The energy output equilibrium scheme with intermediate energy storage for tokamak fusion power plant

• Stabilize power of fusion plants by thermal energy storage . • Couple and decouple schemes of thermal energy storage were presented. • Through analysis, a suitable solution of fusion plant was proposed. Different from the design of nuclear fission power plant, the design of fusion power plant needs to consider the problem of discontinuous fusion energy output from nuclear island. This paper proposed an energy output equilibrium scheme for fusion power plant. Based on analysis and comparison, thermal energy storage method was adopted, and two system operation schemes for fusion power plant were further proposed. Finally, system thermal storage calculation and analysis were conducted under WCCB blanket and HCCB blanket respectively, and conclusions were drawn on the applicable system operation scheme under different blankets. This study provides research foundation and engineering reference for the design and construction of future fusion power plants.