一起變壓器套管接頭發(fā)熱缺陷的分析及處理
曹小龍1，曹小虎2
（1 國網(wǎng)天水供電公司，甘肅 天水 741020；2 國網(wǎng)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(fā)熱缺陷引起的故障是變壓器的多發(fā)故障，介紹了一臺(tái)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(cè)試數(shù)據(jù)，確認(rèn)出缺陷部位。經(jīng)解體檢查找出發(fā)熱缺陷原因系定位螺母松動(dòng)所致，給出了缺陷處理方法，并提出防范此類缺陷再次發(fā)生的措施。
關(guān)鍵詞：變壓器套管；引線接頭；發(fā)熱；紅外測(cè)溫；直流電阻；將軍帽；防范措施
中圖分類號(hào)：TM41 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：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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