高壓開(kāi)關(guān)柜局放檢測(cè)技術(shù)的現(xiàn)場(chǎng)應(yīng)用
張顯龍,李通
(廣東電網(wǎng)有限責(zé)任公司東莞供電局,廣東 東莞 523000)
摘 要:高壓開(kāi)關(guān)柜對(duì)其開(kāi)展局放檢測(cè),及早發(fā)現(xiàn)絕緣缺陷,意義重大。介紹了暫態(tài)對(duì)地電壓(TEV)及超聲波(AE)檢測(cè)方法,結(jié)合現(xiàn)場(chǎng)經(jīng)驗(yàn),從聲電結(jié)合、趨勢(shì)分析等方面總結(jié)了這兩種方法在現(xiàn)場(chǎng)的應(yīng)用;分析了開(kāi)關(guān)柜產(chǎn)生局部放電的原因,給出了廣東電網(wǎng)某10 kV開(kāi)關(guān)柜的局放案例分析,案例表明基于TEV和AE原理的檢測(cè)技術(shù)在現(xiàn)場(chǎng)的應(yīng)用效果較好,為后續(xù)的現(xiàn)場(chǎng)檢測(cè)工作提供參考。
關(guān)鍵詞:開(kāi)關(guān)柜;局放;暫態(tài)對(duì)地電壓;超聲波;檢測(cè)
中圖分類(lèi)號(hào):TM591 文獻(xiàn)標(biāo)識(shí)碼:B 文章編號(hào):1007-3175(2018)05-0059-05
Field Application of Detection Technology for High Voltage Switchgear
ZHANG Xian-long, LI Tong
(Dongguan Power Supply Bureau, Guangdong Power Grid Co., Ltd, Dongguan 523000, China)
Abstract: it is very important for high voltage switchgears to carry out partial discharge test so as to find the insulation defects early. Introduction was made to the transient earth voltage(TEV) and acoustic emission(AE) detection methods. Combining with the field experience, this paper summarized the application of two methods from the aspects of the combination of sound and electricity and trend analysis, and analyzed the reasons for the partial discharge of the switchgear, giving the case analysis of 10 kV switchgear partial discharge in certain Guangdong power grid. The case shows that the detection technology based on TEV and AE principles has good application effect on the field, which provides important references for subsequent field detection.
Key words: switchgear; partial discharge; transient earth voltage; acoustic emission; detection
參考文獻(xiàn)
[1] 楊凱,張認(rèn)成,楊建紅,等. 基于頻率約束獨(dú)立分量分析的開(kāi)關(guān)柜局部放電故障識(shí)別[J]. 高電壓技術(shù),2014,40(11):3452-3460.
[2] 潘長(zhǎng)明,劉剛,熊炬,等. 高壓開(kāi)關(guān)柜絕緣事故的分析及防范措施[J]. 高壓電器,2011,47(7):90-93.
[3] 陳俊,王勇,黃慧紅,等. 基于多維度診斷技術(shù)的10 kV開(kāi)關(guān)柜局放帶電檢測(cè)應(yīng)用研究[J]. 供用電,2016,33(2):64-68.
[4] 劉云鵬,王會(huì)斌,王娟,等. 高壓開(kāi)關(guān)柜局部放電UHF在線監(jiān)測(cè)系統(tǒng)的研究[J]. 高壓電器,2009,45(1):15-17.
[5] 章濤,王俊波,李國(guó)偉.10 kV開(kāi)關(guān)柜局部放電檢測(cè)技術(shù)研究與運(yùn)用[J]. 高壓電器,2012,48(10):100-104.
[6] 曾雄杰,江健武,侯俊.TEV和UHF在10 kV開(kāi)關(guān)柜帶電檢測(cè)中的應(yīng)用[J]. 高壓電器,2012,48(1):41-47.
[7] 任明,彭華東,陳曉清,等. 采用暫態(tài)對(duì)地電壓法綜合檢測(cè)開(kāi)關(guān)柜局部放電[J]. 高電壓技術(shù),2010,36(10):2460-2466.
[8] 徐焰. 開(kāi)關(guān)柜局部放電暫態(tài)對(duì)地電壓檢測(cè)技術(shù)[J].供用電,2011,28(1):62-64.
[9] 陳慶祺,張偉平,劉勤鋒,等. 開(kāi)關(guān)柜局部放電暫態(tài)對(duì)地電壓的分布特性研究[J]. 高壓電器,2012,48(10):88-93.
[10] 陳俊,顧樂(lè),王波. 開(kāi)關(guān)柜局部放電的AE和TEV聯(lián)合檢測(cè)系統(tǒng)研究[J]. 高壓電器,2016,52(1):124-128.
[11] 周玲. 基于超聲波信號(hào)的局部放電故障識(shí)別算法研究[D]. 廣州:華南理工大學(xué),2013.
[12] 龐驍剛. 開(kāi)關(guān)柜局部放電原因分析與處理[J]. 云南電力技術(shù),2011,39(4):56-57.