Power failure line positioning method

Abstract

The invention discloses a power failure line positioning method, which comprises the following steps of: according to fault current information uploaded by a feeder terminal unit, simplifying a switchnode for fault positioning of a power distribution network by using an active tree and passive tree simplification model; encoding switch fault current information and line state information; establishing a switch function, wherein solutions of the switch function can convert the line state information into corresponding switch fault current information; evaluating the advantages and disadvantages of each solution by using an objective function; and finding out the optimal solution under a multi-target fitness function by calculating the overall fitness based on the Pareto optimal concept, soas to obtain the positioning of the fault line. According to the power failure line positioning method adopted by the invention, the operation dimension and the number of iterations can be greatly reduced, the operation speed is increased, the timeliness is improved, and the positioning process has very good fault tolerance performance, so that the accuracy is greatly improved.

Description

technical field [0001] The invention relates to the field of distribution network faults, in particular to a method for locating power fault lines Background technique [0002] As the basic industry of the national economy, electric power plays an important role in supporting and guaranteeing economic and social development and people's lives. No matter what kind of emergency occurs, electric power safety is the primary concern in public safety, which makes the electric power emergency plan The position in electric power safety is particularly important. With the continuous development of the Internet of Things technology, various substations and regional distribution networks have increasingly become an interrelated whole, and their degree of automation has also continued to increase. There are various types of faults in the operation of substations and distribution networks. The practicability, simplicity, and operability of the line positioning method also put forward hi...

AI Technical Summary

Problems solved by technology

When a fault occurs in the distribution network, the existing emergency plans of power companies continue to expose the disadvantages of complexity and low efficiency. Most of the existing power emergency positioning methods are based on static scripts, and the occurrence and development of power accidents are mostly random. , which makes the accuracy and timeliness of the fault response not well guaranteed, and it is difficult to efficiently and accurately segment the fault area in a short period of time, which causes troubles for subsequent troubleshooting and leads to more Economic losses

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