文章來源：國家電網公司 發布(bu)時(shi)間：2010-06-04
5月26日12時18分，國(guo)家電(dian)網公(gong)司±800千伏向家壩—上海特高壓直(zhi)流輸電(dian)示范(fan)工(gong)程奉賢換流站35千伏站用(yong)電(dian)系統帶負荷測試順利完成，一次(ci)啟(qi)動成功。
奉賢換流(liu)站(zhan)站(zhan)用(yong)(yong)電(dian)(dian)系統(tong)采用(yong)(yong)3回(hui)(hui)獨立電(dian)(dian)源供電(dian)(dian)，2回(hui)(hui)工作站(zhan)用(yong)(yong)電(dian)(dian)源采用(yong)(yong)515/10千(qian)(qian)(qian)(qian)(qian)伏(fu)(fu)降(jiang)壓變(bian)(bian)(bian)，分(fen)別從(cong)500千(qian)(qian)(qian)(qian)(qian)伏(fu)(fu)配電(dian)(dian)裝(zhuang)置母線(xian)和交流(liu)濾波器母線(xian)引接(jie)，另(ling)一回(hui)(hui)備(bei)用(yong)(yong)電(dian)(dian)源從(cong)站(zhan)外南匯220千(qian)(qian)(qian)(qian)(qian)伏(fu)(fu)變(bian)(bian)(bian)電(dian)(dian)站(zhan)35千(qian)(qian)(qian)(qian)(qian)伏(fu)(fu)母線(xian)引接(jie)。本次投運的是(shi)35千(qian)(qian)(qian)(qian)(qian)伏(fu)(fu)備(bei)用(yong)(yong)電(dian)(dian)源，安(an)裝(zhuang)35/10千(qian)(qian)(qian)(qian)(qian)伏(fu)(fu)高壓站(zhan)用(yong)(yong)變(bian)(bian)(bian)1臺，容量(liang)1萬千(qian)(qian)(qian)(qian)(qian)伏(fu)(fu)安(an)；10臺10/0.4千(qian)(qian)(qian)(qian)(qian)伏(fu)(fu)站(zhan)用(yong)(yong)變(bian)(bian)(bian)，單(dan)臺容量(liang)為2000千(qian)(qian)(qian)(qian)(qian)伏(fu)(fu)安(an)，分(fen)別安(an)裝(zhuang)在站(zhan)內(nei)5個0.4千(qian)(qian)(qian)(qian)(qian)伏(fu)(fu)室(shi)內(nei)，35千(qian)(qian)(qian)(qian)(qian)伏(fu)(fu)、10千(qian)(qian)(qian)(qian)(qian)伏(fu)(fu)、0.4千(qian)(qian)(qian)(qian)(qian)伏(fu)(fu)配電(dian)(dian)裝(zhuang)置均采用(yong)(yong)開關柜型式。
35千伏站(zhan)用電系統(tong)是換(huan)流(liu)站(zhan)安(an)裝的(de)(de)關鍵工序，是換(huan)流(liu)變(bian)和(he)換(huan)流(liu)閥安(an)裝的(de)(de)前(qian)(qian)提(ti)條(tiao)件(jian)。本(ben)工程第一批4臺換(huan)流(liu)變(bian)將于7月初(chu)運抵換(huan)流(liu)站(zhan)現場安(an)裝，6月底雙低(di)端閥廳(ting)、極1高端閥廳(ting)將具備交安(an)條(tiao)件(jian)。屆時三個閥廳(ting)的(de)(de)通(tong)風系統(tong)將開通(tong)，用電負載大增，目前(qian)(qian)的(de)(de)施(shi)工臨時電源不(bu)能滿足要求，站(zhan)用電系統(tong)的(de)(de)投運顯得尤為重要。
本次35千伏(fu)站(zhan)用電(dian)系統(tong)的(de)投(tou)(tou)運，是(shi)站(zhan)內的(de)第1次設備正(zheng)式(shi)帶電(dian)，標志著奉賢換流站(zhan)完成了又(you)一個重要的(de)里(li)程(cheng)碑進度節點目標，為后續的(de)換流變(bian)安裝提供(gong)了可靠的(de)電(dian)源保證，也為12月15日(ri)極1系統(tong)投(tou)(tou)運奠定了基礎。