改(gai)進成(cheng)套設(she)備的(de)功能，添加單相接(jie)(jie)地(di)(di)毛(mao)(mao)病就近檢測和阻(zu)隔，關于(yu)中性點(dian)不接(jie)(jie)地(di)(di)和經(jing)消弧線(xian)圈接(jie)(jie)地(di)(di)毛(mao)(mao)病處理辦法(fa)也將(jiang)是(shi)一項重大的(de)技能革(ge)新(xin)。提升配(pei)網單相接(jie)(jie)地(di)(di)毛(mao)(mao)病選線(xian)成(cheng)功率、探索完善(shan)接(jie)(jie)地(di)(di)毛(mao)(mao)病阻(zu)隔技能。

現有(you)接(jie)(jie)地毛病(bing)選(xuan)(xuan)(xuan)線(xian)維(wei)(wei)護主要(yao)選(xuan)(xuan)(xuan)用(yong)中性(xing)點經小(xiao)電阻(zu)接(jie)(jie)地辦法下(xia)的(de)(de)零(ling)序電流(liu)維(wei)(wei)護或(huo)中性(xing)點非有(you)用(yong)接(jie)(jie)地辦法下(xia)的(de)(de)小(xiao)電流(liu)接(jie)(jie)地選(xuan)(xuan)(xuan)線(xian)維(wei)(wei)護，在面臨(lin)高阻(zu)、間歇性(xing)等毛病(bing)時(shi)，仍存在選(xuan)(xuan)(xuan)線(xian)準(zhun)確率差(cha)，無法有(you)用(yong)阻(zu)隔毛病(bing)，存在巨大隱患。當高阻(zu)接(jie)(jie)地到達(da)1000歐姆以(yi)上時(shi)，設備(bei)動(dong)作(zuo)(zuo)牢靠(kao)率80%；設備(bei)動(dong)作(zuo)(zuo)后選(xuan)(xuan)(xuan)線(xian)準(zhun)確率90%。毛病(bing)檢測精(jing)度差(cha)開關拒動(dong)誤動(dong)率高，導致配電網(wang)牢靠(kao)性(xing)下(xia)降(jiang)。

從配(pei)電(dian)(dian)(dian)(dian)(dian)網(wang)規劃規劃下(xia)手(shou)合理的(de)(de)(de)(de)選(xuan)擇中(zhong)性點(dian)接(jie)(jie)(jie)地(di)(di)(di)辦法，開(kai)展(zhan)高低壓開(kai)關(guan)柜成套設備技能研(yan)究，開(kai)展(zhan)小(xiao)電(dian)(dian)(dian)(dian)(dian)流接(jie)(jie)(jie)地(di)(di)(di)體系(xi)單相(xiang)接(jie)(jie)(jie)地(di)(di)(di)毛(mao)(mao)(mao)(mao)病(bing)選(xuan)線(xian)(xian)辦法的(de)(de)(de)(de)研(yan)究，進一步提高單相(xiang)接(jie)(jie)(jie)地(di)(di)(di)毛(mao)(mao)(mao)(mao)病(bing)選(xuan)線(xian)(xian)的(de)(de)(de)(de)準確(que)率。選(xuan)用小(xiao)電(dian)(dian)(dian)(dian)(dian)流接(jie)(jie)(jie)地(di)(di)(di)體系(xi)的(de)(de)(de)(de)區域要(yao)裝(zhuang)備接(jie)(jie)(jie)地(di)(di)(di)毛(mao)(mao)(mao)(mao)病(bing)線(xian)(xian)段判別與(yu)阻隔設備。國家電(dian)(dian)(dian)(dian)(dian)網(wang)正在(zai)修訂的(de)(de)(de)(de)《配(pei)電(dian)(dian)(dian)(dian)(dian)網(wang)技能導則》規則變電(dian)(dian)(dian)(dian)(dian)站要(yao)安裝(zhuang)牢靠的(de)(de)(de)(de)選(xuan)線(xian)(xian)設備，在(zai)10s內切除的(de)(de)(de)(de)接(jie)(jie)(jie)地(di)(di)(di)毛(mao)(mao)(mao)(mao)病(bing)。在(zai)小(xiao)電(dian)(dian)(dian)(dian)(dian)流接(jie)(jie)(jie)地(di)(di)(di)配(pei)電(dian)(dian)(dian)(dian)(dian)網(wang)中(zhong)，消(xiao)弧線(xian)(xian)圈將接(jie)(jie)(jie)地(di)(di)(di)電(dian)(dian)(dian)(dian)(dian)流降至(zhi)只有幾個安培，盡(jin)管有利于熄(xi)弧，但(dan)也使毛(mao)(mao)(mao)(mao)病(bing)線(xian)(xian)路(lu)的(de)(de)(de)(de)工頻零(ling)序(xu)電(dian)(dian)(dian)(dian)(dian)流往往小(xiao)于非(fei)毛(mao)(mao)(mao)(mao)病(bing)線(xian)(xian)路(lu)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)流并且(qie)二(er)者的(de)(de)(de)(de)相(xiang)位也根本相(xiang)同，毛(mao)(mao)(mao)(mao)病(bing)線(xian)(xian)路(lu)工頻零(ling)序(xu)電(dian)(dian)(dian)(dian)(dian)流沒有了差異與(yu)非(fei)毛(mao)(mao)(mao)(mao)病(bing)線(xian)(xian)路(lu)的(de)(de)(de)(de)特征，這關(guan)于單相(xiang)接(jie)(jie)(jie)地(di)(di)(di)毛(mao)(mao)(mao)(mao)病(bing)檢(jian)測來說正確(que)選(xuan)線(xian)(xian)是困難的(de)(de)(de)(de)。

