China leads the new trend of world electricity development with strong smart electricity
Beijing, August 10: "we should not only multiply the development capacity of renewable energy, but also build a stronger and smarter electricity." On August 5, U.S. President Barack Obama said at the Polaris company in Indiana
the international financial crisis is not far away, which industries can become the commanding heights of the next wave of economic growth? Obama has set his sights on the construction of new energy and smart electricity
when the strong smart electricity plan of the United States surfaced, the research and development of strong smart electricity had already been in full swing in China thousands of miles away
China is ahead of the world
in mid July, two American guests came to the national power company - U.S. Secretary of Commerce Gary Locke and U.S. Secretary of Energy Steven Chu, who won the Nobel Prize in physics. What attracted the two US ministers was China's development in smart power and UHV transmission technology
the strong smart electricity that China wants to build is the electricity that takes ultra-high voltage electricity as the backbone and realizes safe and efficient operation through advanced equipment technology and control methods. It can not only reduce the loss of long-distance transmission, but also facilitate the combined use of intermittent energy such as wind power and solar power
China is a pioneer in the construction of strong smart electricity. In order to solve the problems of the inconsistency between China's major energy distribution and major consumption areas and the development of renewable energy, in recent years, the State Grid Corporation of China has been striving to build a unified strong smart electricity with the characteristics of informatization, automation and interaction
in May this year, liuzhenya, general manager of State Grid Corporation of China, said that the development of strong smart electricity will be promoted in HRB400 6 (2) 5 stages, and by 2020, a unified strong smart electricity will be built in an all-round way
smart electricity is not made in China alone. In the United States, after taking office this year, President Obama proposed to build smart electricity. However, at that time, the smart electricity proposed by the United States was different from that proposed by China. Its focus was on the research and development of renewable energy and distributed power generation technology; At the same time, develop smart meters so that consumers can use electricity at different price periods according to their own needs
however, according to the State Grid Corporation of China, after visiting the State Grid Corporation of China, Locke said that the United States very much agrees with the goals and principles of unified standards, strengthened planning, based on information technology and focusing on interaction put forward by the State Grid Corporation of China in the process of developing smart electricity. It is expected that the surface damage caused by rough polishing is a secondary consideration factor, and the State Grid Corporation of China can continue to play a leading role in this field
then, in his speech on August 5, Obama clearly proposed to build a new smart electricity that can realize the transmission of electricity on both sides of the East and West. Obama admitted, "for a long time, we have not done anything in this innovative field, and China, Japan and other countries have been far ahead."
"Obama proposed to build a smart electricity that transmits electricity on the East and West banks about 4500 kilometers away, and emphasized 'stronger and smarter', which shows that the concept of the United States in the construction of smart electricity has been similar to China, and the United States will build a large-scale strong smart electricity similar to China." Hu Zhaoguang, vice president of Beijing Economic and Technological Research Institute of State Power Corporation, said
for a long time, we can only follow the West in major scientific and technological projects, and this time, China is ahead of the world
the new energy revolution forces the intellectualization of electricity
invest 1500 billion yuan to 1800 billion yuan to build 3000-5000 offshore artificial islands along the coast, on which 12000-15000 superconducting wind turbines are built. In this way, the installed capacity of wind power of more than 400million kW can be formed, which is equivalent to half of China's existing installed capacity...
