With the increasing proportion of wind and solar energy in China's energy system, Energy Storage technologies and industries closely related to the development of new energy have also attracted much attention. Since this year, provinces and cities have accelerated the implementation of energy storage projects, and more than 20 provinces have defined the proportion of supporting energy storage equipment allocation and storage.
Accelerate the layout of energy storage construction in multiple places
In Changxing, Zhejiang province, a 6.7 billion yuan new energy battery production base project has begun. The project plans to build the world's leading energy storage system around new energy raw materials such as lithium iron phosphate and ternary materials.
Chen Xuefeng, Deputy Director of Changxing County Development and Reform Bureau, Zhejiang Province: "Much starker choices-and graver consequences-in" period we have already started planning layout set "source network load store sale" one of the energy system, energy storage industry as one of the important link, we support the market main body, especially the leading enterprises, strengthen product technology research and development, the leading enterprise of technology more mature, we attract to changxing investment development energy storage industry.
During the 14th Five-Year Plan period, Zhejiang province will strive to achieve the development target of new energy storage demonstration projects of about 2 million kW.
China's first 100 megawatt decentralized controlled energy storage power plant has been put into operation in Jinan, Shandong province. It can charge 212,000 kilowatts per charge, enough to power 1,000 homes for a month.
Wen Ziqiang, engineer of Jinan Hundred megawatt decentralized control energy storage Power Station: Our project absorbs the surplus new energy in Shandong province at present. It can be charged and discharged twice a day, absorbing 400,000 KWH of electricity, and then releasing it for users in real time through the demand of the power grid.
Hunan province has established the mechanism of "new energy + energy storage" and strives to build more than 1.5 million kilowatt hours of electrochemical energy storage power stations by 2023.
Ningxia proposes that the proportion of energy storage in new energy projects should be no less than 10% and the continuous storage time should be more than two hours.
Dai Jianfeng, director of technology Innovation and Industrial Planning Center of Electric Power Planning and Design Institute: At present, we have entered the early stage of commercial application from the laboratory stage. By the end of 2021, the scale of China's new energy storage has exceeded 3 million kilowatts.
According to the Guidance on Accelerating the Development of New Energy Storage issued by the National Development and Reform Commission and the National Energy Administration, the transformation of new energy storage from the initial stage of commercialization to large-scale development will be realized by 2025, and the installed capacity will reach over 30 million kW. By 2030, the comprehensive market-oriented development of new energy storage will be realized.
Chen haisheng, director of energy storage committee of China energy research society :(at present) our total installed capacity is close to 2% of the total installed capacity of our system. By 2050, it should account for 10% to 15% of the total installed capacity. There is still a huge space for us to meet the market demand.
What is an energy storage system?
Compared with traditional fossil energy, the problem of unstable and intermittent power generation in wind power and photovoltaic industry needs the peak and frequency regulation ability of energy storage equipment to solve it. What is energy storage?
Energy storage refers to the conversion of electrical energy into other forms of energy by physical or chemical means, and the release of energy into electrical energy when needed, similar to a large "charging bank".
Current energy storage methods are mainly divided into two categories, one is physical energy storage, one is chemical energy storage. Physical energy storage mainly includes pumped storage, compressed air energy storage, cold and heat storage and flywheel energy storage, etc. Chemical energy storage mainly includes Lithium Battery, lead acid battery, liquid flow battery, sodium ion battery and super capacitor, etc. New energy storage projects are energy storage projects except pumped storage.
Energy storage system is equivalent to "reservoir", which can not only solve the problem of power system instability caused by new energy generation, but also effectively improve the power utilization and supply and demand balance of new energy generation.
Diversified development of energy storage and new technologies continue to emerge
The most important use of energy storage is to solve the problem of time mismatch between power supply and demand, commonly known as peak regulation. Different energy storage technologies have different advantages and disadvantages and application scenarios. In the development of energy storage industry in China, new technologies are emerging.
In Zhangjiakou, Hebei province, a 100-megawatt compressed air energy storage project is undergoing live commissioning. After completion, the project will become the largest and most efficient advanced compressed air energy storage power station in the world.
Discipline, Director, Industrialization Office, Energy Storage R&D Center, Institute of Engineering Thermophysics, Chinese Academy of Sciences: We can not only drive the compressor through the motor to compress the air, but also convert the electric energy into the pressure energy of the air to store. This technology enables large-scale consumption and access of renewable energy.
In Wulanchabu, Inner Mongolia, a large "source network load storage" technology research and development test base is accelerating. The test base has set up seven energy storage technology verification platforms, including the first solid-state lithium ion battery storage power station and the first 3MW sodium ion battery demonstration power station in China, as well as the energy storage technology testing laboratory and large-scale new energy access simulation verification laboratory.
Sun Changping, Director of Science and Technology Research Institute of Three Gorges Corporation: It is a combination of scientific research, demonstration and application. The platform is mainly to verify the new generation of energy storage technology, and then promote the development of the next generation of energy storage technology.
According to the policy of the National Energy Administration, the energy storage industry will strengthen technological innovation, overcome the bottleneck technology, promote cost reduction and large-scale development with technological progress, improve the policy support and market environment, and cultivate a mature business model.
Dai Jianfeng, Director of technology Innovation and Industrial Planning Center, China Electric Power Planning and Design Institute: The country has introduced some innovative platforms for emerging energy storage to support the research and development of this related technology. In addition, there are some platforms integrating industry and education to promote the development of related energy storage technology and realize the accelerated integration of innovation chain and industrial chain through the combination of industry, university and research.
The new energy storage market environment needs to be improved
Insiders say that as an emerging industry, new energy storage has been explored in terms of policy mechanism, but unified and standardized management ideas have not yet been formed, and the current market environment needs to be improved.
Dai Jianfeng, Director of technical Innovation and Industrial Planning Center of China Electric Power Planning and Design Institute: At present, as the development of our new energy storage industry is still in its early stage, the overall market mechanism, including some industrial management policies, are not particularly perfect at present.
Chen Haisheng, director of the Energy storage Committee of China Energy Research Society, said: "The energy storage technology itself needs further development, mainly to expand the scale of the system, to further increase the life span, and to reduce the cost. Forming a stable price mechanism that reflects the value of energy storage is beneficial to the healthy, stable and sustainable development of energy storage.
Experts said that the current energy storage routes, a wide range of application scenarios, from the demonstration application stage to large-scale commercial application stage, the demand for standard system revision has increased sharply, the existing standard level and capacity has become one of the constraints of the industry development of the short board.
Chen Haisheng, Director of energy Storage Special Committee of China Energy Research Society, said: The standard and specification of energy storage still needs the joint efforts of our market, enterprises and research institutions to jointly promote the standardization.
Chen Haisheng, director of the Energy storage Committee of China Energy Research Society, said: "The energy storage technology itself needs further development, mainly to expand the scale of the system, to further increase the life span, and to reduce the cost. Forming a stable price mechanism that reflects the value of energy storage is beneficial to the healthy, stable and sustainable development of energy storage.
Experts said that the current energy storage routes, a wide range of application scenarios, from the demonstration application stage to large-scale commercial application stage, the demand for standard system revision has increased sharply, the existing standard level and capacity has become one of the constraints of the industry development of the short board.
Chen Haisheng, Director of energy Storage Special Committee of China Energy Research Society, said: The standard and specification of energy storage still needs the joint efforts of our market, enterprises and research institutions to jointly promote the standardization.
