我国东北、华北、西北、华东、华中五大跨省电网已进入国际先进行列。 我国五大跨省电网,输电量大,覆盖我国几大重要经济区域。过去五大跨省电网设备陈旧、控制手段落后,输电能力低,在国际上只属于技术水平低的中小型电网,制约了国民经济的发展。十一届三中全会以来,我国电力工业推行一系 China’s Northeast, North, Northwest, East and Central China Power Grids have entered the international advanced ranks. China’s five major trans-provincial power grids have large transmission capacity and cover several major economic regions in China. The grid equipment of the past five major trans-provincial power grids is outdated, the control means are backward, and the transmission capacity is low. In the international community, they are only small and medium-sized power grids with a low level of technology, which restricts the development of the national economy. Since the Third Plenary Session of the Eleventh Central Committee, China’s Electric Power Industry has implemented a series of