GIS設(shè)備局部放電定位技術(shù)與現(xiàn)場(chǎng)應(yīng)用
劉磊,樸文泉,劉振國(guó),葛志杰,楊洋
(國(guó)網(wǎng)新疆電力公司電力科學(xué)研究院,新疆 烏魯木齊 830011)
摘 要:通過(guò)帶電檢測(cè)發(fā)現(xiàn)氣體絕緣金屬封閉開關(guān)設(shè)備(GIS)存在局部放電信號(hào)后,需對(duì)局放源進(jìn)行快速準(zhǔn)確定位,以判斷缺陷類型,制定檢修消缺方案。對(duì)GIS設(shè)備超聲波定位、特高頻定位、聲電聯(lián)合定位等方法進(jìn)行了分析,并例舉現(xiàn)場(chǎng)定位應(yīng)用案例,案例表明三種定位方法對(duì)GIS一般缺陷都有良好的定位效果。對(duì)于超聲波或特高頻難以定位的缺陷,可以采用聲電聯(lián)合定位法同時(shí)分析超聲波與特高頻信號(hào),實(shí)現(xiàn)缺陷準(zhǔn)確定位。
關(guān)鍵詞:氣體絕緣金屬封閉開關(guān)設(shè)備;定位;超聲波;特高頻;聲電聯(lián)合
中圖分類號(hào):TM643 文獻(xiàn)標(biāo)識(shí)碼:B 文章編號(hào):1007-3175(2018)01-0038-05
Partial Discharge Localization Technology and Field Application of Gas Insulated Switchgear Equipment
LIU Lei, PIAO Wen-quan, LIU Zhen-guo, GE Zhi-jie, YANG Yang
(State Grid Xinjiang Electric Power Research Institute, Urumqi 830011 , China)
Abstract: After the partial discharge (PD) signals in gas insulated switchgear (GIS) were detected, it is necessary to locate the PD sources quickly and accurately, so as to judge the types of defects and to formulate a solution for eliminating the defects. This paper analyzed the methods of ultrasonic localization, ultrahigh frequency (UHF) localization, and acoustoelectric union localization of GIS equipment and illustrated the application cases of field localization. The cases show that the three localization methods have good location effect on general defects in GIS. For the defect that ultrasonic or UHF localization method is difficult to locate, the acoustoelectric union localization method can be adopted to simultaneously analyze ultrasonic and UHF signals to realize the defect localization accurately.
Key words: gas insulated switchgear; localization; ultrasonic; ultrahigh frequency; acoustoelectric union
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