GZFZ-G系(xi)列GIS局(ju)部(bu)(bu)放電(dian)(dian)(dian)(dian)檢測(ce)教研裝置技術說明，一、概述(shu)在(zai)GIS制造、裝配、運(yun)輸(shu)以(yi)及(ji)運(yun)行過程(cheng)中，由(you)于加工不(bu)良(liang)、碰(peng)撞(zhuang)、沖(chong)擊、分(fen)合(he)操作等因素，其內部(bu)(bu)會產生絕(jue)緣缺(que)陷。在(zai)試驗(yan)電(dian)(dian)(dian)(dian)壓(ya)或額定電(dian)(dian)(dian)(dian)壓(ya)作用下，當(dang)絕(jue)緣缺(que)陷處集中的電(dian)(dian)(dian)(dian)場強度達到該區(qu)域的擊穿場強時(shi)，就(jiu)會出現局(ju)部(bu)(bu)放電(dian)(dian)(dian)(dian)（Partialdischarge,PD）現象。局(ju)部(bu)(bu)放電(dian)(dian)(dian)(dian)是GIS絕(jue)緣劣化的主要原因，也是GIS絕(jue)緣故(gu)障的先(xian)兆。因此，在(zai)線監測(ce)局(ju)部(bu)(bu)放電(dian)(dian)(dian)(dian)信(xin)號可在(zai)故(gu)障前(qian)檢測(ce)出絕(jue)緣缺(que)陷，是確保GIS以(yi)及(ji)電(dian)(dian)(dian)(dian)力系(xi)統安全穩定運(yun)行的重要手段。局(ju)部(bu)(bu)放電(dian)(dian)(dian)(dian)有哪些(xie)危(wei)害？高壓(ya)局(ju)部(bu)(bu)放電(dian)(dian)(dian)(dian)故(gu)障排查(cha)

局(ju)部(bu)放(fang)電(dian)(dian)(dian)電(dian)(dian)(dian)流當局(ju)部(bu)放(fang)電(dian)(dian)(dian)活動開始時(shi)(shi)，會(hui)出現持(chi)續時(shi)(shi)間(jian)在納秒到微(wei)秒之間(jian)的(de)(de)高頻電(dian)(dian)(dian)流瞬(shun)態脈沖，這(zhe)(zhe)些脈沖將以(yi)重復的(de)(de)方(fang)式(shi)重新(xin)出現。局(ju)部(bu)放(fang)電(dian)(dian)(dian)電(dian)(dian)(dian)流的(de)(de)幅(fu)度和持(chi)續時(shi)(shi)間(jian)都(dou)很(hen)(hen)小，因(yin)此很(hen)(hen)難測(ce)量(liang)(liang)。該事件(jian)可(ke)(ke)以(yi)通(tong)過(guo)(guo)被(bei)測(ce)設(she)備汲取的(de)(de)電(dian)(dian)(dian)流的(de)(de)微(wei)小變化(hua)來檢測(ce)。另(ling)一種測(ce)量(liang)(liang)這(zhe)(zhe)些電(dian)(dian)(dian)流的(de)(de)方(fang)法(fa)是(shi)在被(bei)測(ce)設(she)備上串聯一個(ge)電(dian)(dian)(dian)阻，并用示波器分(fen)析電(dian)(dian)(dian)壓(ya)降。視(shi)在電(dian)(dian)(dian)力負荷(he)局(ju)部(bu)放(fang)電(dian)(dian)(dian)期間(jian)發(fa)生的(de)(de)實際(ji)電(dian)(dian)(dian)荷(he)變化(hua)無法(fa)直接測(ce)量(liang)(liang)。使用了表觀電(dian)(dian)(dian)荷(he)的(de)(de)概念(nian)。PD事件(jian)的(de)(de)視(shi)在負載(q)不**設(she)備的(de)(de)實際(ji)負載，而是(shi)**負載的(de)(de)變化(hua)，如果連接在被(bei)測(ce)設(she)備的(de)(de)端子之間(jian)，則(ze)會(hui)導(dao)致(zhi)與PD事件(jian)等(deng)效的(de)(de)電(dian)(dian)(dian)壓(ya)變化(hua)。在數學上，它可(ke)(ke)以(yi)通(tong)過(guo)(guo)等(deng)式(shi)建模(mo)：視(shi)在電(dian)(dian)(dian)荷(he)通(tong)常以(yi)皮庫侖(pC)為單位(wei)測(ce)量(liang)(liang)。高壓(ya)開關柜局(ju)部(bu)放(fang)電(dian)(dian)(dian)怎(zen)么監測(ce)我(wo)們如何檢測(ce)變壓(ya)器局(ju)部(bu)放(fang)電(dian)(dian)(dian)？

