免费菠萝视频app下载

3月29日，由(you)南(nan)方(fang)電(dian)網公(gong)司投資建(jian)(jian)設的烏東德電(dian)站(zhan)(zhan)送電(dian)廣東廣西特高(gao)壓(ya)(ya)(ya)多端(duan)直(zhi)(zhi)(zhi)流(liu)示范(fan)工(gong)(gong)程(cheng)(cheng)(cheng)獲(huo)國(guo)家發展(zhan)改革委核準。該(gai)工(gong)(gong)程(cheng)(cheng)(cheng)是國(guo)家電(dian)力(li)(li)發展(zhan)“十(shi)三五”規劃(hua)要求的跨省區輸(shu)電(dian)重點(dian)工(gong)(gong)程(cheng)(cheng)(cheng)和國(guo)家重大創(chuang)新示范(fan)工(gong)(gong)程(cheng)(cheng)(cheng)，建(jian)(jian)成(cheng)后將創(chuang)造多項世(shi)界(jie)(jie)第(di)一：世(shi)界(jie)(jie)上(shang)容量最大的特高(gao)壓(ya)(ya)(ya)多端(duan)直(zhi)(zhi)(zhi)流(liu)輸(shu)電(dian)工(gong)(gong)程(cheng)(cheng)(cheng)、世(shi)界(jie)(jie)上(shang)首(shou)(shou)個(ge)特高(gao)壓(ya)(ya)(ya)多端(duan)混合直(zhi)(zhi)(zhi)流(liu)工(gong)(gong)程(cheng)(cheng)(cheng)、首(shou)(shou)個(ge)特高(gao)壓(ya)(ya)(ya)柔性(xing)直(zhi)(zhi)(zhi)流(liu)換流(liu)站(zhan)(zhan)工(gong)(gong)程(cheng)(cheng)(cheng)、首(shou)(shou)個(ge)具備架(jia)空線(xian)路直(zhi)(zhi)(zhi)流(liu)故(gu)障自清(qing)除(chu)能力(li)(li)的柔性(xing)直(zhi)(zhi)(zhi)流(liu)輸(shu)電(dian)工(gong)(gong)程(cheng)(cheng)(cheng)。

工程擬建設±800千(qian)(qian)伏特(te)高(gao)壓三端(duan)直流，輸(shu)送(song)(song)(song)容量800萬(wan)千(qian)(qian)瓦(wa)，向廣(guang)(guang)(guang)東送(song)(song)(song)電(dian)(dian)500萬(wan)千(qian)(qian)瓦(wa)，向廣(guang)(guang)(guang)西(xi)送(song)(song)(song)電(dian)(dian)300萬(wan)千(qian)(qian)瓦(wa)，送(song)(song)(song)端(duan)為(wei)云(yun)南(nan)昆(kun)明祿(lu)勸縣(xian)(xian)，受端(duan)為(wei)廣(guang)(guang)(guang)東惠州(zhou)龍(long)門(men)縣(xian)(xian)和廣(guang)(guang)(guang)西(xi)柳州(zhou)鹿寨縣(xian)(xian)，線路(lu)全長(chang)約為(wei)1489公里，途經云(yun)南(nan)、貴州(zhou)、廣(guang)(guang)(guang)西(xi)、廣(guang)(guang)(guang)東四省（區(qu)）。工程計(ji)劃于2020年(nian)投產(chan)送(song)(song)(song)電(dian)(dian)，2021年(nian)全部(bu)建成投產(chan)，屆(jie)時(shi)可增加(jia)800萬(wan)千(qian)(qian)瓦(wa)的云(yun)南(nan)清(qing)(qing)潔(jie)水電(dian)(dian)送(song)(song)(song)電(dian)(dian)廣(guang)(guang)(guang)東、廣(guang)(guang)(guang)西(xi)，年(nian)送(song)(song)(song)電(dian)(dian)量超過320億千(qian)(qian)瓦(wa)時(shi)，每年(nian)可減少煤炭消耗(hao)920萬(wan)噸(dun)、二(er)氧(yang)化碳排放2450萬(wan)噸(dun)，對進一步(bu)促進云(yun)南(nan)水電(dian)(dian)等(deng)清(qing)(qing)潔(jie)能源消納、保(bao)障(zhang)廣(guang)(guang)(guang)東廣(guang)(guang)(guang)西(xi)電(dian)(dian)力(li)供應、保(bao)護生態環境、助力(li)打好(hao)污染防治攻堅戰具有重(zhong)要意義。

作(zuo)為世界首個特高壓(ya)大容(rong)量(liang)(liang)(liang)(liang)多(duo)端(duan)混合(he)(he)直流(liu)輸(shu)電(dian)(dian)工(gong)程(cheng)，其容(rong)量(liang)(liang)(liang)(liang)超(chao)過現(xian)有(you)世界上(shang)最大容(rong)量(liang)(liang)(liang)(liang)為600萬(wan)千瓦的(de)特高壓(ya)多(duo)端(duan)直流(liu)工(gong)程(cheng)——印度東北(bei)—阿格拉輸(shu)電(dian)(dian)線路(lu)工(gong)程(cheng)。多(duo)端(duan)直流(liu)相對常規直流(liu)，打破線路(lu)僅連接(jie)兩點(dian)的(de)固有(you)模式(shi)，形成(cheng)一條線上(shang)多(duo)點(dian)連接(jie)布局，減少(shao)線路(lu)建(jian)設里程(cheng)、換(huan)流(liu)站(zhan)點(dian)數量(liang)(liang)(liang)(liang)等，提升(sheng)經濟性(xing)(xing)。“混合(he)(he)”則體現(xian)在，其送端(duan)采(cai)用常規直流(liu)、受端(duan)采(cai)用柔(rou)性(xing)(xing)直流(liu)技術，工(gong)程(cheng)特高壓(ya)柔(rou)性(xing)(xing)直流(liu)換(huan)流(liu)站(zhan)建(jian)有(you)2個，分別(bie)位于兩個受端(duan)處，架空(kong)線路(lu)直流(liu)故障自清除能力與柔(rou)性(xing)(xing)直流(liu)系統的(de)應用，能提升(sheng)電(dian)(dian)網運行(xing)的(de)安全性(xing)(xing)、穩定(ding)性(xing)(xing)、靈(ling)活性(xing)(xing)。

據了解，工程前(qian)期工作(zuo)在同類工程中最為復雜(za)，技術(shu)方(fang)案論(lun)證首次開展了特高壓(ya)多端直(zhi)(zhi)流、特高壓(ya)柔性(xing)直(zhi)(zhi)流、特高壓(ya)常(chang)規直(zhi)(zhi)流與(yu)柔性(xing)直(zhi)(zhi)流混(hun)合系統(tong)、特高壓(ya)柔性(xing)直(zhi)(zhi)流的長距(ju)離架空線路(lu)應用等(deng)創(chuang)新(xin)工作(zuo)，經多方(fang)反(fan)復研究論(lun)證得以通過(guo)。工程具有(you)極大(da)示(shi)范意義，有(you)利于我(wo)國占領特高壓(ya)多端、柔性(xing)直(zhi)(zhi)流輸電技術(shu)制高點，提升遠距(ju)離、大(da)容(rong)量(liang)、多電源(yuan)狀況下(xia)電網(wang)運行的安全(quan)穩(wen)定和(he)經濟性(xing)，從(cong)長遠看將為未(wei)來(lai)大(da)規模可(ke)再(zai)生能源(yuan)基地的開發與(yu)并網(wang)提供(gong)強有(you)力的技術(shu)支撐。

【責任編輯：王莉】