划安排、实施维护方案提供依据。

关键词: 大型发电机, 绝缘, 局部放电, 在线监测

Abstract: The classification and characteristics of partial discharge signal of high rating generator, and the application of PDA monitoring method in stator insulation monitoring were introduced.The influence of the capacitor coupling unit in the partial discharge online monitoring system and its frequency response on performance of monitoring system was analyzed qualitatively. The application of PDA technology in partial discharge online monitoring of 150 MW No.2 generator of Huadian Tengzhou Xinyuan Thermal Power Company Limited shows that this technology can analyze and diagnose, and can correctly judge the problem existing in generator insulation to give evidence for company to arrange and implement the maintenance plan.

Key words: high-rating generator, insulation, partial discharge, on-line monitoring