10KV電(dian)(dian)(dian)(dian)力體系(xi)大(da)多是小電(dian)(dian)(dian)(dian)流接地(di)(di)體系(xi)，當體系(xi)中(zhong)產(chan)生單相(xiang)接地(di)(di)時(shi)，不(bu)(bu)會產(chan)生很(hen)大(da)的短(duan)(duan)路(lu)電(dian)(dian)(dian)(dian)流。毛(mao)(mao)病(bing)(bing)點電(dian)(dian)(dian)(dian)弧(hu)經過(guo)消弧(hu)線圈補償感(gan)抗后能(neng)夠(gou)自行(xing)平息，熄弧(hu)后接地(di)(di)址絕(jue)緣(yuan)(yuan)可自行(xing)康復，能(neng)主動鏟除(chu)單相(xiang)接地(di)(di)毛(mao)(mao)病(bing)(bing)。如果間(jian)歇性弧(hu)光不(bu)(bu)能(neng)平息，長(chang)時(shi)間(jian)帶電(dian)(dian)(dian)(dian)運(yun)轉會造(zao)成(cheng)諧振過(guo)電(dian)(dian)(dian)(dian)壓，產(chan)生幾倍(bei)于正常的過(guo)電(dian)(dian)(dian)(dian)壓，過(guo)電(dian)(dian)(dian)(dian)壓將進一(yi)步(bu)使線路(lu)上的絕(jue)緣(yuan)(yuan)層絕(jue)緣(yuan)(yuan)子擊穿，造(zao)成(cheng)嚴峻的相(xiang)間(jian)短(duan)(duan)路(lu)事端。不(bu)(bu)管是哪(na)種情況都須要對毛(mao)(mao)病(bing)(bing)點定位，隨后趕快組織(zhi)維(wei)修毛(mao)(mao)病(bing)(bing)點。單相(xiang)接地(di)(di)毛(mao)(mao)病(bing)(bing)產(chan)生后能(neng)維(wei)持(chi)運(yun)轉一(yi)定時(shi)間(jian)，因此大(da)大(da)提高了供電(dian)(dian)(dian)(dian)牢靠性。

配電開關的一二次(ci)成套設備(bei)的技能研發，是為了更好(hao)的標準配網主設備(bei)，保障建造(zao)過程(cheng)中一二次(ci)同步建造(zao)投運，防止后(hou)期的改(gai)造(zao)，關于(yu)縮短施工(gong)期、提高牢靠(kao)性及運維功率、簡化投標流程(cheng)等具有重要意義。