A Distributed Fault Detection and Isolation Method with Adaptive Characteristics

Abstract

The invention discloses a distributed fault checking and isolating method with an adaptive characteristic. The method is characterized in that when line fault of a transmission line is firstly detected, the automation of a distributed feeder is immediately started; fault positioning is firstly accomplished through information interchange of adjacent switch equipment; positioned faulty equipment is immediately subjected to tripping operation and then fault isolation according to a tripping mode. The method solves the problems in the traditional thinking that firstly whether permanent fault is required to be detected is firstly determined according to different logics, then direct tripping can be performed is determined, the automation of the distributed feeder is started, and fault isolation is accomplished after fault positioning, and the flow causes the problems that a set of independent logic program is required to be singly provided for each combination, and programs are required to be completely changed for all terminals if the scheme is changed, on-site maintenance is extremely complex, and mistakes are easy to cause.

Description

technical field [0001] The patent of the present invention belongs to the field of feeder automation technology of power distribution automation system, and in particular relates to a distributed fault detection and isolation method with adaptive characteristics. Background technique [0002] Feeder automation is a very important aspect of the distribution automation system. In practical applications, the primary system network structure faced by the feeder automation system is relatively complex. In terms of line types, it includes overhead lines, cable lines and overhead mixed lines. Among them, for overhead Lines and rack-mixed lines need to consider permanent faults and instantaneous faults, while cable lines only need to consider permanent faults; in terms of primary switch types, they include load switches and circuit breakers. When the primary switch is a circuit breaker, power distribution After the terminal detects a fault, it can directly operate at the outlet. Whe...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to provide a distributed fault detection and isolation method with adaptive characteristics, to solve the traditional thinking. According to different logics, first determine whether it is necessary to detect a permanent fault, and then determine whether it can be directly tripped, Then the distributed feeder is automatically started, and the fault isolation is completed after the fault is located; such a process makes it necessary to provide a set of independent logic programs for each combination. If the scheme changes, all terminals must be completely replaced. , leading to cumbersome and abnormal on-site maintenance, and problems that are prone to errors

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