Superconducting state information-based power distribution network self-healing system and method

Abstract

The invention relates to a superconducting state information-based power distribution network self-healing system and method, wherein a first feeder line of a power distribution network is connected with a second feeder line by an interconnection switch, and substation outlet circuit breakers are arranged at the initial ends of the first feeder line and the second feeder line, and provided with a superconducting short circuit current limiter SFCL and a distributive FA controller; a feeder line automation control terminal FTU and a distributive FA controller are respectively arranged on section switches of the first feeder line and the second feeder line; and the feeder line automation control terminal FTU is connected on the feeder line of the power distribution network by a mutual inductor, the superconducting short circuit current limiter SFCL is directly connected on the feeder line of the power distribution network, and the distributive FA controllers conduct information interaction by an optical communication system. Based on the change information of the superconducting state of the superconducting short circuit current limiter SFCL in fault period of the power distribution network, the superconducting state information-based power distribution network self-healing system is established, the fault isolation and power restoration of the power distribution network can be realized before relay protection action of the power distribution network, and the fast self-healing function of the power distribution network under the condition of no power lose can be realized.

Description

technical field [0001] The invention relates to the field of distribution networks, in particular to a distribution network self-healing system based on superconducting state information and a method thereof, which is a distribution system that uses the information of a superconducting short-circuit current limiter during a short-circuit failure of the power grid as the main criterion. Net self-healing system. Background technique [0002] Distribution Automation (DA) is a comprehensive information management system integrating computer technology, data transmission, control technology, modern equipment and management. Reduce operating costs and reduce the labor intensity of operators. In industrially developed countries, distribution system automation has received extensive attention. [0003] With the implementation of a new round of distribution automation pilot projects in my country, the intelligent distributed feeder automation system (Feeder Automation, FA), because...

AI Technical Summary

Problems solved by technology

[0005] The traditional distribution network self-healing method requires the relay protection action of the distribution network due to the large short-circuit current during the fault period. After the power failure, the fault isolation and the restoration of power supply in the non-fault area are realized. The user must experience the short-term power outage process.

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