Cost Estimation Models of MJ Class HTS Superconducting Magnetic Energy Storage Magnets

An HTS superconducting magnetic energy storage (SMES) can be utilized to improve the security and stability of the power grid with renewable energy generation. In different application scenarios, the requirements for capacity and power of the SMES varies, which needs the appropriate SMES allocation in the power grid. A cost estimation is the key component for the SMES allocation. Therefore, this paper proposed a cost estimation method of an HTS SMES, which synthetically considers the design, manufacture, operation, maintenance, and application scenarios. First, the cost estimation model of an HTS SMES was proposed based on the optimal superconducting magnet design. Then, adopting typical scenarios in the power grid, the economic capacity of SMES allocations were analyzed. Finally, the cost trend of an HTS SMES was carried out based on the development trend of assembly units.