間歇性局部放電引起高壓電抗器色譜異常分析
馬飛越,伍弘
(國(guó)網(wǎng)寧夏電力有限公司電力科學(xué)研究院,寧夏 銀川 750011)
摘 要:對(duì)一起750 kV高壓并聯(lián)電抗器油色譜異常缺陷進(jìn)行分析。通過(guò)長(zhǎng)時(shí)間色譜在線監(jiān)測(cè)與離線檢測(cè)分析,判斷電抗器中缺陷為間歇性局部放電。利用多手段局部放電聯(lián)合檢測(cè),準(zhǔn)確定位缺陷并根據(jù)其間歇性特點(diǎn)分析可能的放電原因。對(duì)該電抗器進(jìn)行吊罩檢查及實(shí)驗(yàn)室模擬試驗(yàn),驗(yàn)證了缺陷類(lèi)型、位置及原因。
關(guān)鍵詞:并聯(lián)電抗器;色譜;間歇性局放;高頻局放檢測(cè);特高頻
中圖分類(lèi)號(hào):TM47 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1007-3175(2018)05-0054-05
Analysis on Abnormal Oil Chromatography Caused by Intermittent Partial Discharge in High Voltage Shunt Reactor
MA Fei-yue, WU Hong
(Power Research Institute of State Grid Ningxia Electric Power Co., Ltd, Yinchuan 750011 , China)
Abstract: Analysis was made to the abnormal oil chromatography of a 750 kV high-voltage shunt reactor. By analyzing the long time online monitoring and off-line detection of the oil chromatography, it was judged that the defect in the reactor was intermittent partial discharge. Multiple methods were taken to detect the partial discharge to correctly locate the defect. According to the intermittent characteristics, this paper analyzed the possible causes of the discharge. The defect type, location and reason of the mentioned reactor were verified by the hoist checking and the laboratory simulation.
Key words: shunt reactor; chromatography; intermittent partial discharge; high frequency partial discharge detection; ultrahigh frequency
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