杭州國洲電(dian)(dian)(dian)(dian)力科技有(you)限(xian)公(gong)司(si)專注(zhu)于(yu)綜合能源服(fu)(fu)務中(zhong)的(de)設備(bei)監(jian)測、狀態診斷和(he)數據(ju)分(fen)析(xi)技術(shu)，在(zai)成立之初就在(zai)研(yan)發(fa)(fa)部(bu)**組建了(le)專注(zhu)于(yu)局部(bu)放電(dian)(dian)(dian)(dian)監(jian)測技術(shu)研(yan)發(fa)(fa)的(de)技術(shu)中(zhong)心，借(jie)鑒和(he)升(sheng)級國際先(xian)(xian)進技術(shu)（Techimp、普睿司(si)曼、歐米克朗等），在(zai)國內成功(gong)(gong)研(yan)發(fa)(fa)出公(gong)司(si)自主知識(shi)產(chan)權的(de)、先(xian)(xian)進的(de)局部(bu)放電(dian)(dian)(dian)(dian)監(jian)測技術(shu)，憑借(jie)我公(gong)司(si)前沿的(de)軟硬件(jian)技術(shu)與(yu)先(xian)(xian)進的(de)監(jian)測方法，為(wei)客(ke)戶(hu)提(ti)供了(le)質量的(de)技術(shu)解決方案(an)。GZPD-04型（13年(nian)(nian)至今已(yi)是(shi)第三代(dai)）是(shi)我公(gong)司(si)結合多(duo)年(nian)(nian)局部(bu)放電(dian)(dian)(dian)(dian)監(jian)測技術(shu)研(yan)發(fa)(fa)及(ji)(ji)工程技術(shu)服(fu)(fu)務的(de)豐富經(jing)驗(yan)、吸(xi)取(qu)(qu)GZPD-234/3便攜式診斷型及(ji)(ji)國內外類似(si)產(chan)品的(de)技術(shu)亮點(dian)和(he)用戶(hu)評價度而研(yan)制出的(de)分(fen)布式高(gao)壓(ya)電(dian)(dian)(dian)(dian)纜局部(bu)放電(dian)(dian)(dian)(dian)監(jian)測與(yu)評價系(xi)(xi)統(tong)。本系(xi)(xi)統(tong)集(ji)成高(gao)性能數據(ju)采集(ji)單元、云服(fu)(fu)務器、4G/5G傳輸、邊緣計算(suan)、分(fen)布式組網(wang)(wang)、TF-Map分(fen)組篩選、神(shen)經(jing)網(wang)(wang)絡(luo)、故障數據(ju)庫等先(xian)(xian)進技術(shu)理念，成功(gong)(gong)應用于(yu)高(gao)壓(ya)電(dian)(dian)(dian)(dian)纜耐壓(ya)試驗(yan)時同(tong)步開展局部(bu)放電(dian)(dian)(dian)(dian)監(jian)測及(ji)(ji)帶電(dian)(dian)(dian)(dian)狀態下短(duan)期或長期重(zhong)癥監(jian)護(hu)，并通過中(zhong)國電(dian)(dian)(dian)(dian)力科學研(yan)究院的(de)監(jian)測認(ren)證后取(qu)(qu)得了(le)報告(gao)證書。

隨著我(wo)國電(dian)(dian)力(li)工業(ye)的(de)(de)(de)發展，對(dui)(dui)電(dian)(dian)力(li)設(she)(she)備的(de)(de)(de)局(ju)(ju)部(bu)(bu)(bu)(bu)放(fang)電(dian)(dian)研(yan)究的(de)(de)(de)要(yao)求越(yue)來越(yue)高，也越(yue)來越(yue)精(jing)細和(he)量化。GZFZ-G系列GIS局(ju)(ju)部(bu)(bu)(bu)(bu)放(fang)電(dian)(dian)檢(jian)測(ce)(ce)(ce)教(jiao)(jiao)研(yan)裝(zhuang)置是(shi)(shi)我(wo)公司結(jie)合市場需(xu)求，在GIS試驗變壓器基礎上研(yan)制(zhi)而成的(de)(de)(de)用(yong)(yong)于局(ju)(ju)部(bu)(bu)(bu)(bu)放(fang)電(dian)(dian)檢(jian)測(ce)(ce)(ce)教(jiao)(jiao)學、科研(yan)的(de)(de)(de)模擬設(she)(she)備，可在實(shi)驗室內(nei)模擬GIS內(nei)部(bu)(bu)(bu)(bu)各種單(dan)一缺陷(xian)和(he)不(bu)(bu)同組(zu)合缺陷(xian)，獲(huo)得反映各種絕(jue)緣缺陷(xian)的(de)(de)(de)局(ju)(ju)部(bu)(bu)(bu)(bu)放(fang)電(dian)(dian)實(shi)驗數據，并(bing)可實(shi)現對(dui)(dui)GIS內(nei)絕(jue)緣缺陷(xian)的(de)(de)(de)局(ju)(ju)部(bu)(bu)(bu)(bu)放(fang)電(dian)(dian)模式識別(bie)。本(ben)裝(zhuang)置具有體積小(xiao)(xiao)、重量輕、不(bu)(bu)受氣(qi)候變化的(de)(de)(de)影響(xiang)、用(yong)(yong)戶使用(yong)(yong)方便、電(dian)(dian)暈極(ji)小(xiao)(xiao)等優點，是(shi)(shi)電(dian)(dian)力(li)系統局(ju)(ju)部(bu)(bu)(bu)(bu)放(fang)電(dian)(dian)試驗、教(jiao)(jiao)學、科研(yan)所必需(xu)的(de)(de)(de)設(she)(she)備，對(dui)(dui)開展局(ju)(ju)部(bu)(bu)(bu)(bu)放(fang)電(dian)(dian)的(de)(de)(de)帶(dai)電(dian)(dian)檢(jian)測(ce)(ce)(ce)技術研(yan)究、提高專業(ye)技術人(ren)員積累(lei)檢(jian)測(ce)(ce)(ce)經(jing)驗、掌握(wo)檢(jian)測(ce)(ce)(ce)技術具有十分重要(yao)的(de)(de)(de)現實(shi)意義。局(ju)(ju)放(fang)不(bu)(bu)達標的(de)(de)(de)危害(hai)有哪些(xie)？

