In late April, the 1 million volt Huainan Nanjing Shanghai UHV exchange project was approved by the state and became the first approved UHP line in the year. Recently, there have been news that a package of twelve transmission channels, including multiple UHV projects, was evaluated. The industry is expected that this year, UHV will enter the phase of intensive approval and construction, and the golden period of the development of UHV has arrived.
Speeding up the construction of UHV has become a broad consensus
On April 18th, Premier Li Keqiang held the first session of the new National Energy Commission, and discussed the related strategic issues and major projects in energy development. The conference clearly pointed out that the development of long-distance and large capacity transmission technology, this year, we need to start construction of a number of transmission channels of "west to East power transmission" by UHV and conventional technology according to the plan, optimize the allocation of resources and promote consumption reduction and efficiency.
According to media reports, Premier Li Keqiang's statement directly stopped the industry's debate about the construction of UHV. UHV is not only to be built, but also to build a batch, this year it is expected to be a "big year" for the examination and approval and construction of UHV.
Speeding up the development of UHV power grids is the only way for China to transform the way of energy development, ensure energy security, build ecological civilization and serve the economic and social development. At present, the company built and run the "two pay three straight (" two ": Jindongnan to Jingmen UHV AC demonstration project and its expansion project, Anhui power transmission from Huainan to Shanghai UHV AC demonstration project;" three straight ": Xiangjiaba - Shanghai - 800 thousand volt HVDC demonstration project, Jinping + 800 thousand volt - South of Jiangsu HVDC project, Hami South - Zhengzhou - 800 thousand volt high-voltage DC transmission project) a total of 5 UHV AC and DC transmission lines, is playing an important role in the cross transmission, regulating their. But considering the long term and global perspective of the national electricity demand, the rational and efficient utilization of energy resources and the construction of "beautiful China", the development of UHV power grid is still lagging behind, and it is urgent to accelerate the construction.
Chairman, party secretary Liu Zhenya pointed out: "to accelerate the construction of backbone grid of UHV and unified national electricity market, promote the great coal, hydropower, nuclear power, renewable energy power base of large intensive development, the UHV power grid in the optimal allocation, can solve the problems of waste water and abandoned wind, abandoned light etc. the problem, but also greatly improve the development efficiency of coal and other fossil energy."
The construction of UHV has now become a widespread consensus. The development of UHV has been included in the national plan for 11th Five-Year and 12th Five-Year, the action plan for air pollution control and the 12th Five-Year plan for energy development. Energy output and input provinces are urgently required to speed up the construction of UHV power grid. During the two sessions this year, 75 representatives from 26 provinces (autonomous regions and municipalities) submitted proposals and proposals for UHV and smart grid development, of which 16 were recommended by delegations. The development of UHV power grid has been listed as the key proposal of the National People's Congress and the key proposal of the National Committee of the Chinese people's Political Consultative Conference. Recently, the CPPCC National Committee organized a symposium on UHV and field investigation, and UHV this year as the CPPCC biweekly consultation forum topics. Shi Dazhen, the Minister of the Ministry of power industry, said that the construction of UHV is an effective way of resource allocation in China, and it should be accelerated.
The 12 district planning and Construction Bureau of national energy power transmission channels, including the national Power Grid Corp 4 UHV AC lines and 4 UHV DC transmission line, are Ximeng - Shandong, Yu Wang - Shandong, Huainan - Nanjing - Shanghai - Tianjin, West Inner Mongolia 4 1 million volt AC UHV transmission line, Inner Mongolia and Shanghai temple - Shandong, Ximeng - Jiangsu, Shanxi - Zhejiang, Ningdong - Jiangsu 4 + 800 thousand volts high voltage DC transmission line, the future of the optimal allocation of energy resources, governance haze will play an important role. Once the "four hands and four straight" projects have been approved, the company can carry out the early work and promote the construction of the project in an orderly way.
In the "four pay four straight project, in Ximeng area of Inner Mongolia as the starting point of the project is two. Ximeng area of coal and wind energy resource rich, suitable for local development into power transmission. According to the plan, through the construction of Ximeng - Shandong UHV AC transmission line project, to increase the transmission power of 3 million kilowatts in Tianjin, Shandong to increase the transmission power of 6 million kilowatts. After the completion of the project, the coal and electricity consumption of Beijing, Tianjin and Jizu area can be reduced by 14 million 850 thousand tons of standard coal / year, 20 million 790 thousand tons per year of the raw coal and 36 million 380 thousand tons per year for carbon dioxide emission reduction.
UHV is fully equipped with large scale construction conditions
UHV power grid is a significant innovation product of China's own intellectual property rights in the world energy field. It has the advantages of large transmission capacity, long distance, high efficiency, low loss and less land occupation. It has been playing an important role in the trans regional power transmission. After years of hard work, our country's UHV technology has led the world, fully proved the necessity, economy and security of UHV. At present, the conditions and time of speeding up the development of UHV power grid are fully ripe.
UHV has been proved scientifically and closely. Co more than 10 industry organizations and consulting agencies, 8 colleges, more than 100 engineering design and equipment manufacturing units, the organization of more than 30 academicians, professors and engineering and technical personnel more than 3000 people, held 300 times an important special demonstration will further demonstrate the feasibility, safety and economy of UHV power grid, many of the old leadership, the old experts put forward reasonable suggestions on the development of uhv. Energy Bureau of the national development and Reform Commission, several large-scale demonstration and research, were commissioned China Academy of engineering, China Academy of Sciences, SERC, CEC, CMIF 5 units were independent demonstration, were clearly put forward in support of opinion.
UHV has been tested by long term practice. The "two cross three straight" UHV projects have been operated safely for a long time, and the accumulative power supply exceeds 160 billion kwh. Jindongnan to Jingmen UHV AC demonstration project put into operation for 5 years, to achieve a two-way, full voltage and large capacity transmission, suffered thunderstorms, high winds, high temperature, cold and other inclement weather test, to March this year, the cumulative amount of transmission over 58 billion 300 million kwh, a north-south direction of our country's important energy transmission channel. Xiangjiaba - Shanghai, Jinping - South of Jiangsu, Hami - Zhengzhou south 3 HVDC project, Sichuan, Xinjiang and other places of hydropower, thermal power and wind power and other large-scale transport to the east central load center, to the end of March this year a total of 94 billion kwh power transmission, play an irreplaceable role in the development and use of clean energy.
UHV has become the "golden card" of China's power grid. After ten years' efforts, China has mastered the core technology of UHV, and the localization rate of UHV AC and DC equipment is over 90%, breaking the long-term monopoly of TNCs in the international market. UHV AC voltage DC project has become the international standard, realize the "going out", the International Electrotechnical Commission (IEC) has 4 Special Committee Secretariat in the company, significantly enhance the voice and influence in the world in the field of power grid standard in china. Former U.S. Secretary of energy Bill Richardson wrote that China is the development of UHV UHV transmission cross transmission technology, can make the coal consumption optimization, the long-distance transmission loss to a minimum, and reduce greenhouse gas emissions, and this is the most industrialized country facing challenges.
The development of UHV is of great significance, and it is of great significance. It needs overall planning, long-term consideration, clear goals and accelerated progress. With the support and help of the state, great breakthroughs have been made in the development of our country's UHV. We believe that with the approval, construction and operation of a number of key projects, UHV will play a more important role in the near future and make greater contributions to China's energy security, economic development and improvement of people's livelihood.
Source of information: National Grid newspaper
