Power distribution network fault positioning method, terminal equipment and storage medium

A distribution network fault and positioning method technology, which is applied in the direction of fault location, fault detection according to conductor type, and electrical measurement, can solve problems such as intermittent, misjudgment of positioning system, fault current and FTU device sensitivity reduction, etc., to achieve Good fault tolerance, fast positioning effect

Pending Publication Date: 2022-01-18
JIMEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the distribution network with distributed generation (DG) is a multi-power system. The power generation characteristics of DG power supply are unstable, intermittent, easily affected by the environment, and have small reserves. It has a direct impact on the operating characteristics of the state, and with the access of the DG power supply, the power flow will be reversed, and the voltage at each point of the switch on the feeder section will increase significantly, which will affect the diagnostic accuracy of the positioning system.
like figure 1 As shown, if the feeder section L3 fails: when the DG power supply is not connected to the power grid, the FTU (distribution switch monit

Method used

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  • Power distribution network fault positioning method, terminal equipment and storage medium
  • Power distribution network fault positioning method, terminal equipment and storage medium
  • Power distribution network fault positioning method, terminal equipment and storage medium

Examples

Experimental program
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Example Embodiment

[0031] Example 1:

[0032] The embodiment of the present invention provides a distribution network fault location method, such as figure 2 As shown, the method includes the following steps:

[0033] S1: Collect the fault current information of each switch in the distribution network when the fault occurs, and convert it into the actual fault state of each switch.

[0034] In this embodiment, the fault current information of each switch is collected by the FTU device.

[0035] Combined with the FTU data monitoring scheme and the actual situation of the ship's navigation, with the modernization and large-scale of the ship and its equipment, the precision and wiring density of the equipment in the ship's engine room have been continuously improved, resulting in low transmission efficiency and poor effectiveness of the traditional wiring monitoring scheme. , and the anti-interference ability is insufficient, so it is very necessary to improve the monitoring effectiveness and re...

Example Embodiment

[0061] Embodiment two:

[0062] The present invention also provides a distribution network fault location terminal device, including a memory, a processor, and a computer program stored in the memory and operable on the processor, and the computer program is implemented when the processor executes the computer program. Steps in the above method embodiment of Embodiment 1 of the present invention.

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Abstract

The invention relates to a power distribution network fault positioning method, terminal equipment and a storage medium, and the method comprises the steps: S1, collecting fault current information of each switch in a power distribution network when a fault occurs, and converting the fault current information into an actual fault state of each switch; s2, iteratively updating the state of each feeder line section in the power distribution network through an improved quantum genetic algorithm, constructing a fitness function so as to enable the difference between the actual fault state and the expected fault state of each switch to be minimum, and extracting the state of each feeder line section when the fitness function is maximum in the iteration process; and S3, positioning the fault of the feeder line segment in the power distribution network according to the extracted state of each feeder line segment. According to the method, normal and continuous power supply to the load can still be ensured under the condition that a large number of sustainable distributed power supplies are connected into the ship power distribution network, the feeder line fault section can still be quickly positioned under the complex ship navigation environment, and the method has good fault tolerance.

Description

technical field [0001] The invention relates to the field of fault detection, in particular to a distribution network fault location method, terminal equipment and storage medium. Background technique [0002] In today's environment of energy conservation and emission reduction, with the continuous development of the modern shipbuilding industry, ship energy has gradually become sustainable, and a series of renewable new energy sources such as solar energy, wind energy, fuel cells, and biomass energy have received extensive attention. The shipping sector continues to expand the application of green energy on ships. However, because the power generation characteristics of new energy sources are unstable, intermittent, susceptible to environmental influence, and small in reserves, which have a direct impact on the transient and steady-state operation characteristics of the entire ship distribution network, currently only renewable energy can be used. Energy is used on small o...

Claims

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Application Information

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IPC IPC(8): G01R31/08G06N3/12G06N10/60
CPCG01R31/086G01R31/088G06N10/00G06N3/126
Inventor 周海峰郑聪卢其炎郑东强肖钟湧林开荣林忠华李寒林关天敏陈虹宇汪海志雷慧
Owner JIMEI UNIV
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