Polaris Energy Storage Network learned that on November 10, the light-fire storage coupling 22 MW/4.5 MWh flywheel energy storage project of the National Energy Group Ningxia Electric Power Lingwu Company started. This project is the first full-capacity flywheel energy storage in China-thermal power The joint frequency modulation project is also the flywheel energy storage with the largest single power storage and the largest single power in the world, breaking through the technical bottleneck of the 500-kilowatt high-power flywheel single unit, and realizing the high-power flywheel single engineering application.

Flywheel energy storage is an energy storage method that uses a motor to drive the flywheel to rotate at a high speed, and then uses the flywheel to drive the generator to generate electricity when needed. Compared with other energy storage technologies, flywheel energy storage has a high energy storage density, power levels ranging from kilowatts to megawatts, and discharge times ranging from milliseconds to tens of minutes. The charge and discharge process is controllable. The number of charge and discharge is independent of the depth of charge and discharge. Long, up to several decades, high reliability and easy maintenance. The application of flywheel energy storage in the field of fire-storage joint frequency modulation has attracted more and more attention. As of July 2020, the total number of fire-storage joint frequency modulation projects in operation, under construction and winning bids in my country has reached 58, showing a rapid growth trend.

It is understood that the National Energy Group Ningxia Electric Power Lingwu Co., Ltd. Light-Fire Storage Coupling Project. The overall design of the research and demonstration application project of the flexibility improvement technology of coal power units based on the light-fire storage coupled heat and power cogeneration system, including: photovoltaic, energy storage, electric boiler master plan Layout; 6MW plant area distributed photovoltaic system design; 18MW flywheel energy storage system design; 100MW electrode boiler system design.

National Energy Ningxia Electric Power Fire Storage Coupling Project completed the detailed geological survey of the flywheel energy storage project on October 8, and successfully completed the #1 unit 10kV section II and the utility section flywheel energy storage connection cabinet and cabinet combination work on October 30. The company's No. 1 and No. 2 machines are expected to be connected to the system for operation in June and October 2022, respectively.