Magnet design of 10MJ multiple solenoids SMES

The superconducting magnetic energy storage system uses the superconducting coil to store the energy of the grid in the form of electromagnetic energy, and then release the electromagnetic energy to the power grid or other devices when needed. Compared with other energy storage technologies, superconducting magnetic energy storage systems have the advantages of fast response, adjustable active and reactive four quadrants, it can improve the stability and quality of power system, and be used for dispersion in power systems, power system and energy management. This paper mainly introduces the magnet design of four-screw SMES in 10 MJ class, including performance analysis, modular and parallel design scheme and AC loss calculation.