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Grounding resistance testing method and system of tower grounding device and terminal equipment

A technology of grounding resistance testing and grounding device, applied in the direction of grounding resistance measurement, etc., can solve the problems of inaccurate and difficult measurement of grounding resistance value data of towers, so as to solve the problem of inaccurate resistance value data, simple operation, and grounding resistance value data. accurate effect

Active Publication Date: 2021-01-29
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides a grounding resistance testing method, system and terminal equipment of a tower grounding device, which are used to solve

Method used

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  • Grounding resistance testing method and system of tower grounding device and terminal equipment
  • Grounding resistance testing method and system of tower grounding device and terminal equipment
  • Grounding resistance testing method and system of tower grounding device and terminal equipment

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Experimental program
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Effect test

Embodiment 1

[0062] figure 1 It is a flow chart of the steps of the grounding resistance testing method of the tower grounding device described in the embodiment of the present invention, figure 2 It is a frame diagram of the grounding resistance testing method grounding resistance testing device for the tower grounding device described in the embodiment of the present invention, image 3 It is the first multi-terminal network circuit model diagram of the tower grounding device of the grounding resistance test method of the tower grounding device described in the embodiment of the present invention, Figure 4 It is the second multi-terminal network circuit model diagram of the tower grounding device of the grounding resistance test method of the tower grounding device described in the embodiment of the present invention, Figure 5 It is the third multi-terminal network circuit model diagram of the tower grounding device according to the grounding resistance testing method of the tower gr...

Embodiment 2

[0152] The embodiment of the present invention also provides a grounding resistance testing system for a tower grounding device, which is applied to a power transmission tower, and uses a grounding resistance testing device to test the current of the tower grounding device. The tower grounding device includes a tower structure, and the tower structure includes at least four tower feet and the tower body, the grounding resistance testing system of the tower grounding device includes a measurement wiring unit, a current measurement unit and an analysis and calculation unit, and the current measurement unit includes a first measurement subunit, a second measurement subunit and a third measurement subunit;

[0153] The measurement wiring unit is used to select one tower foot of the tower grounding device as the measurement point, the grounding wires of the other three tower feet of the tower grounding device are all disconnected from the tower structure, and the grounding wires of t...

Embodiment 3

[0162] An embodiment of the present invention also provides a computer-readable storage medium, which is used to store computer instructions, and when it is run on a computer, the computer executes the above grounding resistance testing method for a tower grounding device.

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Abstract

The invention relates to a grounding resistance test method and system for a tower grounding device and terminal equipment, which are applied to a power transmission tower. The current of the tower grounding device is measured by adopting a non-contact current measurement unit under three wiring modes and different voltage excitation signals to obtain three groups of current measurement values, and the three groups of current measurement values are analyzed and calculated to obtain the grounding resistance of the tower grounding device. According to the grounding resistance test method for thetower grounding device, the influence of mutual resistance is shielded in the measurement process by adopting three wiring modes, so that the obtained grounding resistance value data of the tower grounding device is accurate, and the technical problems that the tower grounding resistance is difficult to measure and the measured resistance value data is inaccurate in the prior art are solved. Thegrounding resistance testing device does not need on-site wiring in the process of measuring the grounding resistance of the tower grounding device, and the non-contact measurement enables the operation to be simple and is easy to implement on site.

Description

technical field [0001] The invention relates to the technical field of lightning protection and grounding, in particular to a grounding resistance testing method, system and terminal equipment of a tower grounding device. Background technique [0002] The high-voltage overhead transmission line is the main channel for power transmission, and its operating status directly determines the safety of the power system operation. Due to the large volume and wide area, lightning strikes are one of the main reasons for tripping or even accidents on overhead transmission lines, especially in the southern region. The activity is strong, resulting in frequent lightning damage on transmission lines. [0003] At present, it is the key to lightning protection of transmission lines to limit the abnormal rise in ground potential caused by lightning strikes on the top of transmission line towers or lightning conductors, and the level of ground potential on the top of towers is not only relate...

Claims

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Application Information

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IPC IPC(8): G01R27/20
CPCG01R27/20
Inventor 李谦胡晓晖魏俊涛
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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