Power distribution network fault positioning method and system

A technology of distribution network fault and location method, applied in fault location, information technology support system, fault detection according to conductor type, etc. The effect of location and quick positioning

Pending Publication Date: 2021-11-23
南京软核科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, based on the fault location method of reclosers and sectionalizers, it is difficult to determine the fault of the junction section of the sectional switch, and it is impossible to locate multiple faults
The fault location method based on artificial intelligence can accurately locate the faulty equipment, but it has a large amount of calculation and poor real-time performance

Method used

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  • Power distribution network fault positioning method and system
  • Power distribution network fault positioning method and system
  • Power distribution network fault positioning method and system

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Embodiment 1

[0038] refer to figure 1 , which is the first embodiment of the present invention, this embodiment provides a distribution network fault location method, including:

[0039] S1: Use the collection module 100 to collect relevant information about the distribution network.

[0040] It should be noted that, the collection module 100 collects relevant information of the distribution network through the RTU, including three-phase current, three-phase voltage, current over-limit remote signaling signal and switch status.

[0041] S2: Establish a network topology structure through the network topology module 200 according to relevant information.

[0042] Define circuit breakers, tie switches, and section switches in the distribution network as nodes; transmission lines as branches; distribution transformers and feeders as components; power flow from the power supply to the feeder as the positive direction of the components;

[0043] refer to figure 1 , the network topology includes...

Embodiment 2

[0074] refer to Figure 2 ~ Figure 3 , is the second embodiment of the present invention, which is different from the first embodiment in that it provides a distribution network fault location system, including:

[0075] The collection module 100 collects switch information of the distribution network; the relevant information of the distribution network includes three-phase current, three-phase voltage, current over-limit remote signaling signal and switch status.

[0076] The network topology module 200 is connected with the collection module 100 and is used to establish a network topology structure according to the switch information.

[0077] The optimization module 300 is connected with the network topology module 200, and is used to establish a switching function according to the network topology, and obtain an optimal solution of the switching function, so as to locate faulty equipment in the distribution network.

[0078] Wherein, the optimization module 300 also incl...

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Abstract

The invention discloses a power distribution network fault positioning method and system, and the method comprises the steps: collecting the related information of a power distribution network through a collection module; establishing a network topology structure through a network topology module according to the related information; establishing a switching function according to the network topology structure, and solving an optimal solution of the switching function by using an optimization module so as to position fault equipment in the power distribution network; by simplifying the power distribution network, the fault equipment of the power distribution network can be positioned more quickly, and meanwhile, automatic optimization and accurate detection of the fault position of the power distribution network are realized by establishing the switching function and combining the genetic algorithm.

Description

technical field [0001] The invention relates to the technical field of power system fault location, in particular to a distribution network fault location method and system. Background technique [0002] Realizing fault location and isolation is one of the key technologies of distribution automation, and it is also a research hotspot at home and abroad. In the distribution network, due to the malfunction and refusal of the switch, the fault section cannot be judged directly according to the action of the switch. There are two main ways to realize the fault location of distribution network: one is fault location based on recloser and sectionalizer; the other is fault location based on artificial intelligence. [0003] However, based on the fault location method of the recloser and the sectionalizer, it is difficult to judge the fault of the junction section of the sectional switch, and it is impossible to locate multiple faults. The fault location method based on artificial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08G06N3/12
CPCG01R31/086G01R31/088G06N3/126Y04S10/52
Inventor 朱勇陶用伟李泽群何静王常沛石祖昌蒋友权杨键郑华邓钦张韵韩旭华张林曼徐坤潘云刘豪马春生刘岑俐刘琼时敏张英杨琼潘光俐
Owner 南京软核科技有限公司
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