<dd id="mimiw"><samp id="mimiw"></samp></dd>

<address id="mimiw"><nav id="mimiw"><delect id="mimiw"></delect></nav></address>

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

    Article retrieval

    文章檢索

    首頁 >> 文章檢索 >> 往年索引

    基于局放定位的變壓器鐵芯多點接地故障診斷分析

    來源:電工電氣發(fā)布時間:2022-01-20 11:20 瀏覽次數(shù):574

    基于局放定位的變壓器鐵芯多點接地故障診斷分析

    邱煒,高竣,劉鑫,劉彥琴,楊紅權(quán),周波,郭超,程鵬,林岑
    (國網(wǎng)四川省電力公司成都供電公司, 四川 成都 610041)
     
        摘 要:針對某 110 kV 主變在運行中發(fā)現(xiàn)絕緣油中乙炔及總烴含量超標的問題,通過特高頻、超聲波等帶電檢測手段對主變內(nèi)部缺陷進行分析和定位,并采用基于特高頻局放信號的平分面法精確找到了放電缺陷的位置,通過對主變吊罩發(fā)現(xiàn)鐵芯存在間歇性多點接地,成功驗證了局放定位的準確性,經(jīng)過分析放電原因及過程,給出了處理此類問題的應(yīng)對建議。
        關(guān)鍵詞:主變;局放定位;鐵芯;多點接地;油色譜
        中圖分類號:TM407     文獻標識碼:A     文章編號:1007-3175(2022)01-0036-06
     
    Multi-Point Grounding Fault Diagnosis of the Transformer Iron Core
    Based on PD Positioning Method
     
    QIU Wei, GAO Jun, LIU Xin, LIU Yan-qin, YANG Hong-quan, ZHOU Bo, GUO Chao, CHENG Peng, LIN Cen
    (Chengdu Power Supply Company, State Grid Sichuan Electric Power Company, Chengdu 610041, China)
     
        Abstract: The acetylene and total hydrocarbon in the insulating oil exceed the criteria is a problem that exists in the operation of the 110 kV main transformer. This research used hot-line detection methods, such as ultra-high frequency (UHF) and ultrasonic waves, to analyze and locate the defects of the main transformer. It employed the bisection plane based on ultra-high frequency partial discharge signal to find the location of the discharge defect as well.The article also found the intermittent multi-point grounding of the iron core through the main transformer hanging cover and successfully verified the accuracy of the partial discharge positioning. It proposes suggestions to manage these problems after analyzing the cause and process of the discharge.
        Key words: main transformer; PD positioning; iron core; multi-point grounding; oil chromatography
     
    參考文獻
    [1] 周電波,王紅梅,程江榮,等. 變壓器局部放電多頻段聯(lián)合檢測技術(shù)試驗研究[J] . 高壓電器,2018,54(11) :170-175.
    [2] 郭志楠,韓洪剛,郭鐵,等. 一臺 220 kV 變壓器油色譜異常分析與處理[J] . 變壓器,2020,57(8) :64-66.
    [3] STONE G C.Partial discharge diagnostics and electricalequipment insulation condition assessment [J] . IEEE Transactions on Dielectrics and Electrical Insulation,2005,12(5) :891-904.
    [4] 李德軍,沈威,郭志強. GIS 局部放電常規(guī)檢測和超聲波檢測方法的應(yīng)用比較[J] . 高壓電器,2009,45(3) :99-103.
    [5] 劉宏亮,丁斌,高樹國,等. 基于寬頻帶脈沖電流法的變壓器局部放電多端檢測技術(shù)研究[J] . 高壓電器,2018,54(11) :233-238.
    [6] 汪一雄,方毅平,董卓,等. 變壓器鐵芯夾件多點接地故障分析處理[J] . 湖南電力,2016,36(3) :69-72.
    [7] 王克峰,孫慶生,江和順,等. 一起 500 kV 變壓器穩(wěn)釘懸浮放電故障的診斷與分析[J] . 高壓電器,2012,48(3) :95-98.
    [8] 楊春,孟麗坤,徐佩,等. 一起 500 kV 變壓器局部過熱故障分析[J]. 變壓器,2021,58(2) :82-84.
    [9] 羅旖旎,黃超. 變壓器繞組的局部放電定位研究[J]. 變壓器,2009,46(3) :43-46.
    [10] 劉彥琴,劉君,周波,等. 聲電聯(lián)合法在主變局放缺陷定位中的現(xiàn)場應(yīng)用[J] . 高壓電器,2018,54(11) :239-244.
    [11] 葛為民. 變壓器局部放電超聲定位的現(xiàn)場應(yīng)用[J].高壓電器,2005,41(5) :351-353.
    [12] 王國利,郝艷捧,李彥明. 電力變壓器局部放電定位方法的現(xiàn)狀和前景[J]. 變壓器,2001,38(11) :22-27.

     

    亚洲无码av成人在线,亚洲影院AV无码一区二区,亚洲无码第二页,成人无码AV网站在线观看不卡 (function(){ var bp = document.createElement('script'); var curProtocol = window.location.protocol.split(':')[0]; if (curProtocol === 'https') { bp.src = 'https://zz.bdstatic.com/linksubmit/push.js'; } else { bp.src = 'http://push.zhanzhang.baidu.com/push.js'; } var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(bp, s); })();