Fault Treatment on Slip-rings Heating and Electric Brush Spark of Generator Rotor

Guo Qilin

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Fault Treatment on Slip-rings Heating and Electric Brush Spark of Generator Rotor

更新时间：2025-11-18

- Fault Treatment on Slip-rings Heating and Electric Brush Spark of Generator Rotor
- Issue 6, (1994)
- 作者机构：
  
  新丰江水电厂
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM31
- Published：1994
- 稿件说明：
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[1]郭棋霖.发电机转子滑环发热和电刷冒火故障处理[J].四川电力技术,1994(06):36-39.

Guo Qilin. Fault Treatment on Slip-rings Heating and Electric Brush Spark of Generator Rotor[J]. 1994, (6).
[1]郭棋霖.发电机转子滑环发热和电刷冒火故障处理[J].四川电力技术,1994(06):36-39. DOI：

Guo Qilin. Fault Treatment on Slip-rings Heating and Electric Brush Spark of Generator Rotor[J]. 1994, (6). DOI：

摘要

广东新丰江水电厂－号机组的滑环发热．电刷冒火作多方面的探索和分析。最后该机组突然发生横差保护动作跳闸，说明发电机定子线圈存在不平衡电流。不平衡电流是由中性点铜铝过渡接头电腐蚀造成各相引出中性线的直流电阻差异大，使定于电流不平衡，而引起横差保护动作。由干不平衡电流负序分量的存在，在转子中产生不可忽视的偶次谐波，是造成转子滑环发热和电刷冒火的原因。在机组检修时。将三相中性点引线及中性点联线全部更换为新铜排，避兔铜铝过渡电腐蚀及接触不良，消除定于不平衡电流；换新滑环和刷架，完全消除滑环发热和电刷冒火的不正常现象．

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