GIS交流耐壓試驗中絕緣缺陷的高效發(fā)現(xiàn)
嚴(yán)鵬志，黃烜城，劉全，趙凱強
江蘇方天電力技術(shù)有限公司，江蘇 南京 211102
摘 要：介紹了國家電網(wǎng)公司對氣體絕緣開關(guān)設(shè)備(GIS) 類設(shè)備交流耐壓的相關(guān)標(biāo)準(zhǔn)，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(fā)現(xiàn)的過程進(jìn)行分析，結(jié)果表明從嚴(yán)執(zhí)行標(biāo)準(zhǔn)對交接耐壓試驗中高效發(fā)現(xiàn)設(shè)備絕緣隱患具有重要作用，綜合運用UHF 和AE 檢測法，實現(xiàn)兩者的優(yōu)勢互補，可排除干擾因素對判讀信號的影響。
關(guān)鍵詞：：氣體絕緣開關(guān)設(shè)備；交流耐壓試驗；絕緣缺陷
中圖分類號：TM855 文獻(xiàn)標(biāo)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
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