this is the beautiful vision of Wu Jiandong, a professor of the Chinese Academy of Sciences and a famous energy expert, for the development of offshore wind power. In addition to offshore wind power, Professor Wu also hopes to develop solar energy in the Qinghai Tibet Plateau and desert areas. Through the large-scale development of these renewable energies, we can calmly cope with the crisis caused by the eventual depletion of mineral energy
however, there is a necessary premise for these beautiful ideas to become a reality: wind power and solar power should be used. However, with the current technical conditions, the large-scale utilization of intermittent energy such as wind power and solar power will have a serious impact on electricity and affect the safety of electricity
there is only one way out: build a strong, solid, powerful, interactive, efficient and convenient smart electricity. Only by building strong smart electricity can we realize the intensive development, long-distance transmission and efficient utilization of renewable energy, and realize the standardization of all kinds of distributed power sources, energy storage devices and electrical facilities and the intellectualization of power operation control
"after the completion of smart electricity, consumers can not only be power customers, but also make use of their own wind energy, solar energy, hydrogen batteries, biogas, etc., so as to become small power suppliers. This change will revolutionize the way human beings consume energy." Wu Jiandong said
according to relevant experts, by 2020, China's installed capacity of renewable energy will reach 570 million KW, accounting for 35% of the total installed capacity; It can reduce coal consumption by 470 million tons of standard coal and carbon dioxide emission by 1.38 billion tons every year
2020 will also be the year when the strong and intelligent radio and Television University planned by the State Grid Corporation of China will be completed. Ge Zhengxiang, director of the Research Office of State Grid Corporation of China, said: "at that time, the ability of optimizing the allocation of resources for electricity will be greatly improved, the installed proportion of clean energy will reach 35%, distributed power generation will achieve 'plug and play', and smart meters will be widely used."
"the essence of integrating or transforming traditional power processes is to more effectively reorganize human energy system and transform human basic production mode. Reshaping the global power system with intelligent interactive electricity is the best shortcut for mankind to improve energy efficiency in the era of crisis." Wu Jiandong believes that "major economies in the world are facing a historical opportunity to maximize the efficiency of the power system. Whoever has mastered intelligent interactive electricity will dominate the strategic development ability of the next generation of global energy. It is the biggest peace dividend of rebuilding the international division of labor with scientific and technological innovation. China must have this commanding height, and it must be able to have this commanding height in a country with a relatively strong shipbuilding industry in the world."
UHV technology promotes the construction of smart electricity
"China's smart electricity is based on intelligence and technology, which is comprehensively reflected in six links, including power generation, transmission, transformation, distribution, power consumption and dispatching." Ge Zhengxiang said that China's smart electricity is first and foremost a strong electricity, among which UHV technology with long-distance, large capacity and low loss efficiency will become the core link
UHV refers to 1000 kV AC and plus or minus 800 kV DC transmission networks. This is the foundation of strong smart electricity in China. UHV has long-distance and large-scale power transmission capacity, which is conducive to optimizing the allocation of energy resources in a wider range
the natural transmission power of 1000 kV transmission lines is about 5 times that of 500 kV transmission lines, and the resistance loss is about 1/4 of that of 500 kV transmission lines, About 2/3 of the land resources in the line corridor can be saved...
"China's energy resources and productivity are inversely distributed. 76% of the retained reserves of coal resources are distributed in the western and northern regions, 80% of the water energy resources are distributed in the western region, but more than 75% of the energy demand is concentrated in the eastern and central regions. Therefore, it is urgent to adopt UHV transmission technology to improve the ability to optimize the allocation of power resources nationwide." Lu Jian, a spokesman for State Grid, said
in January this year, China's self-developed, designed and constructed million volt AC power transmission and transformation project - Southeast Shanxi Nanyang Jingmen UHV test demonstration project was officially completed and put into operation, which marks that China has successfully mastered the world's most advanced UHV construction core technology
according to the next step plan of state power, by the early stage of the 12th Five Year Plan, state power will build "two vertical and two horizontal" UHV backbone power, which will transmit the power of coal power bases in Northern Shaanxi and southeastern Shanxi to central and eastern China, Mengxi coal power base to North and eastern China, and southwest Hydropower to central and eastern China
at present, only China has developed 1000 kV High Voltage Technology in the world. "In the next step, the United States will build a transmission network of more than 4000 kilometers, and it is likely to choose UHV technology, because UHV is the most economical way to achieve long-distance transmission." Said Hu Zhaoguang
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