LHSS Combined SMES System Capacity Optimization Based on Economic Benefit

Based on the common characteristic that liquid hydrogen storage system (LHSS) and superconducting magnetic energy storage (SMES) has similar requirement of refrigeration, This paper analyzes advantages of joint operation of LHSS and SMES based on their performance characteristics. Based on the charge-discharge characteristics of each part (LHSS, SMES) of the joint system, an optimal capacity optimization method is proposed with the goal of best revenue rate with participating in ancillary services. Also, the effectiveness of the proposed strategy is verified by case study.