抄録
As energy storage equipment for electric power systems, superconducting magnetic energy storage (SMES) systems have good characteristics such as high efficiency, quick response and no deterioration under repeated operations. Since 1991, a national project by the Agency for National Resources and Energy Japan has been carried out to develop an SMES system for power control in a power system. Moreover, SMES has been developed as a bridge for instantaneous voltage dips since 2003. In this issue, cooling systems and cryocoolers for SMES are introduced.
