免费菠萝视频app下载

　　1月10日，由西(xi)北電(dian)(dian)網(wang)公(gong)司牽(qian)頭(tou)完(wan)成(cheng)的《750千伏同塔雙回緊(jin)湊型交(jiao)流輸電(dian)(dian)線(xian)路關鍵技術(shu)(shu)研究》通過國(guo)家電(dian)(dian)網(wang)公(gong)司評審驗收。評審意見認(ren)為(wei)，該項目研究成(cheng)果(guo)達到國(guo)際領先水(shui)平，為(wei)西(xi)北高海拔地區(qu)750千伏緊(jin)湊型輸電(dian)(dian)線(xian)路建設(she)提供了技術(shu)(shu)依據，對加快(kuai)西(xi)北750千伏電(dian)(dian)網(wang)建設(she)、提高電(dian)(dian)網(wang)安全(quan)經濟運行水(shui)平具(ju)有重要意義，建議盡快(kuai)推廣應用(yong)。

　　針對電(dian)壓等級高、海(hai)拔(ba)高、系統復(fu)雜（包含大規(gui)模(mo)風(feng)電(dian)場、可控高抗、串補等）、線路(lu)較長(chang)（1200千米）等特點，開展750千伏(fu)(fu)緊湊型(xing)關(guan)鍵(jian)技術(shu)研(yan)(yan)(yan)究(jiu)在國(guo)(guo)際上(shang)尚屬首(shou)次。該項(xiang)目(mu)列入國(guo)(guo)家電(dian)網公司2007年(nian)(nian)重點科技項(xiang)目(mu)，由(you)西北電(dian)網公司牽頭組織(zhi)，9家科研(yan)(yan)(yan)單(dan)位共同(tong)參加，項(xiang)目(mu)研(yan)(yan)(yan)究(jiu)歷時近1年(nian)(nian)半，經過相關(guan)單(dan)位通力合(he)作、配合(he)研(yan)(yan)(yan)究(jiu)，克(ke)服(fu)許多重大技術(shu)挑戰和問題，全面(mian)完成了研(yan)(yan)(yan)究(jiu)任務(wu)，使我國(guo)(guo)成為掌(zhang)握高海(hai)拔(ba)地(di)區750千伏(fu)(fu)同(tong)塔雙(shuang)回(hui)(hui)緊湊型(xing)交(jiao)流輸(shu)電(dian)關(guan)鍵(jian)技術(shu)的唯(wei)一國(guo)(guo)家。應用這一研(yan)(yan)(yan)究(jiu)成果，2009年(nian)(nian)1月9日，國(guo)(guo)內首(shou)條750千伏(fu)(fu)同(tong)塔雙(shuang)回(hui)(hui)輸(shu)變電(dian)工程蘭州(zhou)東(dong)～平涼～乾縣工程全線架通，實現了西北750千伏(fu)(fu)電(dian)網裝備技術(shu)水平上(shang)臺階。

　　按照特(te)高壓電(dian)(dian)(dian)(dian)(dian)(dian)網發(fa)展(zhan)(zhan)理(li)念，西(xi)(xi)(xi)北(bei)(bei)電(dian)(dian)(dian)(dian)(dian)(dian)網公(gong)(gong)司加(jia)快750千(qian)伏(fu)電(dian)(dian)(dian)(dian)(dian)(dian)網建設，一(yi)個覆蓋(gai)國(guo)土面(mian)積(ji)三(san)分之(zhi)一(yi)、橫向跨越4000余(yu)公(gong)(gong)里、連(lian)(lian)接五省（區）和(he)西(xi)(xi)(xi)藏的超大(da)型750千(qian)伏(fu)送端電(dian)(dian)(dian)(dian)(dian)(dian)網即將(jiang)形(xing)成，并與未來“三(san)華(hua)”電(dian)(dian)(dian)(dian)(dian)(dian)網相(xiang)連(lian)(lian)。電(dian)(dian)(dian)(dian)(dian)(dian)網發(fa)展(zhan)(zhan)方式轉變(bian)，電(dian)(dian)(dian)(dian)(dian)(dian)網全面(mian)快速(su)發(fa)展(zhan)(zhan)，迫(po)切(qie)需要(yao)科(ke)技(ji)(ji)創新的支撐(cheng)。西(xi)(xi)(xi)北(bei)(bei)電(dian)(dian)(dian)(dian)(dian)(dian)網公(gong)(gong)司貫徹(che)“一(yi)流四大(da)”科(ke)技(ji)(ji)發(fa)展(zhan)(zhan)戰略，圍繞(rao)750千(qian)伏(fu)電(dian)(dian)(dian)(dian)(dian)(dian)網建設發(fa)展(zhan)(zhan)、大(da)電(dian)(dian)(dian)(dian)(dian)(dian)網安全穩定運(yun)(yun)行(xing)，加(jia)大(da)重(zhong)點領域科(ke)技(ji)(ji)投入(ru)，攻克關(guan)鍵技(ji)(ji)術(shu)難題，為建設運(yun)(yun)行(xing)750千(qian)伏(fu)主網架(jia)提(ti)供支撐(cheng)。2008年(nian)，9項科(ke)技(ji)(ji)成果獲(huo)國(guo)家(jia)電(dian)(dian)(dian)(dian)(dian)(dian)網公(gong)(gong)司、陜西(xi)(xi)(xi)省科(ke)技(ji)(ji)進(jin)步獎(jiang)項，獲(huo)獎(jiang)數量為歷年(nian)之(zhi)最(zui)；專利(li)申報實(shi)現歷史性(xing)突破(po)，獲(huo)得國(guo)家(jia)專利(li)授權26項。成立西(xi)(xi)(xi)北(bei)(bei)風(feng)(feng)電(dian)(dian)(dian)(dian)(dian)(dian)研(yan)究(jiu)中心，舉(ju)辦全國(guo)性(xing)風(feng)(feng)電(dian)(dian)(dian)(dian)(dian)(dian)技(ji)(ji)術(shu)論(lun)壇，開展(zhan)(zhan)調度測風(feng)(feng)網絡(luo)規劃研(yan)究(jiu)，在甘(gan)肅(su)酒(jiu)泉建成投運(yun)(yun)了3基用(yong)于電(dian)(dian)(dian)(dian)(dian)(dian)網調度的示(shi)范測風(feng)(feng)塔(ta)，電(dian)(dian)(dian)(dian)(dian)(dian)網調度測風(feng)(feng)網絡(luo)進(jin)入(ru)實(shi)際應用(yong)階(jie)段，為推動西(xi)(xi)(xi)北(bei)(bei)風(feng)(feng)電(dian)(dian)(dian)(dian)(dian)(dian)規模(mo)發(fa)展(zhan)(zhan)奠定了基礎(chu)。