免费菠萝视频app下载

3月(yue)29日，由南方電網(wang)公司投資建(jian)設的(de)烏東德電站送(song)電廣(guang)東廣(guang)西特(te)(te)高壓(ya)(ya)多端(duan)直(zhi)流(liu)示范工(gong)(gong)(gong)程(cheng)(cheng)獲國(guo)家發(fa)展改革委核準。該工(gong)(gong)(gong)程(cheng)(cheng)是(shi)國(guo)家電力(li)發(fa)展“十三五”規劃要(yao)求(qiu)的(de)跨省(sheng)區輸(shu)電重(zhong)點工(gong)(gong)(gong)程(cheng)(cheng)和國(guo)家重(zhong)大創新示范工(gong)(gong)(gong)程(cheng)(cheng)，建(jian)成后將創造多項世(shi)界第一：世(shi)界上(shang)容量最(zui)大的(de)特(te)(te)高壓(ya)(ya)多端(duan)直(zhi)流(liu)輸(shu)電工(gong)(gong)(gong)程(cheng)(cheng)、世(shi)界上(shang)首個特(te)(te)高壓(ya)(ya)多端(duan)混合直(zhi)流(liu)工(gong)(gong)(gong)程(cheng)(cheng)、首個特(te)(te)高壓(ya)(ya)柔(rou)性直(zhi)流(liu)換流(liu)站工(gong)(gong)(gong)程(cheng)(cheng)、首個具(ju)備架空線(xian)路直(zhi)流(liu)故障自清除能(neng)力(li)的(de)柔(rou)性直(zhi)流(liu)輸(shu)電工(gong)(gong)(gong)程(cheng)(cheng)。

工程(cheng)擬建設±800千伏特高壓三端(duan)(duan)直(zhi)流，輸送(song)容量800萬(wan)千瓦(wa)，向廣(guang)(guang)(guang)東(dong)送(song)電(dian)500萬(wan)千瓦(wa)，向廣(guang)(guang)(guang)西(xi)送(song)電(dian)300萬(wan)千瓦(wa)，送(song)端(duan)(duan)為云南昆(kun)明祿勸(quan)縣(xian)，受端(duan)(duan)為廣(guang)(guang)(guang)東(dong)惠州(zhou)龍門縣(xian)和廣(guang)(guang)(guang)西(xi)柳州(zhou)鹿寨縣(xian)，線路全長約為1489公里(li)，途經(jing)云南、貴(gui)州(zhou)、廣(guang)(guang)(guang)西(xi)、廣(guang)(guang)(guang)東(dong)四省（區(qu)）。工程(cheng)計(ji)劃于2020年(nian)投(tou)產送(song)電(dian)，2021年(nian)全部建成投(tou)產，屆時可增加800萬(wan)千瓦(wa)的云南清(qing)潔(jie)水電(dian)送(song)電(dian)廣(guang)(guang)(guang)東(dong)、廣(guang)(guang)(guang)西(xi)，年(nian)送(song)電(dian)量超過320億千瓦(wa)時，每(mei)年(nian)可減少煤(mei)炭消耗920萬(wan)噸、二氧化碳排放2450萬(wan)噸，對進一步促進云南水電(dian)等清(qing)潔(jie)能源消納、保(bao)障廣(guang)(guang)(guang)東(dong)廣(guang)(guang)(guang)西(xi)電(dian)力(li)供應、保(bao)護(hu)生態環(huan)境、助(zhu)力(li)打(da)好污染防治攻堅戰具有重(zhong)要意義。

作為(wei)世界首個(ge)(ge)特高(gao)壓大容量(liang)多端(duan)混(hun)合直(zhi)流(liu)(liu)(liu)(liu)輸電工程(cheng)(cheng)，其容量(liang)超過現有(you)世界上(shang)最大容量(liang)為(wei)600萬(wan)千(qian)瓦的特高(gao)壓多端(duan)直(zhi)流(liu)(liu)(liu)(liu)工程(cheng)(cheng)——印(yin)度東北(bei)—阿格(ge)拉輸電線(xian)路工程(cheng)(cheng)。多端(duan)直(zhi)流(liu)(liu)(liu)(liu)相對常規直(zhi)流(liu)(liu)(liu)(liu)，打破線(xian)路僅連(lian)接(jie)兩點的固有(you)模式，形成一條線(xian)上(shang)多點連(lian)接(jie)布局，減(jian)少線(xian)路建(jian)設里程(cheng)(cheng)、換流(liu)(liu)(liu)(liu)站(zhan)點數量(liang)等，提升(sheng)經濟性(xing)(xing)。“混(hun)合”則體現在，其送端(duan)采用(yong)常規直(zhi)流(liu)(liu)(liu)(liu)、受端(duan)采用(yong)柔(rou)性(xing)(xing)直(zhi)流(liu)(liu)(liu)(liu)技術，工程(cheng)(cheng)特高(gao)壓柔(rou)性(xing)(xing)直(zhi)流(liu)(liu)(liu)(liu)換流(liu)(liu)(liu)(liu)站(zhan)建(jian)有(you)2個(ge)(ge)，分別(bie)位于兩個(ge)(ge)受端(duan)處，架空線(xian)路直(zhi)流(liu)(liu)(liu)(liu)故障自清除能力(li)與柔(rou)性(xing)(xing)直(zhi)流(liu)(liu)(liu)(liu)系統(tong)的應(ying)用(yong)，能提升(sheng)電網運行的安(an)全(quan)性(xing)(xing)、穩定(ding)性(xing)(xing)、靈活性(xing)(xing)。

據了(le)解(jie)，工程前(qian)期工作在同類工程中最為復(fu)雜，技術(shu)(shu)方(fang)(fang)案論證首次開(kai)展了(le)特(te)(te)高(gao)壓(ya)多端直(zhi)流、特(te)(te)高(gao)壓(ya)柔(rou)性(xing)(xing)直(zhi)流、特(te)(te)高(gao)壓(ya)常(chang)規(gui)直(zhi)流與柔(rou)性(xing)(xing)直(zhi)流混合(he)系統、特(te)(te)高(gao)壓(ya)柔(rou)性(xing)(xing)直(zhi)流的長距離架空線(xian)路應(ying)用等創新(xin)工作，經多方(fang)(fang)反(fan)復(fu)研究(jiu)論證得以(yi)通過。工程具有(you)極(ji)大(da)示范意義，有(you)利(li)于我(wo)國占(zhan)領特(te)(te)高(gao)壓(ya)多端、柔(rou)性(xing)(xing)直(zhi)流輸電(dian)技術(shu)(shu)制高(gao)點，提升(sheng)遠距離、大(da)容量、多電(dian)源(yuan)狀況(kuang)下電(dian)網(wang)運行的安全穩定和經濟性(xing)(xing)，從(cong)長遠看將為未來(lai)大(da)規(gui)模(mo)可再生能源(yuan)基地(di)的開(kai)發與并網(wang)提供強有(you)力的技術(shu)(shu)支(zhi)撐。

【責任編輯：王莉】