Itu recently published in the electric power industry "twelfth five-year" plan rolling research report, according to the report, to 2015, north China, east China, China formed in high voltage grid ZhuWangJia "three vertical and three horizontal".2020, our country will be built in high power grid with north China, east China, China as the center, northeast, northwest 750 kv uhv power grid as the sending, connecting each big coal base, large hydropower bases, big base for nuclear power, renewable energy base, the coordinated development of various grid strong smart grid.At the appointed time, north China, east China, China and Trinidad and Tobago high-voltage synchronous ZhuWangJia six "five longitudinal and transverse" grid formation.