Characteristics and development tendency of main framework in the future for regional power grid in China

The background of regional power grid planning and its important basic condition for the Northeast, North China, East China, and Northwest regional power grid in China were introduced. This power grid planning must face to the external environment including how to insist the unified and scientific planning, and coordinative development for power grid and power source, must set up the idea of regional power grid planning guided by nation-wide power grid interconnection planning, and the provincial-level power grid planning guided by regional power grid planning. The development of power grid is how to satisfy the needs of establishing competitive power market, and how to make good power grid planning under the condition of the serious disequilibrium of power supply and demand. The way of development, characteristics of structure and its development tendency of main framework for each regional power grid were analyzed. The development of regional power grid should firstly meet the guidance of nation-wide power grid interconnection strategy, inter-regional power flow and inter-regional interconnection mode. Secondly, the verification of the schemes for the development of regional main framework was carried out, and the development tendency of main framework, the key ring power grid of receiving end and transmission channel were described according to the recommended scheme. Some problems needed to solve for power grid development were presented from technical points of view.