進人21世紀電(dian)(dian)(dian)力(li)(li)行(xing)業將有更大(da)的發展(zhan)，電(dian)(dian)(dian)力(li)(li)系(xi)統配(pei)電(dian)(dian)(dian)變(bian)壓(ya)器(qi)的故障診斷與狀態檢修應是(shi)電(dian)(dian)(dian)力(li)(li)生產中努力(li)(li)和發展(zhan)的方向。因(yin)此，綜上所述要使電(dian)(dian)(dian)力(li)(li)系(xi)統配(pei)電(dian)(dian)(dian)變(bian)壓(ya)器(qi)保(bao)持長期安(an)全可靠運(yun)行(xing)，除加(jia)強提高電(dian)(dian)(dian)力(li)(li)系(xi)統配(pei)電(dian)(dian)(dian)變(bian)壓(ya)器(qi)保(bao)護配(pei)置技術水平之外，在電(dian)(dian)(dian)力(li)(li)系(xi)統配(pei)電(dian)(dian)(dian)變(bian)壓(ya)器(qi)日(ri)常的運(yun)行(xing)管理方面同樣也十分(fen)重要

配(pei)(pei)(pei)電(dian)變(bian)壓(ya)(ya)器運行(xing)(xing)是否正常(chang)(chang)直接影響用(yong)(yong)戶(hu)生產和(he)生活用(yong)(yong)電(dian)，并關系到(dao)用(yong)(yong)電(dian)設備的安(an)全。為(wei)了保證(zheng)用(yong)(yong)戶(hu)用(yong)(yong)上優質(zhi)、安(an)全電(dian)，必須保證(zheng)配(pei)(pei)(pei)變(bian)運行(xing)(xing)正常(chang)(chang)。配(pei)(pei)(pei)電(dian)變(bian)壓(ya)(ya)器是電(dian)網(wang)系統中根(gen)據電(dian)磁(ci)感應定(ding)律變(bian)換交(jiao)流(liu)電(dian)壓(ya)(ya)和(he)電(dian)流(liu)而傳輸(shu)交(jiao)流(liu)電(dian)能的一種靜止(zhi)電(dian)器。通常(chang)(chang)安(an)裝(zhuang)在(zai)電(dian)線桿、臺架或配(pei)(pei)(pei)電(dian)所中，一般將6～10千(qian)伏(fu)電(dian)壓(ya)(ya)降至400伏(fu)左右(you)輸(shu)入(ru)用(yong)(yong)戶(hu)。因此我們有必要從保護配(pei)(pei)(pei)置技(ji)術角度和(he)日常(chang)(chang)運行(xing)(xing)管理兩大方面來談談配(pei)(pei)(pei)電(dian)變(bian)壓(ya)(ya)器日常(chang)(chang)運行(xing)(xing)管理及保護配(pei)(pei)(pei)置技(ji)術：

一、日(ri)常運(yun)行管(guan)理方面(mian)

1、加強(qiang)日常(chang)巡視、維護和定期測試：

（1）進行日(ri)常維(wei)護保養，及(ji)時(shi)清掃(sao)和擦(ca)除配變(bian)油污和高低壓套(tao)管上的塵埃(ai)，以防氣候潮濕或陰雨(yu)時(shi)污閃放電，造成(cheng)套(tao)管相間短路，高壓熔斷器(qi)熔斷，配變(bian)不(bu)能(neng)正常運行；

（2）及時觀(guan)察配(pei)變(bian)的(de)油(you)(you)(you)位和油(you)(you)(you)色，定(ding)期檢測油(you)(you)(you)溫(wen)，特(te)別是負荷變(bian)化(hua)大、溫(wen)差大、氣候惡劣(lie)的(de)天氣應增(zeng)加巡視(shi)次(ci)數，對油(you)(you)(you)浸式的(de)配(pei)電變(bian)壓器(qi)運行(xing)中的(de)頂層油(you)(you)(you)溫(wen)不得高于95℃，溫(wen)升不得超過(guo)(guo)55℃，為(wei)防止繞組和油(you)(you)(you)的(de)劣(lie)化(hua)過(guo)(guo)速(su)，頂層油(you)(you)(you)的(de)溫(wen)升不宜經(jing)常超過(guo)(guo)45℃；

