It is reported that the world’s first 220KV superconducting current limiter project of Tianjing Power Co., Ltd. is about to be put into operation. This is another major breakthrough in China’s superconductivity industry following the two major projects in Yunnan, Phuket, and Gansu and Baiyin. This also means that the superconducting industrialization process is accelerating.
Superconducting material is a material that has the property of showing zero resistance and repelling magnetic flux lines under certain low temperature conditions, and it has broad application prospects in smart grids, urban power expansion and so on.
According to the forecast of relevant agencies, the superconducting market has a potential scale of 100 billion yuan, and superconducting materials account for 30%-40%. Among them, “the potential market for superconducting current limiters is huge, because superconducting current limiters are the only products that can solve the short circuit current and protect the circuit. Nowadays, domestic superconducting materials mainly rely on imports from the United States and Japan, and superconducting materials account for superconductivity. About 50% of the product cost. Therefore, the localization of superconducting materials will become the focus of the development of the domestic superconducting industry,†said one industry analyst.
The application prospects of superconducting materials are broad. In the global context, smart grids are ushering in an investment boom, and smart grids are also one of the focuses of China's “12th Five-Year†period. According to industry figures, superconductivity is a key technology in the process of large-scale construction of smart grids. If the price of the superconducting cable is attractive enough, it will enter the commercial application of the smart grid, and the prospects are very broad. To this end, Shanghai issued in May 2010 "Shanghai to promote smart grid industry development action plan (2010-2012)", clearly stated that superconducting current limiter is the focus of the development of smart grid industry in Shanghai.
In addition, due to the small footprint and the small amount of excavation and laying work, high-temperature superconducting cables have recently been incorporated into the consideration of power delivery to megacity centers. Experts said that many large cities in East China and South China have already faced such problems: The expansion of the city is too fast, the electricity consumption has soared, and the transmission cables have been severely saturated. However, it is impossible to build new high-voltage overhead lines in the urban areas. In addition, the level of planning for underground pipeline systems in urban construction in China is lagging behind. It is also very difficult to lay large-capacity cables. "Compared with conventional cables, the transmission capacity of high-temperature superconducting cables is 3-5 times higher."
Experts believe that after the second generation of high-temperature superconducting strip industrial production, it can effectively solve the problem of power expansion in densely populated metropolitan areas, and improve the safety and reliability of power supply systems. At present, the second generation of high-temperature superconducting tapes in the world is about to enter the large-scale market application, and China’s vigorous industrialization research and development in this area is at the right moment.
In addition, “in the initial stage of the high-temperature superconductor industry, the industry generally expects current limiters to be the earliest superconducting applications in the superconducting industry to achieve commercialization and the most promising market prospects. This is because they are used in transmission and distribution of various networks. " A domestic manufacturer of superconducting wire rods said.
Industry sources pointed out that superconducting current limiter is currently the only product that can solve the short circuit current and protect the circuit. According to the "12th Five-Year Plan", the number of substations with a short-circuit current exceeding 100 kA is estimated. By 2020, the potential market capacity of superconducting current limiters in China will be 200 billion yuan.
Multi-party development of superconducting industry Accelerated development It is reported that as a high-tech product, superconducting materials are steadily advancing in R&D and industrialization, which lays the foundation for the accelerated industrialization of superconducting materials.
For example, it is reported that the world’s first 220KV superconducting current limiter project of Tianjing Power Co., Ltd. is about to be put into operation. This is another major application of China’s superconducting industry following the two major projects in Yunnan, Phuket, and Gansu and Baiyin. Breakthrough means that the superconducting industrialization process is accelerating.
It is understood that since the 220KV superconducting current limiter project was started in 2007, after several years of equipment development, it has now successfully entered the stage of experimental operation. At present, the technical party Yunnan Yingna Superconductor and the equipment side Tianjin Baili Electric participate in the project.
In addition, the State Grid is preparing to build a 1 kilometer long and 110 kv high-temperature superconducting cable demonstration project, which is planned to be completed in 2012, which will stimulate the entire superconducting material industry.
“At present, we are making some technical reserves for the one-kilometre project, including testing platform construction, related technology research and development, principle prototype design, etc.†said the director of the Superconductivity Research Institute of the Chinese Academy of Electric Power to Xiaokang. The purpose of the superconducting test project is to apply superconductivity technology as much as possible, and to find out a better technical direction through the use of inspection technology, thereby stimulating the accelerated development of superconducting materials and technologies.
However, according to Xiaokang, the current price of superconducting wire is too high compared to traditional cables, and it is not yet a condition for large-scale commercial promotion.
