改(gai)進成套設備(bei)的功(gong)能(neng)，添加單(dan)相(xiang)接(jie)地(di)(di)(di)毛(mao)病(bing)就近檢(jian)測和阻隔，關于中(zhong)性點不(bu)接(jie)地(di)(di)(di)和經(jing)消弧線圈接(jie)地(di)(di)(di)毛(mao)病(bing)處理辦法也將是一(yi)項重大的技能(neng)革(ge)新。提升配(pei)網單(dan)相(xiang)接(jie)地(di)(di)(di)毛(mao)病(bing)選線成功(gong)率、探索完(wan)善接(jie)地(di)(di)(di)毛(mao)病(bing)阻隔技能(neng)。

現(xian)有接(jie)(jie)地(di)(di)毛病(bing)(bing)選線(xian)維(wei)護主要選用中(zhong)性(xing)點經小(xiao)(xiao)電(dian)(dian)(dian)阻接(jie)(jie)地(di)(di)辦法(fa)下(xia)的零序(xu)電(dian)(dian)(dian)流維(wei)護或中(zhong)性(xing)點非有用接(jie)(jie)地(di)(di)辦法(fa)下(xia)的小(xiao)(xiao)電(dian)(dian)(dian)流接(jie)(jie)地(di)(di)選線(xian)維(wei)護，在(zai)面臨高阻、間歇性(xing)等毛病(bing)(bing)時，仍(reng)存(cun)在(zai)選線(xian)準確率差(cha)，無法(fa)有用阻隔毛病(bing)(bing)，存(cun)在(zai)巨大隱患。當高阻接(jie)(jie)地(di)(di)到達1000歐姆以上時，設備動(dong)(dong)作(zuo)牢(lao)靠率80%；設備動(dong)(dong)作(zuo)后選線(xian)準確率90%。毛病(bing)(bing)檢測精度差(cha)開(kai)關拒(ju)動(dong)(dong)誤動(dong)(dong)率高，導(dao)致配電(dian)(dian)(dian)網牢(lao)靠性(xing)下(xia)降(jiang)。

從(cong)配(pei)(pei)電(dian)網規劃(hua)規劃(hua)下手合(he)理的(de)(de)(de)選(xuan)(xuan)擇(ze)中(zhong)(zhong)性點接(jie)地(di)辦法，開展(zhan)(zhan)高低(di)壓開關(guan)柜成套設備技能(neng)研(yan)究，開展(zhan)(zhan)小(xiao)(xiao)電(dian)流(liu)(liu)(liu)接(jie)地(di)體(ti)系單相(xiang)(xiang)接(jie)地(di)毛(mao)(mao)(mao)病(bing)(bing)選(xuan)(xuan)線(xian)(xian)辦法的(de)(de)(de)研(yan)究，進一(yi)步提高單相(xiang)(xiang)接(jie)地(di)毛(mao)(mao)(mao)病(bing)(bing)選(xuan)(xuan)線(xian)(xian)的(de)(de)(de)準(zhun)確(que)率。選(xuan)(xuan)用(yong)小(xiao)(xiao)電(dian)流(liu)(liu)(liu)接(jie)地(di)體(ti)系的(de)(de)(de)區域要裝備接(jie)地(di)毛(mao)(mao)(mao)病(bing)(bing)線(xian)(xian)段判別與阻(zu)隔(ge)設備。國(guo)家(jia)電(dian)網正(zheng)在(zai)修(xiu)訂的(de)(de)(de)《配(pei)(pei)電(dian)網技能(neng)導則》規則變電(dian)站要安(an)裝牢靠(kao)的(de)(de)(de)選(xuan)(xuan)線(xian)(xian)設備，在(zai)10s內(nei)切(qie)除的(de)(de)(de)接(jie)地(di)毛(mao)(mao)(mao)病(bing)(bing)。在(zai)小(xiao)(xiao)電(dian)流(liu)(liu)(liu)接(jie)地(di)配(pei)(pei)電(dian)網中(zhong)(zhong)，消弧線(xian)(xian)圈將接(jie)地(di)電(dian)流(liu)(liu)(liu)降至只有(you)(you)幾個安(an)培，盡管有(you)(you)利于熄(xi)弧，但(dan)也使毛(mao)(mao)(mao)病(bing)(bing)線(xian)(xian)路(lu)的(de)(de)(de)工頻零序電(dian)流(liu)(liu)(liu)往往小(xiao)(xiao)于非毛(mao)(mao)(mao)病(bing)(bing)線(xian)(xian)路(lu)的(de)(de)(de)電(dian)流(liu)(liu)(liu)并且二者的(de)(de)(de)相(xiang)(xiang)位也根本相(xiang)(xiang)同，毛(mao)(mao)(mao)病(bing)(bing)線(xian)(xian)路(lu)工頻零序電(dian)流(liu)(liu)(liu)沒有(you)(you)了差異與非毛(mao)(mao)(mao)病(bing)(bing)線(xian)(xian)路(lu)的(de)(de)(de)特征，這(zhe)關(guan)于單相(xiang)(xiang)接(jie)地(di)毛(mao)(mao)(mao)病(bing)(bing)檢測來(lai)說正(zheng)確(que)選(xuan)(xuan)線(xian)(xian)是困難的(de)(de)(de)。

10KV電(dian)(dian)力體(ti)(ti)系大(da)(da)(da)多是(shi)小(xiao)電(dian)(dian)流接地(di)體(ti)(ti)系，當體(ti)(ti)系中(zhong)產生單(dan)相接地(di)時，不(bu)會(hui)產生很大(da)(da)(da)的(de)短路電(dian)(dian)流。毛(mao)病點(dian)電(dian)(dian)弧(hu)經過消弧(hu)線(xian)圈(quan)補償感抗(kang)后能(neng)夠自行平息，熄(xi)弧(hu)后接地(di)址絕(jue)緣(yuan)可自行康復，能(neng)主動鏟除單(dan)相接地(di)毛(mao)病。如果(guo)間(jian)歇(xie)性(xing)弧(hu)光不(bu)能(neng)平息，長時間(jian)帶(dai)電(dian)(dian)運轉(zhuan)(zhuan)會(hui)造成(cheng)諧振過電(dian)(dian)壓(ya)(ya)，產生幾倍于正常的(de)過電(dian)(dian)壓(ya)(ya)，過電(dian)(dian)壓(ya)(ya)將進一(yi)步使線(xian)路上的(de)絕(jue)緣(yuan)層(ceng)絕(jue)緣(yuan)子擊穿，造成(cheng)嚴峻的(de)相間(jian)短路事(shi)端。不(bu)管是(shi)哪種(zhong)情(qing)況都(dou)須要(yao)對毛(mao)病點(dian)定(ding)(ding)位，隨后趕快組織維修(xiu)毛(mao)病點(dian)。單(dan)相接地(di)毛(mao)病產生后能(neng)維持(chi)運轉(zhuan)(zhuan)一(yi)定(ding)(ding)時間(jian)，因此(ci)大(da)(da)(da)大(da)(da)(da)提高了供電(dian)(dian)牢(lao)靠性(xing)。

配(pei)電開關的(de)一二次(ci)成套(tao)設(she)備的(de)技(ji)能研發，是為了更好(hao)的(de)標(biao)(biao)準(zhun)配(pei)網主設(she)備，保障建(jian)(jian)造過程中一二次(ci)同步建(jian)(jian)造投運，防止后期的(de)改造，關于縮短(duan)施工期、提高牢靠性及運維(wei)功率、簡化投標(biao)(biao)流程等(deng)具有(you)重要意義。