" We must not only increases exponentially with the development of renewable energy capacity, but also to build a stronger, more intelligent grid. " August 5th in Indiana, Northern Star Co, the United States President Obama said.

The international financial crisis has not yet gone, which industries will become the next wave of economic growth point? Obama focused on new energy and intelligent power grid construction and other fields.

While in America the strong smart grid plan surfaced, thousands of miles away in China, the strong smart grid research and development already like a raging fire.

China walked in front of the world

In mid July, the China State Grid Corp to two American guests -- the United States Secretary of Commerce Luo Jiahui and won the Nobel Prize in physics for the United States Secretary of energy Zhu Diwen. The United States minister to attract two is Chinese in strong smart grid and UHV transmission technology development.

China to build strong smart grid is in UHV power network as the backbone network, through advanced technology and control equipment to realize the method, safe, efficient operation of the grid. It can not only reduce the long distance transmission loss, but also conducive to wind power, solar power and other intermittent power grid using.

China is building a strong smart grid pioneer. In order to solve the problem of Chinese energy distribution and main consumption is inconsistent and renewable energy development, in recent years, China State Grid Corp have been working to build with informatization, automation, interactive features of the unity of the strong smart grid.

In May this year, China State Grid Corp general manager Liu Zhenya said, will be in phases to promote strong smart grid development, to 2020, will be fully built unified strong smart grid.

The smart grid is not a Chinese in. In the United States this year, President Obama took office after that puts forward to want to build smart grid. However, when the United States the smart grid is different in China, which focuses on the development of renewable energy and distributed power grid technology; at the same time, the development of intelligent electric meter, so that consumers can according to their own needs in different periods using electricity price.

However, according to the China State Grid Corp, the China State Grid Corp after the visit, Luo Jiahui said, the United States very much agree with the China State Grid Corp of smart grid development process are presented in the standard, strengthen the planning, information technology as a basis, pay attention to interactive objectives and principles, look forward to the China State Grid Corp in the field to continue to play a leading role.

Subsequently, in a speech on August 5th, Obama puts forward clearly, should build an achievable power in both West and east of the new intelligent power grid transmission. Obama said, " for a long time, we in the field not as innovative, and China, Japan and other countries have been far ahead. "

" Obama puts forward to want to build at a distance of about 4500 km on the East and west coasts transmission power of smart grid, and emphasizes the ' stronger, more intelligent, this shows that the United States ' in the concept of smart grid construction has China and similar, the United States to build will be similar to the one China a wide range of strong smart grid. " China State Grid Corp of Beijing economic and Technology Research Institute Vice President Hu Zhaoguang said.

Long-term since, we in the major scientific and technological projects often only on the West follow in sb.'s footsteps, and this time, China walked in front of the world.

The new energy revolution force intelligent power grid

Investment of 1500000000000 yuan to 1800000000000 yuan, in the coastal construction 3000-5000 offshore artificial island, building on 1200015000 of superconducting generator, so it can be formed more than 400000000 kilowatts of wind power installed capacity, equivalent to half of the installed capacity of China existing ... ...

This is the Chinese Academy of Sciences, Professor, famous expert Wu Jiandong energy for the development of offshore wind power better vision. In addition to offshore wind power, Professor Wu also hope that the development of the Tibetan Plateau and the desert region of solar, through large-scale development of these renewable energy, we can take time for depletion of mineral the sources of energy will be brought by the crisis.

However, these beautiful ideas to reality, there is a necessary premise: wind and solar power to use of the internet. However, with the current technical conditions, wind power, solar power and other intermittent energy use on a large scale, will cause a serious impact on power grid, grid security.

Only one way out: building a strong, strong, powerful, efficient, flexible, interactive smart grid. Only building the strong smart grid, in order to achieve renewable energy intensive development, long-distance transmission and efficient use, all kinds of distributed power supply, energy storage and power facilities net access standard and operation of intelligent control.

" The smart grid is completed, consumers can be electric power customers, but also can make their production of the wind energy, solar energy, hydrogen batteries, biogas and net use, thus becoming the supplier of small-sized electric power, this change will make human consumption energy way of historic revolution. " Wu Jiandong says.

Calculate according to concerning an expert, to 2020, Chinese renewable energy installed capacity will reach 570000000 kilowatts, accounting for 35% of total installed capacity; a year can reduce the coal consumption of 4.7 tons of standard coal, 13.8 tons of carbon dioxide emission reduction.

In 2020, it will also be a China State Grid Corp planning be accomplished when strong smart grid. China State Grid Corp director Ge Zhengxiang said: " at the appointed time, network optimization will significantly enhance the ability to allocate resources, clean energy installed ratio reached 35%, distributed power supply to achieve ' plug-and-play ', smart meter Universal application. "

" Integration or transform the traditional power flow, its essence is more effective in recombinant human energy system, basic human production mode transformation. Interactive intelligent electricity grid system is reshaping the global crisis of human energy efficiency best shortcut. " Wu Jiandong thinks, "the global economy is facing a power system to maximize the benefits of the historical opportunity, who mastered the intelligent interactive network, who will dominate the next generation global energy strategy development ability. It is with innovation of science and technology reconstruction of international division of labor is the largest peace dividend. China must have this commanding elevation, also will have the commanding elevation. "

UHV technology to boost the development of smart power grids

" The Chinese smart grid is to intelligence and technology as the basis, fully embodied in the generation, transmission, substation, distribution, electricity and scheduling 6 links. " Ge Zhengxiang expresses, Chinese smart grid is a strong power grid, in which, with long distance, large capacity, low loss of efficacy of the special high-voltage power grid technology, will become the core.

Ultra high voltage power grid is a 1000000 volt AC and the positive and negative 800000 volt DC power transmission network. This is the Chinese strong smart grid foundation. Ultra high voltage power grid with long distance, large power transmission capacity, is conducive to a wider range of optimal allocation of energy resources.

1000000 kV transmission line natural transmission power of about 500000 kV transmission line 5 times, the resistance loss of about 500000 kV Transmission Line 1 / 4, can save the line corridor land resources of about 2 / 3 ... ...

" China's energy resources and productivity of reverse distribution, coal resources reserves in the 76% distribution in the western and northern regions, 80% of the distribution of water resource in the western region, but more than 75% of the energy demand is concentrated in the eastern and central regions. Therefore the use of ultra high voltage transmission technology, to improve nationwide power resource to optimize configuration ability has become a pressing matter of the moment. " State Grid news spokesman Lu Jian said.

In January of this year, China's own R & D, design and construction of the million volt AC power transmission project -- Jindongnan - Nanyang - Jingmen UHV pilot demonstration project was formally put into operation, marking the Chinese successfully mastered the world's most advanced UHV construction core technology.

According to the national grid next planning, to the "Twelfth Five-Year Plan " period, the state power grid will be built " two vertical and two horizontal " special high-voltage backbone network, North Shaanxi, Southeast of Shanxi coal base power delivery to central China, East China region, the west power to East China, North China, southwest water and electricity to central China, East China will area.

At present, the world only 1000000 volt high voltage technology development in china. " The United States of America next to engage in more than 4000 km of transmission network, it may also choose to UHV technology, because want to realize long distance transmission, ultra-high voltage is the most economic. " Hu Zhaoguang says.

Source: Xinhua news agency, the central government portal