Recently, led by CNOOC New Energy Erlianhot Wind Power Co., Ltd. Beijing Honghui, Chinese Academy of Sciences, Tsinghua University, Wuhan University, Inner Mongolia University of Science and Technology, Inner Mongolia University of Technology, Institute of Nuclear Physics and Chemistry, The demonstration project of the autonomous region's major science and technology project "Research on Key Technologies of MW Flywheel Energy Storage" jointly implemented by China Nuclear Huineng Co., Ltd. and other units has been successfully connected to the grid in Erlianhot City.
The project is a new energy station frequency modulation application of "flywheel energy storage + lithium-electric hybrid energy storage" . Three 1MW flywheel arrays are controlled together with 3MW lithium batteries to form a hybrid energy storage system , which provides frequency modulation auxiliary service support for 99 MW wind farm in Erlianhot.
"Flywheel energy storage uses a high-speed rotating rotor in a low-friction environment to store energy. Its working principle is to use electric energy to accelerate the flywheel and convert the electric energy into mechanical energy for storage.". When electricity is needed, the flywheel drives the generator set, and then the mechanical energy is converted into electric energy. Wei Xiaogang, project manager of CNOOC New Energy Erlianhot Wind Power Co., Ltd., said that this method has obvious advantages in energy storage, because it is the conversion of electric energy and mechanical energy, and is relatively less polluting.
In addition, the flywheel energy storage power density is relatively high and the start-up speed is relatively fast, which is very practical for some specific scenarios, such as sudden power failure in the data center, in order to avoid data loss, the energy storage system needs to respond quickly and start quickly.
It is understood that since the implementation of the project in 2020, the scientific research team has conducted in-depth research on the interdisciplinary issues of mechanics, electromagnetics, thermology, power system and control involved in flywheel energy storage. It breaks through the design and manufacture of high strength steel and composite rotor with large energy storage, low loss design of large capacity and high speed permanent magnet motor generator, high efficiency and large capacity converter and its charge and discharge control, high reliability and large load bearing magnetic bearing and its control, flywheel energy storage magnetic-electrical-thermal-mechanical multi-subsystem integration, flywheel energy storage array coordination control, etc. Flywheel energy storage array participates in key technologies such as high-frequency primary frequency regulation control of power grid, and has achieved innovative achievements with completely independent intellectual property rights, among which high-power high-speed motor generator in vacuum and high-frequency charging and discharging control of flywheel energy storage have reached the international leading level.
Up to now, the project has applied for 24 invention patents, 8 utility model patents and 15 soft works.
"The wide application of flywheel energy storage in power grid can solve the problems of environmental impact and limitation of charging and discharging times faced by electrochemical energy storage, and greatly improve the safety of power grid operation and the proportion of new energy consumption." Xie Bo, deputy general manager of China Nuclear Huineng, introduced that under the background of "double carbon", flywheel energy storage, as a manufacturing energy source, will give full play to the advantages of high-frequency physical energy storage technology, highlight the optimal effect in combination with other energy storage technologies, and promote the innovation and transformation of the energy industry towards safety, green and efficiency.
In order to promote the application of photovoltaic technology in building materials and other industries, share and learn from the application cases and experiences of leading enterprises, Digital Photovoltaic New Energy will hold the " 2023 China Photovoltaic New Energy Development Conference " in Chongqing on July 6-7, 2023. Government leaders, technical specialist of photovoltaic industry , scientific research institutions, industrial enterprises and photovoltaic equipment suppliers are invited to attend the conference to discuss new ways of energy saving and consumption reduction, and to promote the integration of photovoltaic technology and traditional industries to achieve new leapfrog development.
For details, please click : 2023 China Photovoltaic New Energy Development Conference .
Source: Inner Mongolia Autonomous Region Science and Technology Department
浙公网安备33010802003254号