一起變壓器套管接頭發熱缺陷的分析及處理
曹小龍1，曹小虎2
（1 國網天水供電公司，甘肅 天水 741020；2 國網甘肅省電力公司檢修公司，甘肅 天水 741000）
摘 要：套管引線接頭發熱缺陷引起的故障是變壓器的多發故障，介紹了一臺變壓器高壓套管接頭過熱缺陷，通過分析紅外圖譜以及直流電阻測試數據，確認出缺陷部位。經解體檢查找出發熱缺陷原因系定位螺母松動所致，給出了缺陷處理方法，并提出防范此類缺陷再次發生的措施。
關鍵詞：變壓器套管；引線接頭；發熱；紅外測溫；直流電阻；將軍帽；防范措施
中圖分類號：TM41 文獻標識碼：A 文章編號：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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