在對電氣設施檢查發現，電容器接觸器觸頭出現了較為嚴重的燒損現象，經過維修處理后繼(ji)續投用，但歷年來接觸(chu)器觸(chu)頭(tou)均未(wei)發生如此(ci)嚴重的現象。
原因分析
根據(ju)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器投入(ru)運行(xing)和(he)切除過(guo)程分析(xi)，電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器投入(ru)時(shi)浪涌電(dian)(dian)(dian)(dian)流(liu)的產生(sheng)(sheng)使得接觸(chu)(chu)器觸(chu)(chu)點閉合時(shi)產生(sheng)(sheng)火花(hua)，容(rong)(rong)(rong)易(yi)(yi)(yi)燒損觸(chu)(chu)電(dian)(dian)(dian)(dian)，切除電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器時(shi)會產生(sheng)(sheng)電(dian)(dian)(dian)(dian)弧，電(dian)(dian)(dian)(dian)壓(ya)瞬速降低，但電(dian)(dian)(dian)(dian)流(liu)先升后(hou)降，接觸(chu)(chu)器觸(chu)(chu)點容(rong)(rong)(rong)易(yi)(yi)(yi)粘(zhan)連，造(zao)(zao)成回路段不開。根據(ju)系(xi)(xi)統的諧(xie)波狀況進行(xing)了分析(xi)和(he)確認(ren)，最終確定原因未：由于(yu)集團公司電(dian)(dian)(dian)(dian)解錳廠2臺整流(liu)變(bian)(bian)壓(ya)器的投運，導致外電(dian)(dian)(dian)(dian)網系(xi)(xi)統存在(zai)嚴重諧(xie)波分量，系(xi)(xi)統諧(xie)波畸變(bian)(bian)率(lv)在(zai)7%以上(shang)，超過(guo)中(zhong)壓(ya)系(xi)(xi)統電(dian)(dian)(dian)(dian)壓(ya)的諧(xie)波畸變(bian)(bian)率(lv)不超過(guo)4%的規定。在(zai)高次諧(xie)波造(zao)(zao)成的尖峰電(dian)(dian)(dian)(dian)壓(ya)作用下，電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器組(zu)合閘瞬態(tai)電(dian)(dian)(dian)(dian)流(liu)遠(yuan)遠(yuan)超過(guo)其額定電(dian)(dian)(dian)(dian)流(liu)，同時(shi)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器組(zu)對(dui)高次諧(xie)波的阻(zu)抗很(hen)小(xiao)，很(hen)容(rong)(rong)(rong)易(yi)(yi)(yi)造(zao)(zao)成電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器組(zu)過(guo)負荷(he)運行(xing)，若電(dian)(dian)(dian)(dian)壓(ya)、電(dian)(dian)(dian)(dian)流(liu)波行(xing)發生(sheng)(sheng)嚴重畸變(bian)(bian)，基波電(dian)(dian)(dian)(dian)流(liu)擴大(da)將造(zao)(zao)成接觸(chu)(chu)器燒觸(chu)(chu)頭，相與相或相與地短路，甚至(zhi)造(zao)(zao)成接觸(chu)(chu)器損壞。
處理過程
首(shou)先(xian)進(jin)行(xing)外(wai)部(bu)(bu)維(wei)護工(gong)作(zuo)，清掃接觸(chu)器外(wai)部(bu)(bu)灰塵(chen)，對(dui)緊(jin)固(gu)件松動(dong)進(jin)行(xing)檢查，特別是(shi)導(dao)線(xian)連接部(bu)(bu)分進(jin)行(xing)緊(jin)固(gu)并套上絕緣套管，防止接觸(chu)松動(dong)而出(chu)現(xian)發熱現(xian)象(xiang)；其(qi)次(ci)對(dui)觸(chu)點(dian)系統進(jin)行(xing)檢查，對(dui)動(dong)、靜觸(chu)點(dian)位置進(jin)行(xing)調整及磨損(sun)觸(chu)點(dian)用整形銼進(jin)行(xing)處(chu)理。
希拓電氣創立于2014年，是一家集研發、生產、銷售和服務于一體的高新技術企業，致力于為客戶提供一流的電能質量解決方案，旗下有希拓電氣（上海）有限公司、希拓電氣（常州）有限公司。主要產品包括：電容器、電抗器、晶閘管投切模塊，無功功率控制器、低壓無功補償成套裝置、有源電力濾波器(qi)、靜止無功發生器(qi)及諧(xie)波保護器(qi)等(deng)。
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