GIS交流耐壓試驗中絕緣缺陷的高效發現
嚴鵬志，黃烜城，劉全，趙凱強
江蘇方天電力技術有限公司，江蘇 南京 211102
摘 要：介紹了國家電網公司對氣體絕緣開關設備(GIS) 類設備交流耐壓的相關標準，比較了兩種輔助檢測方法特高頻法(UHF) 和超聲波法(AE) 的差異及對同類信號源的檢測效果。針對兩起耐壓試驗擊穿事件，對試驗中絕緣缺陷發現的過程進行分析，結果表明從嚴執行標準對交接耐壓試驗中高效發現設備絕緣隱患具有重要作用，綜合運用UHF 和AE 檢測法，實現兩者的優勢互補，可排除干擾因素對判讀信號的影響。
關鍵詞：：氣體絕緣開關設備；交流耐壓試驗；絕緣缺陷
中圖分類號：TM855 文獻標識碼：B 文章編號：1007-3175(2015)12-0033-03
Efficient Found of Insulation Defect in Alternating Current Withstand Voltage Test of Gas Insulated Switchgear
YAN Peng-zhi, HUANG Xuan-cheng, LIU Quan, ZHAO Kai-qiang
Jiangsu Frontier Electric Technology Co., Ltd, Nanjing 211102, China
Abstract: Introduction was made to the corresponding standard of alternating current withstand voltage test of gas insulated switchgear (GIS) type in state grid corporation of China. This paper compared the differences of two kinds of auxiliary detection methods, ultrahigh frequency (UHF) and ultrasonic (AE) and the detection effect of similar signal sources. Aiming at the two breakdown events of withstand voltage tests, this paper analyzed the process of insulation defect discovery in test. The results show that the seriously executive standard plays an important role in finding the hidden dangers of equipment insulation for alternating current withstand voltage tests. The comprehensive application of UHF and AE detection methods could compensate each other's advantages, suppressing the impacts of interference factors on identification signals.
Key words: gas insulated switchgear; alternating current withstand voltage test; insulation defect
參考文獻
[1] 張顯友，陳偉. 高壓電器用耐SF6新型絕緣材料的研究進展[J]. 絕緣材料通訊，2000(2)：21-24.
[2] 李潤春，王露鋼，刁志昆.GIS 組合電器的安裝工藝和關鍵控制要點[J]. 電力建設，2010，31(1)：37-39.
[3] 沈其工，方瑜，周澤存，王大忠. 高電壓技術[M].4版. 北京：中國電力出版社，2013.
[4] 吳張建，李成榕，齊波，郝震，耿弼博. GIS局部放電檢測中特高頻法與超聲波法靈敏度的對比研究[J]. 現代電力，2010，27(3)：31-36.
[5] 李德軍，沈威，郭志強. GIS局部放電常規檢測和超聲波檢測方法的應用比較[J]. 高壓器，2009，45(3)：99-103.