（3）搖(yao)測(ce)配變的絕緣電阻，檢查各引線是否牢固，特別要(yao)注意的是低壓出線連接處接觸是否良(liang)好、溫度是否異常(chang)；

（4）加強(qiang)用(yong)電(dian)(dian)負(fu)荷的(de)(de)(de)測(ce)量(liang)，在用(yong)電(dian)(dian)高峰期，加強(qiang)對(dui)每臺配(pei)(pei)變(bian)的(de)(de)(de)負(fu)荷測(ce)量(liang)，必要時(shi)增加測(ce)量(liang)次數，對(dui)三(san)相電(dian)(dian)流不(bu)平(ping)衡(heng)的(de)(de)(de)配(pei)(pei)電(dian)(dian)變(bian)壓器及時(shi)進行調整，防止(zhi)中(zhong)性(xing)線電(dian)(dian)流過大(da)燒斷引線，造(zao)成用(yong)戶(hu)設備損壞，配(pei)(pei)變(bian)受損。聯(lian)接組別為(wei)Yyn0的(de)(de)(de)配(pei)(pei)變(bian)，三(san)相負(fu)荷應盡量(liang)平(ping)衡(heng)，不(bu)得僅(jin)用(yong)一(yi)相或兩相供電(dian)(dian)，中(zhong)性(xing)線電(dian)(dian)流不(bu)應超過低壓側(ce)額定(ding)電(dian)(dian)流的(de)(de)(de)25%，力(li)求使配(pei)(pei)變(bian)不(bu)超載(zai)、不(bu)偏載(zai)運行；

2、防(fang)止外力(li)破壞：

（1）合理選擇配變(bian)的(de)(de)安裝(zhuang)地點(dian)，配變(bian)安裝(zhuang)既要滿足用戶電(dian)壓的(de)(de)要求，又要盡量(liang)避免將(jiang)其安裝(zhuang)在(zai)荒山野嶺，易(yi)被雷擊，也(ye)不(bu)能安裝(zhuang)在(zai)遠離居(ju)民區的(de)(de)地方，以防不(bu)法分子偷盜。安裝(zhuang)位(wei)置太偏僻也(ye)不(bu)利于運行人(ren)員的(de)(de)定期維(wei)護，不(bu)便于工作人(ren)員的(de)(de)管理；

（2）避(bi)免(mian)在配電(dian)變(bian)壓(ya)器上安裝低壓(ya)計量(liang)箱(xiang)，因長時間(jian)運行，計量(liang)箱(xiang)玻璃(li)損(sun)(sun)壞(huai)(huai)或配變(bian)低壓(ya)樁頭(tou)損(sun)(sun)壞(huai)(huai)不(bu)能及時進(jin)行更換，致(zhi)使因雨水等原因燒壞(huai)(huai)電(dian)能表引起配變(bian)受損(sun)(sun)；

（3）不允許私自調節分接開(kai)關(guan)(guan)，以防(fang)分接開(kai)關(guan)(guan)調節不到位(wei)發生相間(jian)短路致使燒壞配電變壓器(qi)；

（4）在配(pei)變(bian)(bian)高(gao)低(di)壓端加裝(zhuang)絕(jue)(jue)緣(yuan)罩(zhao)，防(fang)止(zhi)自(zi)然災害和外物破壞(huai)，在道路(lu)狹窄的小區和動物出入頻繁的森林區加裝(zhuang)高(gao)低(di)壓絕(jue)(jue)緣(yuan)罩(zhao)，防(fang)止(zhi)配(pei)電變(bian)(bian)壓器接線(xian)樁上掉東西(xi)使低(di)壓短路(lu)而燒毀(hui)配(pei)變(bian)(bian)；

