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A new proton accelerator complex for a high intensity beam (Japan Particle Accelerator Research Complex—J-PARC) is under construction at the Tokai campus of Japan Atomic Energy Research Institute as a joint project between KEK and JAERI. The accelerator complex is composed of a 600 MeV linac, a 3 GeV rapid cycling synchrotron, and a 50 GeV main synchrotron. In Phase I, the main synchrotron will be operated at energy of 40 GeV with pulse operation. The proton energy is to be increased up to 50 GeV in Phase II, and a large amount of pulse electric power, which is + 115 MW and -55 MW peak-to-peak with 3.4-second repetition, will be demanded. Such large pulse power will give un-allowed disturbances to the power network. Some means will be required for compensating the pulse electric power and reducing the disturbances. A SMES system is one of the promising means. We have studied a SMES system for this purpose, designed the SMES coils using a force-balanced coil and a solenoid with a capacity of 100 M J/55 MW, and proposed a new circuit scheme. The cost estimation of the SMES system is also described. [ABSTRACT FROM AUTHOR]

This paper describes the development of the reliability analysis system for transmission systems from primary substations on high-voltage trunk line systems to distribution substations. This system has been developed on an engineering workstation. The user can input the network data of power systems from primary substations to distribution substations and the structure of bases and connections of transforms in substations using graphics. This analysis system can evaluate reliability at each distribution substation by simulating outage and recovery process for all fault modes which can occur, defining the capacity of facilities, probability of fault at each facility, the value of load at each bank, and the points where switching elements are turned off in the network as input data. In the calculation of the recovery process of each fault mode, the constraints of operation of radial power systems are considered. [ABSTRACT FROM AUTHOR]