“Like electric cars, although they are more expensive than fuel cars, we cannot wait and must develop gradually. Otherwise, it will be difficult for us to make advances in technology.†To Xiaokang, although it does not have the conditions for industrialization, it is a development direction. It is necessary to stimulate technological development by expanding demonstrations so as to promote the entire superconducting industry into a benign development cycle.
"The development of superconducting materials is like a long-distance running. We must continue to track the international advanced level and try our best to keep up with the international level and continue to apply incentives to the development of the industry."
Actively expanding international cooperation and applications At present, some high-end superconducting materials in China have entered the international market. It is reported that the first conductor procurement package for the ITER project undertaken by China recently has been completed and will be delivered soon.
According to relevant experts, ITER has spent more than 100 billion euros and has attracted top scientists from the world.
The performance of ITER superconducting conductors, shielding blankets and other components developed by China has taken a leading position among the seven participants, and the progress of some procurement packages is at the forefront.
In addition to the above-mentioned international scientific research projects, the application of superconducting materials in the power grid field in China has only just begun. Currently, it is mainly used in superconducting current limiters.
The superconducting current limiter is used for short-circuit current, and the latter is the maximum current that the grid may pass when a short circuit occurs at a certain point. The superconducting current limiter can reduce the loss of the short circuit to the grid equipment. With the increase of the voltage level of the grid and the degree of interconnection of the grid, it is imperative to limit the short-circuit current. The short-circuit current exceeding the standard of the power grid is most serious in the Pearl River Delta and Yangtze River Delta regions. Industry insiders believe that the superconducting current limiter will be used first in China Southern Power Grid and East China Power Grid.
The relevant person of the listed company Baili Electric believes that the superconducting current limiter is the key equipment for the construction of smart grid. The stability of smart grid is the top priority of smart grid construction. Superconducting current limiter can effectively improve the transient stability of smart grid.
In 2006, three-phase 30m and 2kA/35kV high-temperature superconducting cables developed by Yingna Superconductor and Yunnan Power Group Holdings's Yundian Yingnao were connected to the Kunming 220kv Phuket Substation, which is also the third group in the world. Operating high-temperature superconducting cable system.
In April 2011, the world’s first superconducting substation independently developed by China was formally put into operation in Baiyin, Gansu Province, laying a very important foundation for superconducting industrialization. Xiao Liye, director of the Institute of Electrical Engineering at the Chinese Academy of Sciences, stated that the completion of the superconducting substation is a concentrated expression of the latest and most advanced research and development results in the field of superconducting power technology in China in the past 10 years, and has achieved a series of breakthroughs in core and key technologies.
Superconducting material is a material that has the property of showing zero resistance and repelling magnetic flux lines under certain low temperature conditions, and it has broad application prospects in smart grids, urban power expansion and so on.
According to the forecast of relevant agencies, the superconducting market has a potential scale of 100 billion yuan, and superconducting materials account for 30%-40%. Among them, “the potential market for superconducting current limiters is huge, because superconducting current limiters are the only products that can solve the short circuit current and protect the circuit. Nowadays, domestic superconducting materials mainly rely on imports from the United States and Japan, and superconducting materials account for superconductivity. About 50% of the product cost. Therefore, the localization of superconducting materials will become the focus of the development of the domestic superconducting industry,†said one industry analyst.
The application prospects of superconducting materials are broad. In the global context, smart grids are ushering in an investment boom, and smart grids are also one of the focuses of China's “12th Five-Year†period. According to industry figures, superconductivity is a key technology in the process of large-scale construction of smart grids. If the price of the superconducting cable is attractive enough, it will enter the commercial application of the smart grid, and the prospects are very broad. To this end, Shanghai issued in May 2010 "Shanghai to promote smart grid industry development action plan (2010-2012)", clearly stated that superconducting current limiter is the focus of the development of smart grid industry in Shanghai.
In addition, due to the small footprint and the small amount of excavation and laying work, high-temperature superconducting cables have recently been incorporated into the consideration of power delivery to megacity centers. Experts said that many large cities in East China and South China have already faced such problems: The expansion of the city is too fast, the electricity consumption has soared, and the transmission cables have been severely saturated. However, it is impossible to build new high-voltage overhead lines in the urban areas. In addition, the level of planning for underground pipeline systems in urban construction in China is lagging behind. It is also very difficult to lay large-capacity cables. "Compared with conventional cables, the transmission capacity of high-temperature superconducting cables is 3-5 times higher."
Experts believe that after the second generation of high-temperature superconducting strip industrial production, it can effectively solve the problem of power expansion in densely populated metropolitan areas, and improve the safety and reliability of power supply systems. At present, the second generation of high-temperature superconducting tapes in the world is about to enter the large-scale market application, and China’s vigorous industrialization research and development in this area is at the right moment.
