Rapid fault positioning method and system based on active power distribution network fault area division

Abstract

The invention provides a rapid fault positioning method and system based on active power distribution network fault area division. The method comprises the following steps: carrying out partition division on a fault section of an active power distribution network; carrying out fault positioning on the divided fault sections by adopting a fault positioning mathematical model; wherein in the fault positioning mathematical model, a particle swarm algorithm is adopted to carry out particle swarm position and speed updating, then particle fitness is calculated, then a particle library is updated, whether an optimal objective function is zero or not is judged, and when the optimal objective function is zero or the highest number of iterations is reached, an optimal solution, namely the specific position of the fault, is output. According to the method, the power distribution network area is firstly divided, then fault positioning is performed, accurate fault positioning after the fault occurs is realized, the line patrol burden can be reduced, the power failure area is reduced, the fault repair time is shortened, rapid and accurate fault positioning of the power distribution network is further realized, and the power supply reliability of the power distribution network is improved.

Description

technical field [0001] The invention belongs to the field of distribution network technology, and in particular relates to a fast fault location method and system based on active distribution network fault area division. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] The reliability analysis of active distribution network has gradually become an important part of the power system, and realizing the goal of safe and reliable power supply is one of the important contents of active distribution network construction. It is an urgent problem to be solved in the development of active distribution network to provide fast and accurate fault location algorithm for distribution network and realize stable and efficient operation of active distribution network. [0004] With the development of the active distribution network, its scale is getting la...

AI Technical Summary

Problems solved by technology

[0006] The fault area positioning of the traditional distribution network has the characteristics of occupying a large storage space, low fault tolerance, and a large amount of calculation. When the description matrix is ​​divided into blocks or the real-time information is distorted or incomplete, it is easy to cause misjudgment. , so that the fault location method of the traditional distribution network is no longer applicable

[0007] There are still some defects in the distribution network fault interval positioning algorithm: such as slow operation speed, complex programming, low fault identification efficiency, and unstable fault location results. At present, the switching function still exists after the fault of the active distribution network, and the power switching problem has not been fully considered. , it is impossible to distinguish between the fault and the real-time nature of the fault in the actual active distribution network, so it is easy to fall into a local optimal situation, which will directly lead to the failure of fault location in the active distribution network

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