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Grounding resistance test method, system and terminal equipment of tower grounding device

A grounding resistance test and grounding device technology, applied in the direction of grounding resistance measurement, etc., can solve the problems of inaccurate grounding resistance resistance value data and difficult measurement of towers, and achieve inaccurate resistance value data, simple operation, and grounding resistance value data. accurate effect

Active Publication Date: 2022-07-12
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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  • 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 the existing technical problems that it is difficult to measure the grounding resistance of a tower and the measured resistance value data is inaccurate

Method used

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

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Embodiment 1

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

Embodiment 2

[0152] An embodiment of the present invention also provides a grounding resistance testing system for a tower grounding device, which is applied to a transmission tower, and uses the 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 test 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 the four ...

Embodiment 3

[0162] Embodiments of the present invention further provide a computer-readable storage medium, where the computer storage medium is used to store computer instructions, which, when running on a computer, enable the computer to execute the above-mentioned grounding resistance testing method for a tower grounding device.

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Abstract

The invention relates to a grounding resistance testing method, system and terminal equipment of a tower grounding device, which is applied to a transmission tower. Under three wiring modes and different voltage excitation signals, a non-contact current measuring unit is used to measure the tower grounding device. Three groups of current measurement values ​​are obtained, and the grounding resistance of the tower grounding device is obtained by analyzing and calculating the three groups of current measurement values. The grounding resistance test method of the tower grounding device adopts three wiring methods to shield the influence of mutual resistance during the measurement process, so that the obtained grounding resistance value data of the tower grounding device is accurate, and the existing difficulty in measuring the grounding resistance of the tower and the measured resistance are solved. Technical issues with inaccurate value data. The grounding 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 makes the operation simple and 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] High-voltage overhead transmission lines are the main channel of power transmission, and their operating status directly determines the safety of power system operation. Due to the large volume and wide area, lightning strikes are one of the main reasons for overhead transmission lines to trip or even accidents, especially in southern areas. The activity is intense, 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 of ground potential caused by lightning strikes on tower tops or lightning protection lines of transmission lines. Dispersion capacity. The tower grounding device is used as a channel for dredging...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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