In addition, “in the initial stage of the high-temperature superconductor industry, the industry generally expects current limiters to be the earliest superconducting applications in the superconducting industry to achieve commercialization and the most promising market prospects. This is because they are used in transmission and distribution of various networks. " A domestic manufacturer of superconducting wire rods said.
Industry sources pointed out that superconducting current limiter is currently the only product that can solve the short circuit current and protect the circuit. According to the "12th Five-Year Plan", the number of substations with a short-circuit current exceeding 100 kA is estimated. By 2020, the potential market capacity of superconducting current limiters in China will be 200 billion yuan.
Multi-party development of superconducting industry Accelerated development It is reported that as a high-tech product, superconducting materials are steadily advancing in R&D and industrialization, which lays the foundation for the accelerated industrialization of superconducting materials.
For example, it is reported that the world’s first 220KV superconducting current limiter project of Tianjing Power Co., Ltd. is about to be put into operation. This is another major application of China’s superconducting industry following the two major projects in Yunnan, Phuket, and Gansu and Baiyin. Breakthrough means that the superconducting industrialization process is accelerating.
It is understood that since the 220KV superconducting current limiter project was started in 2007, after several years of equipment development, it has now successfully entered the stage of experimental operation. At present, the technical party Yunnan Yingna Superconductor and the equipment side Tianjin Baili Electric participate in the project.
In addition, the State Grid is preparing to build a 1 kilometer long and 110 kv high-temperature superconducting cable demonstration project, which is planned to be completed in 2012, which will stimulate the entire superconducting material industry.
“At present, we are making some technical reserves for the one-kilometre project, including testing platform construction, related technology research and development, principle prototype design, etc.†said the director of the Superconductivity Research Institute of the Chinese Academy of Electric Power to Xiaokang. The purpose of the superconducting test project is to apply superconductivity technology as much as possible, and to find out a better technical direction through the use of inspection technology, thereby stimulating the accelerated development of superconducting materials and technologies.
However, according to Xiaokang, the current price of superconducting wire is too high compared to traditional cables, and it is not yet a condition for large-scale commercial promotion.
“Like electric cars, although they are more expensive than fuel cars, we cannot wait and must develop gradually. Otherwise, it will be difficult for us to make advances in technology.†To Xiaokang, although it does not have the conditions for industrialization, it is a development direction. It is necessary to stimulate technological development by expanding demonstrations so as to promote the entire superconducting industry into a benign development cycle.
"The development of superconducting materials is like a long-distance running. We must continue to track the international advanced level and try our best to keep up with the international level and continue to apply incentives to the development of the industry."
Actively expanding international cooperation and applications At present, some high-end superconducting materials in China have entered the international market. It is reported that the first conductor procurement package for the ITER project undertaken by China recently has been completed and will be delivered soon.
According to relevant experts, ITER has spent more than 100 billion euros and has attracted top scientists from the world.
The performance of ITER superconducting conductors, shielding blankets and other components developed by China has taken a leading position among the seven participants, and the progress of some procurement packages is at the forefront.
In addition to the above-mentioned international scientific research projects, the application of superconducting materials in the power grid field in China has only just begun. Currently, it is mainly used in superconducting current limiters.
The superconducting current limiter is used for short-circuit current, and the latter is the maximum current that the grid may pass when a short circuit occurs at a certain point. The superconducting current limiter can reduce the loss of the short circuit to the grid equipment. With the increase of the voltage level of the grid and the degree of interconnection of the grid, it is imperative to limit the short-circuit current. The short-circuit current exceeding the standard of the power grid is most serious in the Pearl River Delta and Yangtze River Delta regions. Industry insiders believe that the superconducting current limiter will be used first in China Southern Power Grid and East China Power Grid.
The relevant person of the listed company Baili Electric believes that the superconducting current limiter is the key equipment for the construction of smart grid. The stability of smart grid is the top priority of smart grid construction. Superconducting current limiter can effectively improve the transient stability of smart grid.
In 2006, three-phase 30m and 2kA/35kV high-temperature superconducting cables developed by Yingna Superconductor and Yunnan Power Group Holdings's Yundian Yingnao were connected to the Kunming 220kv Phuket Substation, which is also the third group in the world. Operating high-temperature superconducting cable system.
In April 2011, the world’s first superconducting substation independently developed by China was formally put into operation in Baiyin, Gansu Province, laying a very important foundation for superconducting industrialization. Xiao Liye, director of the Institute of Electrical Engineering at the Chinese Academy of Sciences, stated that the completion of the superconducting substation is a concentrated expression of the latest and most advanced research and development results in the field of superconducting power technology in China in the past 10 years, and has achieved a series of breakthroughs in core and key technologies.
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