本系統(tong)的定(ding)位(wei)(wei)：特(te)高(gao)頻(pin)定(ding)位(wei)(wei)采用峰值強弱比較(jiao)法，根據(ju)采集(ji)的脈沖信號的大(da)小實(shi)現(xian)放(fang)(fang)電(dian)(dian)的粗(cu)略(lve)定(ding)位(wei)(wei)；超聲(sheng)波定(ding)位(wei)(wei)采用了基(ji)于無(wu)線通訊的分布(bu)(bu)式(shi)超聲(sheng)波局(ju)部(bu)放(fang)(fang)電(dian)(dian)定(ding)位(wei)(wei)技術，無(wu)線傳(chuan)(chuan)感器可方(fang)便的固定(ding)安裝在GIS殼體表面，對(dui)試驗/運行(xing)狀態下的GIS進行(xing)監(jian)測(ce)(ce)(ce)，并對(dui)絕(jue)緣缺陷進行(xing)精確(que)定(ding)位(wei)(wei)。本系統(tong)是分布(bu)(bu)式(shi)結構，由多個無(wu)線傳(chuan)(chuan)輸的超聲(sheng)波監(jian)測(ce)(ce)(ce)單元(yuan)、特(te)高(gao)頻(pin)監(jian)測(ce)(ce)(ce)單元(yuan)及一臺上位(wei)(wei)機構成，各個無(wu)線傳(chuan)(chuan)輸的監(jian)測(ce)(ce)(ce)單元(yuan)負責(ze)采集(ji)局(ju)部(bu)放(fang)(fang)電(dian)(dian)產生的信號，然(ran)后再經同步處理，以無(wu)線通訊方(fang)式(shi)將測(ce)(ce)(ce)得(de)信號波形傳(chuan)(chuan)輸到上位(wei)(wei)機。上位(wei)(wei)機根據(ju)各個位(wei)(wei)置(zhi)的無(wu)線傳(chuan)(chuan)輸監(jian)測(ce)(ce)(ce)單元(yuan)所采集(ji)到的信號強弱和信號達到時間(jian)的差異(yi)，即(ji)可準確(que)地計算出(chu)放(fang)(fang)電(dian)(dian)部(bu)位(wei)(wei)。特(te)高(gao)壓振(zhen)動監(jian)測(ce)(ce)(ce)需(xu)要什(shen)么(me)條件？高(gao)壓開關(guan)柜(ju)局(ju)部(bu)放(fang)(fang)電(dian)(dian)監(jian)測(ce)(ce)(ce)品(pin)牌(pai)

同步(bu)局(ju)部放(fang)電對耐壓設備有要求(qiu)嗎？高壓局(ju)部放(fang)電故障排查

本(ben)(ben)系統可以通過脈沖信號頻率(lv)分布的相似度、脈沖波(bo)形(xing)特征、PRPD譜圖(tu)等(deng)對(dui)脈沖進行(xing)(xing)聚類(lei)分析，并可對(dui)聚類(lei)后的脈沖簇(cu)進行(xing)(xing)自動模式識(shi)別(bie)和放電(dian)(dian)源定(ding)位(wei)。7、多放電(dian)(dian)源的區(qu)分7.1如(ru)下圖(tu)所(suo)示，尖刺放電(dian)(dian)和內部放電(dian)(dian)同時(shi)(shi)發生(sheng)時(shi)(shi)，由于相位(wei)和幅值都有所(suo)區(qu)別(bie)，本(ben)(ben)系統可以很快速的在PRPD圖(tu)上直(zhi)接進行(xing)(xing)聚類(lei)區(qu)分，進而分別(bie)進行(xing)(xing)數(shu)據(ju)處理(li)。7.2 如(ru)下圖(tu)所(suo)示，干擾(rao)放電(dian)(dian)與(yu)懸浮放電(dian)(dian)同時(shi)(shi)發生(sheng)時(shi)(shi)，通過時(shi)(shi)域三維聚類(lei)圖(tu)可選中干擾(rao)放電(dian)(dian)并定(ding)位(wei)。定(ding)位(wei)誤差6cm（實際坐標應(ying)為-1.28米）。高壓局部放電(dian)(dian)故障排查

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