文章來源：北極星電力(li)新聞網 發布(bu)時間(jian)：2010-07-01
6月26日，張南至(zhi)門頭溝500千伏(fu)線路(lu)工(gong)(gong)程順利(li)完成啟動投產(chan)工(gong)(gong)作(zuo)。該(gai)工(gong)(gong)程于2008年8月開(kai)工(gong)(gong)建(jian)(jian)設，新建(jian)(jian)同(tong)塔雙(shuang)回線路(lu)2×84.14公(gong)里。該(gai)工(gong)(gong)程的(de)(de)建(jian)(jian)設投產(chan)，可(ke)以滿足(zu)張家口地(di)區的(de)(de)電(dian)(dian)(dian)力需求，為解開(kai)張家口地(di)區電(dian)(dian)(dian)磁環網創造(zao)條件，增加張家口南部220千伏(fu)電(dian)(dian)(dian)網供(gong)電(dian)(dian)(dian)可(ke)靠(kao)性(xing)；同(tong)時使得北(bei)京(jing)環網向西北(bei)方向擴(kuo)至(zhi)張家口南，從而形成了京(jing)津(jin)冀(ji)500千伏(fu)西部大環網，有利(li)于減小北(bei)京(jing)環網短(duan)路(lu)電(dian)(dian)(dian)流水(shui)平，提(ti)高整個京(jing)津(jin)冀(ji)電(dian)(dian)(dian)網的(de)(de)供(gong)電(dian)(dian)(dian)可(ke)靠(kao)性(xing)。