摘要
Northeast power grid, taking 220-kV and 500-kV trunk frame as a mainstay, may be divided into three parts by configuration. Its northern part consists of Hulun Buir and Heilongjiang power grids; the central part consists of Tongliao City, Xing＇an prefectural and Jilin provincial power grids; and the southern part consists of Chifeng City and Liaoning provincial grids.