（5）定期巡視線路，砍伐(fa)線路通道，防止樹(shu)枝碰在導線上引起低(di)壓(ya)(ya)短(duan)路燒壞配(pei)電變壓(ya)(ya)器的事故。

二、保(bao)護(hu)配置技(ji)術方面

1、裝(zhuang)設避(bi)雷(lei)器(qi)(qi)(qi)保(bao)護,防止(zhi)雷(lei)擊過(guo)(guo)電(dian)壓(ya)(ya)(ya)：配(pei)變(bian)(bian)的(de)(de)(de)(de)防雷(lei)保(bao)護，采(cai)用(yong)裝(zhuang)設無間隙金屬氧化物避(bi)雷(lei)器(qi)(qi)(qi)作為(wei)過(guo)(guo)電(dian)壓(ya)(ya)(ya)保(bao)護，以防止(zhi)由(you)高(gao)低(di)壓(ya)(ya)(ya)線路侵入(ru)的(de)(de)(de)(de)高(gao)壓(ya)(ya)(ya)雷(lei)電(dian)波(bo)所引(yin)起(qi)的(de)(de)(de)(de)變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)內(nei)部(bu)絕緣擊穿，造成短路，杜(du)絕發生雷(lei)擊破壞事故。采(cai)用(yong)避(bi)雷(lei)器(qi)(qi)(qi)保(bao)護配(pei)變(bian)(bian)時(shi)，一是(shi)要(yao)(yao)(yao)通(tong)過(guo)(guo)正常渠道采(cai)購合格產(chan)品，安(an)(an)裝(zhuang)投(tou)運(yun)前(qian)經過(guo)(guo)嚴格的(de)(de)(de)(de)試(shi)驗(yan)達到運(yun)行要(yao)(yao)(yao)求再投(tou)運(yun)；二是(shi)對運(yun)行中的(de)(de)(de)(de)設備定期(qi)進行預防性試(shi)驗(yan)，對于(yu)泄漏電(dian)流值超過(guo)(guo)標(biao)準值的(de)(de)(de)(de)不合格產(chan)品及(ji)(ji)(ji)時(shi)加(jia)以更換；三是(shi)定期(qi)進行變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)接(jie)地(di)(di)(di)(di)電(dian)阻(zu)檢測(ce)(ce)，對100KVA及(ji)(ji)(ji)以上的(de)(de)(de)(de)配(pei)電(dian)變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)要(yao)(yao)(yao)求接(jie)地(di)(di)(di)(di)電(dian)阻(zu)必須(xu)(xu)在(zai)(zai)4Ω以內(nei)，對100KVA以下的(de)(de)(de)(de)配(pei)電(dian)變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)，要(yao)(yao)(yao)求接(jie)地(di)(di)(di)(di)電(dian)阻(zu)必須(xu)(xu)在(zai)(zai)10Ω以內(nei)。