Low-current single-phase ground fault location method based on hierarchical agent intelligent decision-making

Abstract

The invention relates to the power distribution system grounding fault diagnosis technology field and especially relates to a low-current single-phase grounding fault positioning method based on a hierarchical agent intelligent decision. The method comprises the following steps of constructing a power distribution network distributed control framework based on the hierarchical agent intelligent decision; establish a single-phase grounding fault processing mode; monitoring a single-phase grounding fault condition of multiple tie lines of a target transformer substation in real time through thepower distribution network distributed control framework; collecting fault data by the power distribution network distributed control framework; analyzing the fault data by the power distribution network distributed control framework; determining an area where a single-phase grounding fault is located; generating an opening operation judgment result by the power distribution network distributed control framework and sending to the area where the single-phase grounding fault is located so as to carry out opening operation. A multi-agent technology is used to solve problems that traditional power distribution network single-phase grounding fault positioning efficiency is low, a fault characteristic is not obvious and so on.

Description

technical field [0001] The invention relates to the technical field of ground fault diagnosis of power distribution systems, in particular to a small current single-phase ground fault location method based on hierarchical agent intelligent decision-making. Background technique [0002] As an important part of the power system, the distribution network undertakes the power supply service function of most power users. It is the key to ensuring power supply and the most important link that affects the reliability of power supply. At this stage, the structure of my country's distribution network is mainly a single-power radial distribution line. The neutral point of the 10-35kV distribution system mostly adopts a non-effective grounding method, that is, the neutral point is not grounded or grounded through an arc suppression coil. When a single-phase ground fault occurs in this type of system, since the loop can only be formed through the ground capacitance, the fault current is...

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Problems solved by technology

[0006] In view of this, the purpose of the present invention is to address the deficiencies in the prior art, provide a small current single-phase ground fault location method based on hierarchical agent intelligent decision-making, and solve the problem of low efficiency of single-phase ground fault location in traditional distribution networks and fault characteristics Obvious issues

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