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      2. Suzhou Electric Appliance Research Institute
        期刊號: CN32-1800/TM| ISSN1007-3175

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        開關柜局部放電分析定位

        來源:電工電氣發布時間:2021-09-18 09:18 瀏覽次數:20

        開關柜局部放電分析定位

        魏彬,王欣,杜岳凡,王小朋,董政,閆立東,劉常軍
        (國網天津市電力公司檢修公司, 天津 300304)
         
            摘 要:受開關柜結構緊湊特點的制約,巡檢過程中對放電類型分析和放電位置確定存在一定困難。綜合利用特高頻法和高頻電流法對某 220 kV 變電站開關柜套管放電缺陷進行分析并定位,應用特高頻法發現開關柜放電信號后,結合特高頻時差法和高頻電流定位,分析確定放電原因并最終通過解體驗證了檢測結果,說明放電位置判斷正確。
            關鍵詞:開關柜;局部放電;特高頻法;高頻電流
            中圖分類號:TM591 ;TM855     文獻標識碼:B     文章編號:1007-3175(2021)09-0050-04
         
        Analysis and Location of Partial Discharge of Switchgear
         
        WEI Bin, WANG Xin, DU Yue-fan, WANG Xiao-peng, DONG Zheng, YAN Li-dong, LIU Chang-jun
        (State Grid Tianjin Electric Power Maintenance Company, Tianjin 300304, China)
         
            Abstract: Restricted by the compact structure of the switchgear, it is difficult to analyze the discharge type and determine the discharge location during the inspection process. In this paper, UHF method and high frequency current method are used to analyze and locate the discharge defects of the switchgear casing of a 220 kV substation. After finding discharge signals of switchgear through UHF, UHF and high frequency current method are combined to analyze the cause of discharge, and finally the testing results are verified by the disassembly, indicating the right judgment of the discharge location.
            Key words: switchgear; partial discharge; UHF method; high frequency current
         
        參考文獻
        [1] 鄧志祥,康琛,王華云,等.10 kV 開關柜穿屏套管的局部放電檢測與結構優化[J] . 電瓷避雷器,2019(2) :226-230.
        [2] 王鵬,劉玉婷,鄒陽,等. TEV 和超聲波檢測法在開關柜局部放電檢測中的應用評述[J] . 高壓電器,2020,56(10) :75-83.
        [3] 趙常威,丁國成,楊為,等. 基于開關柜缺陷模型的局放檢測方法對比研究[J] . 高壓電器,2019,55(3) :220-225.
        [4] 孫進, 梅凡, 陳月, 等. 聲電聯合檢測法在開關柜局部放電事故分析中的應用[J] . 電工技術,2020(24) :94-95.
        [5] 郭超,劉君,周波,等. 開關柜帶電檢測應用分析與解體實例[J]. 電工電氣,2019(10) :42-46.
        [6] 李建明.35 kV 開關柜穿柜套管故障原因分析[J] .電力安全技術,2021,23(1) :37-38.

         

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