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Microgrid fault positioning method based on simulation

A technology of fault location and microgrid, which is applied in the direction of fault location, fault detection according to conductor type, and measurement of electricity, can solve the problems of inability to locate microgrid faults, low positioning efficiency, complexity and changeability, etc., to reduce fault processing time, The effect of preventing loss and reducing errors

Pending Publication Date: 2020-11-20
HXXN ELECTRICITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many types of microgrid faults, and they are complex and changeable. Traditional methods cannot locate microgrid faults with high precision, and the positioning efficiency is low.

Method used

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  • Microgrid fault positioning method based on simulation
  • Microgrid fault positioning method based on simulation
  • Microgrid fault positioning method based on simulation

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A simulation-based microgrid fault location method specifically includes the following steps:

[0044] S1: Connect a microgrid fault detection device at each node of the microgrid;

[0045] S2: Each fault detection device collects the signal of each node's microgrid state change, and the fault detection device performs noise reduction and denoising processing on the signal;

[0046] S3: The microprocessor extracts state features from the state change signal of the microgrid, and processes the extracted features;

[0047] S4: According to the state characteristics of the microgrid, identify the fault type of the microgrid, analyze the data of the fault of the microgrid through the experimental simulation, and display the fault type and simulation data on the display, and the alarm on the corresponding microgrid fault detection device sends out an alarm , to remind the staff to locate and process the microgrid.

[0048] The state feature extraction of the microgrid incl...

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Abstract

The invention relates to the technical field of power grid detection, in particular to a microgrid fault positioning method based on simulation. The microgrid fault type can be identified according tothe state characteristics of the microgrid, the microgrid fault is subjected to data analysis through experimental simulation, the fault type and simulation data are displayed on the display, and thealarm on the corresponding microgrid fault detection device gives an alarm to remind a worker of positioning and processing the microgrid. According to the invention, microgrid fault node positioningcan be realized accurately and rapidly; the fault location in the microgrid is accurately positioned, the fault processing time is reduced, the error of microgrid fault location is reduced, the overall effect of microgrid fault location is superior to that of a traditional method, the method has obvious advantages, the arranged alarm gives an alarm to the faulted microgrid, and the display can display the fault type of the microgrid.

Description

technical field [0001] The invention relates to the technical field of power grid detection, in particular to a simulation-based micro-grid fault location method. Background technique [0002] Microgrid is a small power generation and distribution system composed of distributed power supply, energy storage device, energy conversion device, phase load and monitoring and protection device. It is an autonomous system that can realize self-control, protection and management. Under normal conditions, the microgrid is connected to the distribution network through a static switch and operates as a controllable unit connected to the grid (grid-connected mode); The isolation of the power grid operates as an autonomous system island (island mode) to prevent grid failure from affecting the normal operation of loads in the microgrid. Usually a small microgrid system includes multiple distributed power sources, energy storage devices and a large number of loads. The most important rese...

Claims

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Application Information

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IPC IPC(8): G01R31/08
CPCG01R31/088G01R31/086
Inventor 陈庆辉彭海波
Owner HXXN ELECTRICITY