一起变压器套管接头发热缺陷的分析及处理
曹小龙1，曹小虎2
（1 国网天水供电公司，甘肃 天水 741020；2 国网甘肃省电力公司检修公司，甘肃 天水 741000）
摘 要：套管引线接头发热缺陷引起的故障是变压器的多发故障，介绍了一台变压器高压套管接头过热缺陷，通过分析红外图谱以及直流电阻测试数据，确认出缺陷部位。经解体检查找出发热缺陷原因系定位螺母松动所致，给出了缺陷处理方法，并提出防范此类缺陷再次发生的措施。
关键词：变压器套管；引线接头；发热；红外测温；直流电阻；将军帽；防范措施
中图分类号：TM41 文献标识码：A 文章编号：1007-3175(2016)07-0023-04
Analysis and Treatment for Generate Heat Defect of
Transformer Casing Pipe Connector
CAO Xiao-long1, CAO Xiao-hu2
（1 Tianshui Electric Power Supply Company of State Grid, Tianshui 741020, China;
2 Gansu Power Grid Maintenance Overhaul Company of State Grid, Tianshui 741000, China）
Abstract: The fault caused by the generate heat defect of casing pipe lead connector happens frequently in transformers. Introduction was made to the overheating defect of transformer high-voltage casing pipe connector. The defect location was determined by analyzing infrared spectrogram and direct current resistance test data. After strip inspection, it is found that the generate heat defect is caused by the tottering setscrew nut. This paper gave the defect treatment methods and raised counter measures to keep away this type of defects happening again.
Key words: transformer casing pipe; lead connector; generate heat; infrared temperature measurement; direct current resistance; general cap; counter measures
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