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6月29日，世界首(shou)個具有網絡特性(xing)的(de)柔(rou)性(xing)直流電網工(gong)程，張北(bei)柔(rou)性(xing)直流電網試驗(yan)示范工(gong)程投運，張北(bei)地區的(de)新能(neng)源(yuan)成(cheng)功接入(ru)北(bei)京(jing)電網、送至2022年(nian)北(bei)京(jing)冬奧場館。

張北柔直工(gong)(gong)(gong)程(cheng)(cheng)(cheng)是世界(jie)上電(dian)壓(ya)等級最(zui)高、輸送容量最(zui)大(da)的柔性直流工(gong)(gong)(gong)程(cheng)(cheng)(cheng)，也是國家電(dian)網有限(xian)公(gong)(gong)司(si)深(shen)入貫徹黨中央、國務(wu)院決(jue)策(ce)部署、服務(wu)能源清(qing)潔低碳發(fa)展的重大(da)工(gong)(gong)(gong)程(cheng)(cheng)(cheng)。工(gong)(gong)(gong)程(cheng)(cheng)(cheng)額定電(dian)壓(ya)±500千伏，線(xian)路全長666千米，新建張北、康保、豐寧和(he)北京(jing)四座(zuo)換(huan)流站，總換(huan)流容量900萬千瓦。此項工(gong)(gong)(gong)程(cheng)(cheng)(cheng)也是國網冀(ji)北電(dian)力有限(xian)公(gong)(gong)司(si)服務(wu)綠色冬奧的“涉奧六大(da)工(gong)(gong)(gong)程(cheng)(cheng)(cheng)”之(zhi)一。該工(gong)(gong)(gong)程(cheng)(cheng)(cheng)于(yu)2017年(nian)12月獲(huo)得核準，2018年(nian)2月開工(gong)(gong)(gong)建設。