GIS設備局部放電定位技術與現場應用
劉磊,樸文泉,劉振國,葛志杰,楊洋
(國網新疆電力公司電力科學研究院,新疆 烏魯木齊 830011)
摘 要:通過帶電檢測發現氣體絕緣金屬封閉開關設備(GIS)存在局部放電信號后,需對局放源進行快速準確定位,以判斷缺陷類型,制定檢修消缺方案。對GIS設備超聲波定位、特高頻定位、聲電聯合定位等方法進行了分析,并例舉現場定位應用案例,案例表明三種定位方法對GIS一般缺陷都有良好的定位效果。對于超聲波或特高頻難以定位的缺陷,可以采用聲電聯合定位法同時分析超聲波與特高頻信號,實現缺陷準確定位。
關鍵詞:氣體絕緣金屬封閉開關設備;定位;超聲波;特高頻;聲電聯合
中圖分類號:TM643 文獻標識碼:B 文章編號: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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