由于供電管理部門規定,要求大容量用戶cosφ在0.95,某公司老生產區大部分變電所無功功率補償柜,設備老、舊、自動化程度低(部分是二、三十年前的產品),經常出現投則過補,不投則欠補,使系統的功率因數偏低,達不到補償目的。且電容補償裝置如果頻繁投切,使補償裝置壽命縮短,損壞頻繁,已遠遠不能滿足其無功補償需求,因此要進行。
無功補償柜改造的目標
改(gai)(gai)造前,老(lao)廠區(qu)變(bian)電所補償柜(ju)(ju)功(gong)(gong)功(gong)(gong)率(lv)因(yin)數(shu)(shu)介于(yu)0.7-0.75左右(you),遠遠滿足不(bu)了低(di)壓配電室(shi)補償后(hou)的(de)功(gong)(gong)率(lv)因(yin)數(shu)(shu)要求(qiu)不(bu)低(di)于(yu)0.9的(de)規定。改(gai)(gai)造后(hou)的(de)目標是要實現無功(gong)(gong)功(gong)(gong)率(lv)補償柜(ju)(ju)功(gong)(gong)率(lv)因(yin)數(shu)(shu)達到0.95以上。
無功補償柜改造方案
根據變壓器容量(1000KVA)及負荷狀況,安裝了5組濾波電容器,每組容量60kvar,總容量為300kvar。
考慮到成本問題,保留了原有(you)框架,重(zhong)新自行設計了電(dian)(dian)器(qi)元(yuan)件(jian)的結(jie)構組(zu)(zu)件(jian)。只需投入(ru)3萬元(yuan)購買電(dian)(dian)器(qi)元(yuan)件(jian),淘汰舊的無功補(bu)(bu)償設備,選擇新型(xing)補(bu)(bu)償濾波(bo)電(dian)(dian)容器(qi)組(zu)(zu)、濾波(bo)電(dian)(dian)抗器(qi)組(zu)(zu)、無觸點投切開關等設備。提升了供(gong)電(dian)(dian)設備性能使(shi)無功補(bu)(bu)償實(shi)現智能化、自動(dong)化。滿足(zu)生產供(gong)電(dian)(dian)質量的補(bu)(bu)償需求。
采(cai)用了新型(xing)(xing)(xing)的濾波(bo)(bo)電(dian)抗器(qi),限制(zhi)(zhi)了涌(yong)流和(he)抑(yi)制(zhi)(zhi)了電(dian)網(wang)高次諧(xie)(xie)波(bo)(bo)。新型(xing)(xing)(xing)的無觸(chu)點晶閘管電(dian)容(rong)投(tou)切(qie)開關,采(cai)用過零出(chu)發,消除(chu)投(tou)切(qie)時(shi)涌(yong)流和(he)過渡過程減小了電(dian)網(wang)的波(bo)(bo)動(dong)。新型(xing)(xing)(xing)濾波(bo)(bo)電(dian)容(rong)器(qi)具(ju)有優良的自(zi)愈性,使用壽命長(chang)。多臺濾波(bo)(bo)補(bu)償柜運(yun)行(xing)時(shi),電(dian)網(wang)不產(chan)生諧(xie)(xie)振。
通過,取得了(le)顯著的節(jie)電(dian)(dian)(dian)(dian)效果。在(zai)(zai)正常負(fu)荷時間,我們觀(guan)(guan)察有2-3組電(dian)(dian)(dian)(dian)容器組在(zai)(zai)工作,也就是說有120Kvar-180Kvar投入,全年節(jie)約電(dian)(dian)(dian)(dian)能大概估算:251天×(120Kvar--180Kvar)×2度電(dian)(dian)(dian)(dian)=6萬(wan)度電(dian)(dian)(dian)(dian)——9萬(wan)度電(dian)(dian)(dian)(dian)左(zuo)右。經濟(ji)效益十(shi)分(fen)可觀(guan)(guan)。
希拓電(dian)氣是一家知名的無功(gong)補(bu)償裝(zhuang)置(zhi)生產商,同(tong)時提供一站式電(dian)容柜改(gai)造解決(jue)方案。采用優質(zhi)品牌元器件,專業(ye)施工團隊,規范施工流程,合(he)同(tong)約定功(gong)率因數(shu),改(gai)造后(hou)不達標,免費重新(xin)改(gai)造,更提供終(zhong)身售后(hou)咨(zi)詢(xun)服務,希拓電(dian)氣無功(gong)補(bu)償產品統一提供3年質(zhi)保。