如(ru)果測(ce)(ce)試(shi)值不在(zai)(zai)規(gui)(gui)定范(fan)(fan)圍內(nei)，應采(cai)取延伸(shen)接(jie)地(di)(di)(di)(di)線，增(zeng)加(jia)接(jie)地(di)(di)(di)(di)體及(ji)(ji)(ji)物理、化學等(deng)措(cuo)施使其達到規(gui)(gui)定值，每年(nian)的(de)(de)(de)(de)4月份(fen)(fen)和7月份(fen)(fen)進行兩次接(jie)地(di)(di)(di)(di)電(dian)阻(zu)的(de)(de)(de)(de)復測(ce)(ce)，防止(zhi)焊(han)接(jie)點脫焊(han)、環(huan)境及(ji)(ji)(ji)其它因素導(dao)致接(jie)地(di)(di)(di)(di)電(dian)阻(zu)超標(biao)。如(ru)果變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)接(jie)地(di)(di)(di)(di)電(dian)阻(zu)超標(biao)，雷(lei)擊時(shi)雷(lei)電(dian)流不能流入(ru)大地(di)(di)(di)(di)，反而(er)通(tong)過(guo)(guo)接(jie)地(di)(di)(di)(di)線將雷(lei)電(dian)壓(ya)(ya)(ya)加(jia)在(zai)(zai)配(pei)電(dian)變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)低(di)壓(ya)(ya)(ya)側再反向升壓(ya)(ya)(ya)為(wei)高(gao)電(dian)壓(ya)(ya)(ya)，將配(pei)變(bian)(bian)燒毀；四是(shi)安(an)(an)裝(zhuang)位(wei)置選(xuan)擇(ze)應適當(dang)，高(gao)壓(ya)(ya)(ya)避(bi)雷(lei)器(qi)(qi)(qi)安(an)(an)裝(zhuang)在(zai)(zai)靠(kao)配(pei)變(bian)(bian)高(gao)壓(ya)(ya)(ya)套管(guan)(guan)最近(jin)的(de)(de)(de)(de)引(yin)線處，盡量減小雷(lei)電(dian)直(zhi)接(jie)侵入(ru)配(pei)變(bian)(bian)的(de)(de)(de)(de)機會，低(di)壓(ya)(ya)(ya)避(bi)雷(lei)器(qi)(qi)(qi)裝(zhuang)在(zai)(zai)靠(kao)配(pei)變(bian)(bian)最近(jin)的(de)(de)(de)(de)低(di)壓(ya)(ya)(ya)套管(guan)(guan)處，以保(bao)證(zheng)雷(lei)電(dian)波(bo)侵入(ru)配(pei)變(bian)(bian)前(qian)的(de)(de)(de)(de)正確動作，按電(dian)氣設備安(an)(an)裝(zhuang)規(gui)(gui)范(fan)(fan)標(biao)準要(yao)(yao)(yao)求安(an)(an)裝(zhuang)，防止(zhi)盲目安(an)(an)裝(zhuang)而(er)失去保(bao)護的(de)(de)(de)(de)意(yi)義。

