文章(zhang)來源：國家電網公司(si) 發布時(shi)間：2016-06-11
6月5日(ri)15時25分，國網甘肅(su)電(dian)力重(zhong)點工程——750千伏河(he)西變電(dian)站1號主變系統順(shun)利啟動(dong)，進入試運(yun)行(xing)階段。
750千伏(fu)河西變電(dian)站1號主(zhu)(zhu)變擴建(jian)工程(cheng)竣工后，河西變主(zhu)(zhu)變容量將增加至(zhi)420萬千伏(fu)安，將為(wei)河西地區經濟(ji)發展(zhan)提(ti)供更(geng)為(wei)可靠(kao)的電(dian)源支撐，并進一步優化(hua)主(zhu)(zhu)網(wang)架構(gou)，為(wei)清(qing)潔能源送出提(ti)供堅強支撐。
750千(qian)(qian)(qian)伏(fu)河西(xi)變(bian)(bian)(bian)(bian)(bian)(bian)電(dian)站于2010年投運(yun)，是連(lian)接西(xi)北電(dian)網(wang)、新(xin)(xin)疆電(dian)網(wang)及(ji)河泉(quan)千(qian)(qian)(qian)萬千(qian)(qian)(qian)瓦(wa)風電(dian)送(song)出的(de)重(zhong)要電(dian)網(wang)樞紐。該(gai)站1號主(zhu)(zhu)(zhu)變(bian)(bian)(bian)(bian)(bian)(bian)擴建工(gong)(gong)程新(xin)(xin)增加了(le)(le)3×70萬千(qian)(qian)(qian)伏(fu)安(an)(an)主(zhu)(zhu)(zhu)變(bian)(bian)(bian)(bian)(bian)(bian)1組(zu)，同時(shi)擴建了(le)(le)主(zhu)(zhu)(zhu)變(bian)(bian)(bian)(bian)(bian)(bian)三(san)側(ce)間隔，新(xin)(xin)增加了(le)(le)66千(qian)(qian)(qian)伏(fu)側(ce)電(dian)容器5組(zu)、電(dian)抗器5組(zu)。在主(zhu)(zhu)(zhu)變(bian)(bian)(bian)(bian)(bian)(bian)投運(yun)前期，按照《750千(qian)(qian)(qian)伏(fu)河西(xi)變(bian)(bian)(bian)(bian)(bian)(bian)1號主(zhu)(zhu)(zhu)變(bian)(bian)(bian)(bian)(bian)(bian)擴建工(gong)(gong)程驗(yan)(yan)收細則》，該(gai)公司檢修人員配合甘肅送(song)變(bian)(bian)(bian)(bian)(bian)(bian)電(dian)工(gong)(gong)程公司施工(gong)(gong)人員對(dui)主(zhu)(zhu)(zhu)變(bian)(bian)(bian)(bian)(bian)(bian)本體(ti)及(ji)三(san)側(ce)通流(liu)通壓(ya)試驗(yan)(yan)、保護裝置回路驗(yan)(yan)證等驗(yan)(yan)收工(gong)(gong)作中發現的(de)缺(que)陷、安(an)(an)全隱患及(ji)時(shi)進行了(le)(le)整改。投運(yun)當(dang)天，檢修人員細致地進行了(le)(le)主(zhu)(zhu)(zhu)變(bian)(bian)(bian)(bian)(bian)(bian)三(san)側(ce)電(dian)壓(ya)互感器核相、三(san)側(ce)開關電(dian)流(liu)互感器二次回路相量測試等工(gong)(gong)作，確保了(le)(le)1號主(zhu)(zhu)(zhu)變(bian)(bian)(bian)(bian)(bian)(bian)的(de)順利投運(yun)。
為保證1號主變投運(yun)工作有序推進(jin)，國網甘肅(su)公司克服(fu)任務重、人員少、時間緊的困(kun)難(nan)，合理部(bu)署、攻堅克難(nan)，及早按(an)照啟(qi)動投運(yun)方案(an)，認真細致填寫操(cao)作票(piao)，嚴格辦理工作票(piao)。在啟(qi)動前，運(yun)維人員與網調(diao)、省監(jian)控(kong)對點8000多點次；投運(yun)期間，各級管理人員坐鎮指揮(hui)，監(jian)督現場“兩(liang)票(piao)三制”執(zhi)行，督促(cu)各項安(an)全措施(shi)、各類事故(gu)預案(an)的執(zhi)行情況，確保投運(yun)工作全過(guo)程萬無一失。本次啟(qi)動中運(yun)維人員執(zhi)行調(diao)度令156項，執(zhi)行操(cao)作7000余項。
750千伏河西(xi)變(bian)電(dian)站1號主(zhu)變(bian)投運(yun)后，將有效緩解河西(xi)變(bian)單臺(tai)主(zhu)變(bian)運(yun)行存在的(de)電(dian)網風(feng)險，有效提高新能源(yuan)外送(song)的(de)安全(quan)系數。