文章來源(yuan)：中國能(neng)源(yuan)建設集(ji)團有限(xian)公司 發布(bu)時間：2017-11-09
11月3日，由中國能建(jian)江蘇(su)院承擔(dan)設(she)計(ji)的江蘇(su)蘇(su)州南(nan)部電網500千伏統一潮流控制器（英文簡稱“UPFC”）示范(fan)工(gong)(gong)程正式(shi)開工(gong)(gong)建(jian)設(she)。這是該院在2015年成(cheng)功設(she)計(ji)南(nan)京西環網220千伏UPFC示范(fan)工(gong)(gong)程的基礎上(shang)，向(xiang)世界上(shang)電壓等級最高、容(rong)量最大的UPFC工(gong)(gong)程發(fa)起的又一次成(cheng)功挑戰(zhan)。
隨(sui)著電(dian)網(wang)潮流的(de)涌(yong)動，如果某些區域用(yong)電(dian)激增，可能造(zao)成輸(shu)(shu)電(dian)線路的(de)超負荷運轉(zhuan)。UPFC就是(shi)通(tong)過(guo)控(kong)制(zhi)所(suo)有影響輸(shu)(shu)電(dian)線路潮流的(de)參數，為輸(shu)(shu)電(dian)通(tong)道(dao)加裝(zhuang)一套“智能交通(tong)導航儀”，疏導電(dian)力(li)“交通(tong)”，從而實(shi)現(xian)對電(dian)網(wang)潮流的(de)靈活、精準控(kong)制(zhi)，在現(xian)有網(wang)架基(ji)礎(chu)上保障電(dian)網(wang)安(an)全運行(xing)。
據悉，該工程之所以選址(zhi)蘇州(zhou)(zhou)(zhou)，是因為(wei)蘇州(zhou)(zhou)(zhou)南部(bu)電(dian)(dian)網(wang)的(de)±800千伏錦蘇直流特高壓輸電(dian)(dian)傳輸的(de)是來自(zi)四川錦屏(ping)的(de)清潔(jie)水(shui)電(dian)(dian)。由于水(shui)電(dian)(dian)季節(jie)性較強，導致該地存在(zai)(zai)著夏季直流雙(shuang)極(ji)閉(bi)鎖后應急拉限電(dian)(dian)多、冬季直流來電(dian)(dian)小(xiao)方式下(xia)受不滿(man)、動態無(wu)功(gong)支撐不足等(deng)問(wen)題。若采取新(xin)增(zeng)輸電(dian)(dian)通(tong)道、線路(lu)導線增(zeng)容等(deng)常規措(cuo)施，將帶來投資高、建(jian)設(she)(she)困難、安全風險大等(deng)缺陷(xian)，而在(zai)(zai)蘇州(zhou)(zhou)(zhou)南部(bu)電(dian)(dian)網(wang)試點建(jian)設(she)(she)的(de)500千伏UPFC應用不僅能夠解決上(shang)述電(dian)(dian)網(wang)問(wen)題，還能避免常規措(cuo)施所存在(zai)(zai)的(de)弊端。
該工(gong)(gong)(gong)程(cheng)(cheng)被列(lie)為國家電(dian)(dian)(dian)網公司2016年度五大重大示范(fan)工(gong)(gong)(gong)程(cheng)(cheng)之一(yi)，換流(liu)器(qi)容(rong)量達3×25萬千(qian)(qian)伏(fu)安(an)(an)，建成后將成為世界上(shang)電(dian)(dian)(dian)壓(ya)等(deng)級最高(gao)、容(rong)量最大的(de)UPFC工(gong)(gong)(gong)程(cheng)(cheng)，也是自南京西環網220千(qian)(qian)伏(fu)UPFC工(gong)(gong)(gong)程(cheng)(cheng)之后世界第二(er)個采(cai)用(yong)(yong)基于IGBT的(de)模塊化多(duo)電(dian)(dian)(dian)平(ping)換流(liu)器(qi)（MMC）的(de)UPFC工(gong)(gong)(gong)程(cheng)(cheng)，具(ju)有(you)可靠(kao)性(xing)高(gao)、損耗(hao)小、占地面積小、維(wei)護方(fang)便(bian)等(deng)諸(zhu)多(duo)優點，且工(gong)(gong)(gong)程(cheng)(cheng)采(cai)用(yong)(yong)的(de)設備、技術均由我(wo)國自主設計、研發和(he)建設。該工(gong)(gong)(gong)程(cheng)(cheng)將使蘇州(zhou)(zhou)電(dian)(dian)(dian)網消納清(qing)潔(jie)能源(yuan)的(de)能力(li)提升約120萬千(qian)(qian)瓦，同(tong)時將進(jin)一(yi)步提高(gao)蘇州(zhou)(zhou)南部(bu)500千(qian)(qian)伏(fu)電(dian)(dian)(dian)網對特高(gao)壓(ya)交直流(liu)來電(dian)(dian)(dian)的(de)承接(jie)能力(li)，有(you)力(li)地保障(zhang)區域(yu)性(xing)電(dian)(dian)(dian)網輸電(dian)(dian)(dian)能力(li)和(he)安(an)(an)全(quan)穩(wen)定水平(ping)，從而推動我(wo)國電(dian)(dian)(dian)網從傳統電(dian)(dian)(dian)網向安(an)(an)全(quan)、高(gao)效、經濟、清(qing)潔(jie)、互動現代電(dian)(dian)(dian)網的(de)升級和(he)跨越。