The reliability-based model for superconducting fault current limiter

摘要

Distribution network has become more and more complex as mesh network to improve the distribution system reliability and increase the flexibility and agility of network operation. Also, as electric power demand of customers is constantly increasing, more bulk power systems are needed to install in a network By development of renewable energies and high-efficient facilities and deregulated electricity market, moreover, the amount of distributed resource is considerably increasing in distribution network consequently. These changes make fault current increase. Therefore, the fault current will exceed a circuit breaker capacity. In order to solve this problem, replacing breaker, changing operation mode of system and rectifying transformer parameters can be taken into account. The superconducting fault current limiter(SFCL) is one of the most promising power apparatus. Superconducting devices which are regarded as innovative technology have been developed in the field of power system. Especially, constant research has put SFCL to practical use in distribution network as well as in transmission network. In this paper, it suggests modeling techniques of SFCL based on a reliability and evaluates the reliability of distribution network which is connected with distributed generation according to the introduction of SFCL.