Abstract
Renewable energy and electric power liberalization have become important watchwords for present electric power systems. However, the stability of electric power systems is also a serious concern. Superconducting magnetic energy storage (SMES) systems are a promising candidate for the on-line evaluation of power system stability. From the viewpoint of the mobility of SMES systems, the authors carried out a design study on a 1 MJ-class mobile SMES system using MgB 2 Rutherford cables. The results showed that 1) the 1 MJ-class mobile SMES components can be installed in a 40 feet dry container; 2) because of the effect of the force-balanced coil design, the SMES coil can be excited up to 2.0 T or 3.0 T without reinforcements for the MgB 2 Rutherford cables; and 3) the 1 MJ-class mobile SMES coil can be cooled using 3 or 4 sets of conventional cryocoolers, including the cooling system for a 80 K thermal shield at a cooling temperature of 20 K or 10K. Therefore, the engineering feasibility of the 1 MJ-class mobile SMES system using MgB 2 Rutherford cables is confirmed.
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