The reporter learned from the State Grid Corporation on the 18th that the State Grid will fully build a strong and smart grid in 2020. What will this bring?
It is understood that there is no unified definition of smart grid at home and abroad. However, it is not difficult to find the common characteristics of smart grids in various countries: grids are more interactive, safer, power quality is higher, adaptability is stronger, and operation efficiency is higher...
At present, the tension and contradiction of coal and electricity transportation in my country still exist, and the problem of "bottleneck" in the export of hydropower in Southwest China, Inner Mongolia and Northwest China has become increasingly prominent. According to Liu Zhenya, general manager of the State Grid Corporation of China, my country urgently needs to build a "strong and smart grid" in order to transform the development mode of power grids and achieve coordinated development of power grids at all levels. Electric Winch Mill
Liu Zhenya said that building a strong smart grid and developing UHV are the top priorities. UHV energy can transport energy resources to destinations on a large scale and long distances, which is a fundamental solution to solve the deep-seated contradictions between energy and power development.
According to reports, "UHV AC transmission key technology, complete sets of equipment and engineering applications" won the special prize of the 2012 National Science and Technology Progress Award on the 18th. my country is the first and only country in the world that has successfully mastered and practically applied this technology.
The State Grid 2013 Work Annual Meeting held a few days ago made specific arrangements for the development of UHV: It is planned that by 2015, 2017 and 2020, my country will build "two verticals and two horizontals", "three verticals and three horizontals" and "five verticals" respectively. Wuheng" UHV "Sanhua" synchronous power grid, and 27 UHV DC projects will be completed by 2020.
According to reports, for a strong smart grid, building a distribution network is the foundation. The construction of my country's distribution network is lagging behind, and the problems are accumulating over time. It is urgent to speed up the upgrading and transformation to meet the rapid development of urbanization. According to reports, by 2015, the State Grid will basically solve the weak connection between the county power grid and the main grid, as well as the problems of "stuck neck" and "low voltage" in power supply; by 2020, a modern distribution network with perfect structure, leading technology, efficient interaction, flexibility and reliability will be built in an all-round way. , the reliability rate and voltage qualification rate of power supply in key cities have reached the international advanced level.
"Intelligence is the development direction of the future power grid." Liu Zhenya said that the comprehensive upgrade of the traditional power grid to the smart grid has become inevitable. State Grid will speed up the development and construction of a new generation of intelligent substations, promote intelligent line monitoring systems, intelligent dispatching control systems, and intelligent interactive power equipment, build a large-capacity backbone optical communication transmission network and an efficient information business network that runs through various fields, and speed up all aspects of the power grid. The intelligent upgrading and transformation of the power grid will comprehensively improve the intelligent level of the power grid.
At the same time, State Grid has set specific goals for building a strong and smart grid by 2015 and 2020. According to the goal, by 2015, my country will build "two vertical and two horizontal" UHV AC and 7-circuit UHV DC. The UHV and cross-regional power transmission capacity will reach 210 million kilowatts, ensuring that 350 million kilowatts of clean energy will be sent and consumed. Basically solve the problem of electricity consumption of the population without electricity in the operating area.
By 2020, my country will fully build a strong and smart grid. "Sanhua" UHV synchronous power grid forms the "five vertical and five horizontal" main grid. The size of the grid has more than doubled from 2010. The ultra-high voltage and cross-regional power transmission capacity will reach 450 million kilowatts, ensuring the transmission and consumption of 550 million kilowatts of clean energy. The intelligent level of the power grid is leading in the world, and the dispatching operation of the large power grid has reached the international advanced level.
Let’s imagine: At that time, the power generation end can improve the power generation efficiency and improve the ability to accept clean energy; the loss of the transmission line is reduced and the efficiency is improved; the power distribution end of thousands of households, the smart meter can feed back the electricity consumption information to the user, and the people will use electricity. Realize intelligent interaction and green energy saving...
