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，張南至門(men)頭溝500千(qian)伏線(xian)(xian)路工(gong)(gong)(gong)程順(shun)利完成(cheng)啟(qi)動投產工(gong)(gong)(gong)作。該工(gong)(gong)(gong)程于(yu)2008年(nian)8月開工(gong)(gong)(gong)建(jian)(jian)設，新(xin)建(jian)(jian)同塔雙回(hui)線(xian)(xian)路2×84.14公里。該工(gong)(gong)(gong)程的建(jian)(jian)設投產，可以滿足張家(jia)(jia)口(kou)(kou)(kou)地(di)(di)區(qu)的電力需求(qiu)，為解開張家(jia)(jia)口(kou)(kou)(kou)地(di)(di)區(qu)電磁(ci)環網(wang)創造(zao)條件，增加張家(jia)(jia)口(kou)(kou)(kou)南部220千(qian)伏電網(wang)供(gong)電可靠性；同時使得北京(jing)(jing)環網(wang)向西北方向擴至張家(jia)(jia)口(kou)(kou)(kou)南，從而形成(cheng)了(le)京(jing)(jing)津(jin)冀500千(qian)伏西部大環網(wang)，有利于(yu)減(jian)小北京(jing)(jing)環網(wang)短路電流水平，提(ti)高整個京(jing)(jing)津(jin)冀電網(wang)的供(gong)電可靠性。