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預裝式箱式變電站特點與優點都有哪些?目前,箱式變(bian)電(dian)站已廣泛應(ying)用于城(cheng)市供(gong)電(dian)、農村(cun)10kV~110kV中(zhong)(zhong)高壓小型變(bian)(配)電(dian)所(suo)、工礦企業(ye)、以及流動(dong)作業(ye)變(bian)電(dian)所(suo)的建設及升(sheng)級(ji)改(gai)造工程中(zhong)(zhong),其(qi)易于深(shen)入到電(dian)力負荷中(zhong)(zhong)心進(jin)行(xing)集中(zhong)(zhong)供(gong)電(dian),減少了供(gong)電(dian)半徑,提(ti)高了配電(dian)線路末(mo)端供(gong)電(dian)電(dian)能質量,尤其(qi)適用于城(cheng)市建設、農村(cun)電(dian)網技術(shu)升(sheng)級(ji)改(gai)造、野(ye)外施工供(gong)配電(dian)等工程領域。 1、技術先進安全可靠 箱式變電站(zhan)其箱體主(zhu)要采(cai)用(yong)國內(nei)較為(wei)領(ling)先的(de)(de)技(ji)術和生產工藝,其外(wai)殼一般采(cai)用(yong)鍍鋁鋅鋼板;其內(nei)部(bu)框架采(cai)用(yong)標(biao)準的(de)(de)集裝(zhuang)箱材(cai)料及制作生產工藝,具(ju)有非常良好的(de)(de)防腐蝕性(xing)能(neng)(neng),能(neng)(neng)夠(gou)保(bao)(bao)(bao)(bao)證(zheng)設備(bei)20a不銹(xiu)蝕;箱變內(nei)封板采(cai)用(yong)鋁合金扣板,其夾層中封填防火保(bao)(bao)(bao)(bao)溫性(xing)能(neng)(neng)較為(wei)優(you)越的(de)(de)材(cai)料;變電站(zhan)箱體內(nei)部(bu)安裝(zhuang)自(zi)動調節空(kong)調及除濕裝(zhuang)置,電氣設備(bei)在正常運(yun)行(xing)過程中不受自(zi)然氣候環境(jing)和外(wai)界(jie)污染等(deng)因素的(de)(de)影響(xiang),可以(yi)保(bao)(bao)(bao)(bao)證(zheng)變電站(zhan)在-40℃~+40℃溫度(du)范圍內(nei)始終保(bao)(bao)(bao)(bao)持安全穩定、節能(neng)(neng)經(jing)濟的(de)(de)運(yun)行(xing)性(xing)能(neng)(neng)。 2、集(ji)成自(zi)動(dong)化水平較高 箱(xiang)式變電站(zhan)(zhan)采用全站(zhan)(zhan)集成化(hua)、智(zhi)能(neng)化(hua)一體化(hua)設(she)計(ji)方案,其繼電保(bao)護(hu)系(xi)統(tong)采用微機(ji)綜(zong)合(he)自動化(hua)保(bao)護(hu)裝(zhuang)置,分散安裝(zhuang),可以實(shi)現(xian)變電站(zhan)(zhan)無人值(zhi)守“四遙(yao)”功(gong)(gong)能(neng),即遙(yao)測、遙(yao)信、遙(yao)控、遙(yao)調。變電站(zhan)(zhan)內(nei)部各控制(zhi)系(xi)統(tong)單元均具有獨(du)立(li)運行功(gong)(gong)能(neng),可以通過微機(ji)保(bao)護(hu)系(xi)統(tong)實(shi)現(xian)的運行參數的遠方設(she)置,對箱(xiang)體內(nei)部濕度、溫度等參變量的遠程調節控制(zhi),滿足無人值(zhi)班的功(gong)(gong)能(neng)需(xu)求(qiu)。 3、預裝式箱式變(bian)電站工廠預制(zhi)化 箱式變(bian)電站(zhan)(zhan)按(an)照(zhao)組(zu)合式結構(gou)進(jin)行(xing)設計,設計人(ren)員只需(xu)(xu)要(yao)根據工(gong)(gong)(gong)程實(shi)際(ji)需(xu)(xu)要(yao)情況,設計出電氣(qi)一次主接(jie)線(xian)圖(tu)和箱外(wai)設備,就可以按(an)照(zhao)箱式變(bian)電站(zhan)(zhan)廠家(jia)所提供的(de)箱式變(bian)電站(zhan)(zhan)規(gui)格、型號、組(zu)合方(fang)式等設計出完(wan)整的(de)方(fang)案。