China will vigorously build a main grid

According to reports, in 2020, China will build a UHV power grid in North China, East China, and Central China as its center, a northeast UHV power grid, and a 750 kV power grid in northwest China as the sending end, linking major coal and electric power bases, major hydropower bases, and large nuclear power bases. Large renewable energy bases, strong grids with coordinated development of all levels of power grids. The UHV synchronous network in North China, East China and Central China forms the main frame of “five vertical and six horizontal”.

As an important delivery network, Northwest China Power Grid will strengthen provincial links on the basis of the existing 750-kilovolt power grid structure during the “Twelfth Five-Year Plan” period, improve the exchange capacity of the power grid and resist severe faults, and ensure wind power and other renewable energy sources. Access and consumption. It is closely connected with the UHV power grids in North China, East China and Central China.

During the "Twelfth Five-Year Plan" period, China Southern Power Grid will focus on the construction of outflow DC projects for large power plants such as Nuozhadu and Xiluodu. In 2015, the main grid of the West Power Transmission Network in East China sent a “Nine to Eight” power transmission channel on the basis of “Five Straight and Eight Crossings” in 2010. Each province (Region) formed a strong backbone network of 500 kV to realize Hainan and the South. The main network is a 500 kV dual-circuit network, which strengthens the networking with Hong Kong and Macao SARs and ensures the reliable supply of Hong Kong and Macao power.

In addition, by 2015, the reliability of electricity supply to urban users in the country will reach 99.943% or more, and the reliability of electricity supply for rural users will exceed 99.765%. In 2020, the reliability rate of urban users' power supply will reach 99.955%, and the reliability of power supply for rural users will reach 99.810%.

According to the person in charge of the CEC, the development of intelligent power grids in China will be based on strong grids, supported by communication and information platforms, and will include intelligent power generation, transmission, substation, power distribution, and electricity consumption. And scheduling six major steps, covering all voltage levels. By the end of the "Twelfth Five-Year Plan," China's smart grid technology and key equipment will achieve major breakthroughs. The intelligent standards system will be basically perfected, and the grid intelligence will reach a higher level.