As China's power resources and load resources do not match geographically, "sending power from the west to the east and sending Nortel to the south" will remain the basic national needs of our country. Our country will still maintain the pattern of national interconnection. For such a huge power grid with a high proportion of renewable energy access, it is a major issue to be solved in the future development of China's power grid to ensure the security, stability and operational reliability of power grids and to reduce network losses.
A few days ago held in Beijing, "the application of superconducting technology in the future grid" as the theme of the 505th Xiangshan Science Conference, the participating experts pointed out: due to the superconductors have the special physical properties, such as no loss of high density current carrying capacity Therefore, in essence, the superconducting power technology has significant advantages in improving the security and stability of the power grid and the power quality, increasing the capacity of long-distance transmission with large capacity, reducing the power consumption of the power grid and reducing the power equipment land. If it can be widely used in the future power grid, it will have a revolutionary impact and is of great significance to promoting the reform of new energy .
Academia Sinica Institute of Electrical Engineer Yan Luguang said superconducting power technology will usher in the third stage of development, the core is to achieve the practical application of superconducting technology, but need to focus on high temperature superconducting physical mechanisms to improve the critical temperature of high temperature superconductors made A major breakthrough. According to Academician Zhou Xiaoxin of China Electric Power Research Institute, the cross-regional interconnection of the national power grid will still be the basic demand of our country. The new transmission technology based on superconducting transmission HVDC transmission network has great advantages in principle. Because of the loss of conventional transmission technology Large, if the superconductivity of physics and materials to make a major breakthrough will be of great significance.
Associate Professor Gan Zizhao of Peking University pointed out that superconducting technology is a totally new paradigm that will completely change the traditional grid mode. However, the development of superconducting power technology requires long-term efforts, in addition to raising the critical temperature of superconductors, the superconducting materials, engineering and other aspects of low temperature to be made new breakthroughs. Academician Zhao Zhongxian, Institute of Physics, Chinese Academy of Sciences believes that the development of superconducting power technology needs step by step, the current can choose the special needs of the grid and conventional technologies difficult to solve the direction as an entry point, such as transmission lines across the river, tunneling short-range high-capacity electricity delivery.
Xiao Liye, a researcher at the Institute of Electrical Engineering, Chinese Academy of Sciences, emphasized that the organic integration and complementarity of superconducting power technologies and other technologies should be paid attention to because the development of the power grid needs to integrate a variety of technologies. Huazhong University of Science and Technology Cheng Shijie academicians believe that the superconducting energy storage system with a variety of energy storage system for the complex application of renewable energy is of great significance.
The participating experts agreed that the superconducting power technology is one of the important research and development directions of future power grid technology. They suggested that a "Superconducting Electricity Technology Action Plan" should be set up to strengthen the overall design of the superconducting power technology and formulate a roadmap for the near, medium and long-term development strategies, highlighting the goal-driven orientation and at the same time suggest strengthening the organization at the national level by research departments Colleges and universities, power grid companies and power equipment manufacturing enterprises to jointly establish relevant research and test platforms, consolidate the research conditions, unify deployment and coordinate research.
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