2、裝設(she)速斷(duan)、過(guo)(guo)電(dian)(dian)(dian)流(liu)(liu)(liu)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)(hu)(hu)，保(bao)(bao)(bao)(bao)證(zheng)有選(xuan)(xuan)擇(ze)(ze)性地切(qie)除故(gu)(gu)障(zhang)(zhang)(zhang)線(xian)路(lu)(lu)(lu)：配(pei)(pei)(pei)變的(de)(de)短路(lu)(lu)(lu)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)(hu)(hu)和(he)(he)過(guo)(guo)載保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)(hu)(hu)由裝設(she)于(yu)配(pei)(pei)(pei)變高(gao)(gao)壓(ya)(ya)(ya)(ya)(ya)側(ce)(ce)的(de)(de)熔(rong)(rong)(rong)斷(duan)器(qi)(qi)和(he)(he)低(di)壓(ya)(ya)(ya)(ya)(ya)側(ce)(ce)的(de)(de)漏(lou)(lou)電(dian)(dian)(dian)總保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)(hu)(hu)器(qi)(qi)（該裝置(zhi)有漏(lou)(lou)電(dian)(dian)(dian)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)(hu)(hu)和(he)(he)配(pei)(pei)(pei)變低(di)壓(ya)(ya)(ya)(ya)(ya)過(guo)(guo)電(dian)(dian)(dian)流(liu)(liu)(liu)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)(hu)(hu)）來實現(xian)。為了有效地保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)(hu)(hu)配(pei)(pei)(pei)變，必須正確選(xuan)(xuan)擇(ze)(ze)熔(rong)(rong)(rong)斷(duan)器(qi)(qi)的(de)(de)熔(rong)(rong)(rong)體(ti)(熔(rong)(rong)(rong)絲、熔(rong)(rong)(rong)片等)及低(di)壓(ya)(ya)(ya)(ya)(ya)過(guo)(guo)電(dian)(dian)(dian)流(liu)(liu)(liu)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)(hu)(hu)定(ding)(ding)值。高(gao)(gao)壓(ya)(ya)(ya)(ya)(ya)側(ce)(ce)熔(rong)(rong)(rong)絲的(de)(de)選(xuan)(xuan)擇(ze)(ze)，應能保(bao)(bao)(bao)(bao)證(zheng)在(zai)(zai)變壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)內(nei)部或(huo)(huo)外(wai)部套管處發生(sheng)短路(lu)(lu)(lu)時(shi)被熔(rong)(rong)(rong)斷(duan)。熔(rong)(rong)(rong)絲選(xuan)(xuan)擇(ze)(ze)原則：（1）容(rong)量在(zai)(zai)100kVA及以(yi)下的(de)(de)配(pei)(pei)(pei)變，高(gao)(gao)壓(ya)(ya)(ya)(ya)(ya)熔(rong)(rong)(rong)絲按(an)2～2.5倍(bei)(bei)額(e)定(ding)(ding)電(dian)(dian)(dian)流(liu)(liu)(liu)選(xuan)(xuan)擇(ze)(ze)；（2）容(rong)量在(zai)(zai)100kVA以(yi)上的(de)(de)配(pei)(pei)(pei)變，高(gao)(gao)壓(ya)(ya)(ya)(ya)(ya)熔(rong)(rong)(rong)絲按(an)1.5～2倍(bei)(bei)額(e)定(ding)(ding)電(dian)(dian)(dian)流(liu)(liu)(liu)選(xuan)(xuan)擇(ze)(ze)。低(di)壓(ya)(ya)(ya)(ya)(ya)側(ce)(ce)漏(lou)(lou)電(dian)(dian)(dian)總保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)(hu)(hu)器(qi)(qi)過(guo)(guo)流(liu)(liu)(liu)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)值取配(pei)(pei)(pei)變低(di)壓(ya)(ya)(ya)(ya)(ya)側(ce)(ce)額(e)定(ding)(ding)值的(de)(de)1.3倍(bei)(bei)，配(pei)(pei)(pei)變低(di)壓(ya)(ya)(ya)(ya)(ya)各(ge)分(fen)支線(xian)路(lu)(lu)(lu)過(guo)(guo)流(liu)(liu)(liu)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)(hu)(hu)定(ding)(ding)值不(bu)(bu)應大于(yu)總保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)(hu)(hu)的(de)(de)過(guo)(guo)流(liu)(liu)(liu)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)值，其值應小于(yu)配(pei)(pei)(pei)變低(di)壓(ya)(ya)(ya)(ya)(ya)側(ce)(ce)額(e)定(ding)(ding)電(dian)(dian)(dian)流(liu)(liu)(liu)，一(yi)(yi)般按(an)導線(xian){zd0}載流(liu)(liu)(liu)量選(xuan)(xuan)擇(ze)(ze)過(guo)(guo)流(liu)(liu)(liu)值，保(bao)(bao)(bao)(bao)證(zheng)在(zai)(zai)各(ge)出線(xian)回(hui)路(lu)(lu)(lu)發生(sheng)短路(lu)(lu)(lu)或(huo)(huo)輸出負(fu)載過(guo)(guo)大，引起配(pei)(pei)(pei)變過(guo)(guo)負(fu)荷(he)時(shi)能及時(shi)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)，切(qie)除負(fu)載和(he)(he)故(gu)(gu)障(zhang)(zhang)(zhang)線(xian)路(lu)(lu)(lu)，實現(xian)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)(hu)(hu)配(pei)(pei)(pei)變的(de)(de)目的(de)(de)。同時(shi)滿足(zu)各(ge)級(ji)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)(hu)(hu)的(de)(de)選(xuan)(xuan)擇(ze)(ze)性要(yao)求。低(di)壓(ya)(ya)(ya)(ya)(ya)分(fen)支回(hui)路(lu)(lu)(lu)短路(lu)(lu)(lu)故(gu)(gu)障(zhang)(zhang)(zhang)時(shi)，分(fen)支回(hui)路(lu)(lu)(lu)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)，漏(lou)(lou)電(dian)(dian)(dian)總保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)(hu)(hu)器(qi)(qi)過(guo)(guo)流(liu)(liu)(liu)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)(hu)(hu)不(bu)(bu)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)，低(di)壓(ya)(ya)(ya)(ya)(ya)側(ce)(ce)總回(hui)路(lu)(lu)(lu)故(gu)(gu)障(zhang)(zhang)(zhang)或(huo)(huo)短路(lu)(lu)(lu)時(shi)，低(di)壓(ya)(ya)(ya)(ya)(ya)側(ce)(ce)漏(lou)(lou)電(dian)(dian)(dian)總保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)(hu)(hu)器(qi)(qi)過(guo)(guo)流(liu)(liu)(liu)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)(hu)(hu)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)，高(gao)(gao)壓(ya)(ya)(ya)(ya)(ya)側(ce)(ce)熔(rong)(rong)(rong)體(ti)不(bu)(bu)應熔(rong)(rong)(rong)斷(duan)；變壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)內(nei)部故(gu)(gu)障(zhang)(zhang)(zhang)短路(lu)(lu)(lu)時(shi)，高(gao)(gao)壓(ya)(ya)(ya)(ya)(ya)側(ce)(ce)熔(rong)(rong)(rong)體(ti)熔(rong)(rong)(rong)斷(duan)，上一(yi)(yi)級(ji)變電(dian)(dian)(dian)站高(gao)(gao)壓(ya)(ya)(ya)(ya)(ya)線(xian)路(lu)(lu)(lu)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)(hu)(hu)裝置(zhi)不(bu)(bu)應動(dong)(dong)(dong)作(zuo)(zuo)(zuo)跳閘(zha)，保(bao)(bao)(bao)(bao)證(zheng)配(pei)(pei)(pei)電(dian)(dian)(dian)網保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)(hu)(hu)裝置(zhi)正確分(fen)級(ji)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)。配(pei)(pei)(pei)變高(gao)(gao)壓(ya)(ya)(ya)(ya)(ya)側(ce)(ce)熔(rong)(rong)(rong)體(ti)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)(hu)(hu)(hu)材料一(yi)(yi)定(ding)(ding)要(yao)按(an)標準配(pei)(pei)(pei)備，堅決杜絕用(yong)銅、鋁等金屬導體(ti)替(ti)代熔(rong)(rong)(rong)斷(duan)器(qi)(qi)熔(rong)(rong)(rong)體(ti)。

綜上(shang)所述：要(yao)使配(pei)(pei)電變(bian)壓器保(bao)持長期安全可靠運行(xing)(xing)，除加(jia)強提高保(bao)護(hu)配(pei)(pei)置技術水(shui)平之外(wai)，在日常(chang)的運行(xing)(xing)管理(li)(li)方面同樣也十分重要(yao)。作為(wei)配(pei)(pei)變(bian)運行(xing)(xing)管理(li)(li)人員，一(yi)定要(yao)做(zuo)到(dao)勤檢查、勤維護(hu)、勤測量，及(ji)時發現(xian)問題及(ji)時處(chu)理(li)(li)，采取(qu)各種措施來加(jia)強配(pei)(pei)電變(bian)壓器的保(bao)護(hu)，防止出現(xian)故障或事故，以保(bao)證配(pei)(pei)電網安全、穩定、可靠運行(xing)(xing)。

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