“十一五”期间,西北“三型”送端电网实现了跨越式发展。以750千伏电网为骨干网架,覆盖西北五省(区)主要能源基地、负荷中心的统一互联电网初步形成。截至2010年底,西北送端电网跨区输电容量达到611万千瓦。西北“外向型、送出型、规模型”坚强智能送端电网为跨地区电能交易工作奠定了物质基础。 “Eleventh Five-Year ” period, the northwest “three type ” sent to the end of the grid to achieve leapfrog development. 750 kV grid as the backbone grid, covering the five major energy bases in the five provinces (autonomous regions) in Northwest China. The unified interconnection power grid of load center is initially formed. By the end of 2010, the power transmission capacity in the northwest to the terminal grid reached 611 GW. Northwest “Export-oriented, sending type, size type ” Strong and smart sending-end power grid has laid a material foundation for trans-regional electricity trading.