設計人(ren)員所選用(yong)的(de)電氣(qi)設備在工(gong)(gong)(gong)廠進(jin)行(xing)一次組(zu)合安(an)裝(zhuang)、調試(shi)合格后(hou),就能投(tou)入到工(gong)(gong)(gong)程實(shi)際(ji)應用(yong)中(zhong)。箱式變(bian)電站(zhan)(zhan)真(zhen)正實(shi)現了變(bian)電站(zhan)(zhan)制(zhi)造工(gong)(gong)(gong)廠預(yu)制(zhi)化(hua),不僅簡化(hua)了設計思路(lu)、方(fang)案,同時(shi)縮短了工(gong)(gong)(gong)程施工(gong)(gong)(gong)周期(qi),現場(chang)安(an)裝(zhuang)調試(shi)施工(gong)(gong)(gong)僅需(xu)(xu)將(jiang)已(yi)組(zu)裝(zhuang)完(wan)好(hao)的(de)箱體進(jin)行(xing)定位,將(jiang)箱體間隔間的(de)電纜(lan)聯接(jie),并進(jin)行(xing)保護定值(zhi)校驗、傳動試(shi)驗、以及(ji)其它相(xiang)關調試(shi)工(gong)(gong)(gong)作后(hou),就能投(tou)入都(dou)實(shi)際(ji)工(gong)(gong)(gong)程應用(yong)中(zhong)。 4、組合方式(shi)更加(jia)靈活 箱(xiang)(xiang)式變電(dian)站由于其(qi)內部結構(gou)比較(jiao)緊湊,且每個間隔均按(an)照(zhao)獨立(li)集(ji)成系統設(she)計方案,這使得箱(xiang)(xiang)式變電(dian)站在實(shi)際(ji)選用(yong)中(zhong)根據需要(yao)其(qi)組合(he)方式較(jiao)為(wei)靈活,可以全部采用(yong)箱(xiang)(xiang)式結構(gou),即將高壓側(ce)(ce)和低壓側(ce)(ce)電(dian)氣(qi)(qi)設(she)備全部設(she)置(zhi)在箱(xiang)(xiang)體(ti)(ti)內,組成全箱(xiang)(xiang)密封式變電(dian)站;也可以按(an)照(zhao)設(she)計要(yao)求將高壓側(ce)(ce)電(dian)氣(qi)(qi)設(she)備置(zhi)于箱(xiang)(xiang)體(ti)(ti)外部,低壓側(ce)(ce)電(dian)氣(qi)(qi)設(she)備及控制保護系統裝備置(zhi)于箱(xiang)(xiang)體(ti)(ti)內部安(an)裝。 5、預裝(zhuang)式箱式變電站(zhan)綜合投資經(jing)濟效益高 箱(xiang)式變電(dian)站與同規模容(rong)量的綜(zong)合(he)自動化變電(dian)站相比,其在經(jing)濟性能(neng)(neng)方面(mian)大約(yue)可(ke)以減(jian)少40%~50%的綜(zong)合(he)投資;在技術(shu)性能(neng)(neng)方面(mian),其運行安全可(ke)靠性非常高。選(xuan)用箱(xiang)式變電(dian)站基本不存(cun)在房建工(gong)程量,其占地面(mian)積較(jiao)(jiao)小(xiao),對于我國可(ke)用耕(geng)地面(mian)積不斷減(jian)少的條件下,占地面(mian)積較(jiao)(jiao)小(xiao)的箱(xiang)式變電(dian)站已成為變電(dian)站建設(she)(she)發展的必然方向,將高壓、變壓器、低壓電(dian)氣設(she)(she)備進行集中(zhong)一體化布(bu)置(zhi),符合(he)我國節約(yue)土地的基本政(zheng)策要求。 變(bian)電(dian)(dian)站箱體內的電(dian)(dian)氣一次(ci)設備(bei)采用(yong)單元真(zhen)空開關柜(ju)、干式(shi)(shi)配(pei)電(dian)(dian)變(bian)壓器、干式(shi)(shi)電(dian)(dian)壓(電(dian)(dian)流)互感器、以及真(zhen)空斷路器(配(pei)備(bei)電(dian)(dian)動彈簧(huang)操(cao)作(zuo)機(ji)構)等國內先進的技術(shu)設備(bei),產品按照全(quan)絕緣結構設備(bei),無裸露(lu)帶電(dian)(dian)部(bu)分,完全(quan)能到零觸(chu)電(dian)(dian)事故運(yun)行需要,且全(quan)站可實現無油(you)化(hua)自動運(yun)行,二次(ci)設備(bei)集成(cheng)自動化(hua)水平較高(gao),大(da)大(da)減少(shao)了(le)變(bian)電(dian)(dian)站運(yun)行維護(hu)工作(zuo)量,能夠實現無人值守等功能。 |