【摘要】 介绍了珠海发电厂2号发电机转子极II的8号线圈存在非金属性匝间短路故障的发现及分析过程。通过先进的检测方法和严谨的试验数据分析认为,造成线圈非金属性匝间短路故障原因为匝间绝缘线条直线与弧线部分交接处缝隙过大,有污物,致使绝缘降低。准确找到了故障点,进行了清洁吹扫、用绝缘垫条覆盖接缝等修复处理。解决了2号发电机存在的事故隐患,避免了机组在运行中突发事故的发生,保证了机组的连续安全经济运行。更多还原

【Abstract】 The process of foundation and analysis of nonmetal turn to turn short circuit of No.8 winding of rotor polar II of No.2 unit in Zhuhai power plant is introduced.Based on advanced check method and precise test data,the reason was found which is that the gap between the joint of beeline and curve part of insulation bar is too large and have dirt which lower the insulation quality.The fault point was cleaned and the gap was covered with insulation bar so that the potential accident of No.2 unit was solved which can avoid the sudden accident during the unit operation and guarantee the continuous security and economy operation of the unit.更多还原