Circuit breaker-based automatic fault processing method of local reclosing feeder

Abstract

The invention provides a circuit breaker-based automatic fault processing method of a local reclosing feeder. The circuit breaker-based automatic fault processing method comprises the steps of 1) configuring delay rapid-breaking protection and primary reclosing function in a circuit breaker at an outlet of a substation, and arranging circuit breakers at segmented switches and branch switches alonga line; 2) setting delay closing time T1 and closing determination time T2 of the segmented switches and the branch switches; 3) performing fault tripping; 4) performing fault isolation, and recovering power supply to an upstream load; and 5) recovering power supply to a fault downstream load, in which a contact switch is closed by a remote or manual operation mode so as to recover power supply to the upstream load. By the circuit breaker-based automatic fault processing method, the problem of reclosing for two times is needed to be configured for automation of a traditional voltage-time typeand voltage-current type reclosing feeder is solved, the influence of reclosing for many times on the load during the automatic fault processing process of the reclosing feeder is prevented, and thepower supply reliability and the high-quality service level of a power distribution line are greatly improved.

Description

technical field [0001] The invention relates to the technical field of distribution network, in particular to a circuit breaker-based on-site reclosing feeder automatic fault processing method. Background technique [0002] Feeder automation mainly includes centralized feeder automation, intelligent distributed feeder automation, and on-site reclosing feeder automation. The on-site reclosing feeder automation has the advantages of not relying on the communication and distribution automation master station for fault location, isolation, and power restoration. widely used. [0003] On-site reclosing feeder automation mainly includes voltage-time type and voltage-current time-type. Then, the traditional voltage-time type feeder automation adopts the strategy of “opening on loss of voltage and closing on delay on incoming power”. After tripping, regardless of whether there is a fault current on the line, the voltage-time switch will trip, causing multiple actions of the switch ...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an automatic fault handling method for on-site reclosing feeders based on a circuit breaker, which solves the problem that recloser feeders such as traditional voltage-time type and voltage-current-time type recloser-type feeder automation need to configure two reclosing switches, and avoids recloser-type feeder The influence of multiple reclosing on the load and the switch body during the process of automatic fault handling, only one reclosing of the circuit breaker at the outlet of the substation can realize the fault location, isolation and restoration of power supply of the distribution line, which greatly improves the reliability of the distribution line. Power supply reliability and quality service levels

Images