Grounding resistance calculation method, device and terminal equipment of tower grounding device

A grounding device and grounding resistance technology, applied in the direction of grounding resistance measurement, etc., can solve the problem of inaccurate grounding resistance resistance value, achieve the effect of accurate grounding resistance value data, solve the inaccurate grounding resistance resistance value, and easy to implement on-site

Active Publication Date: 2022-07-19
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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  • Application Information

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Problems solved by technology

[0006] The invention provides a grounding resistance calculation method, device and terminal equipment of a tower grounding device, which are used to solve the existing technical problem that the grounding resistance value of the tower grounding resistance is inaccurately measured by using a three-pole method or a clamp meter method

Method used

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

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Experimental program
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Effect test

Embodiment 1

[0077] figure 1 It is a flow chart of the steps of the grounding resistance calculation method of the tower grounding device according to the embodiment of the present invention, figure 2 The circuit diagram of the equivalent resistance network of the grounding resistance test of the grounding resistance calculation method of the tower grounding device according to the embodiment of the present invention, image 3 The first multi-terminal network circuit model diagram of the tower grounding device according to the method for calculating the grounding resistance of the tower grounding device according to 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 method for calculating the grounding resistance of the tower grounding device according to the embodiment of the present invention, Figure 5 The third multi-terminal network circuit model diagram of the tower grounding device a...

Embodiment 2

[0162] An embodiment of the present invention also provides a grounding resistance calculation device for a tower grounding device, which is applied to a transmission tower, and uses a grounding resistance test 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 calculation device 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;

[0163] 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...

Embodiment 3

[0183] Embodiments of the present invention also provide a computer-readable storage medium, where the computer storage medium is used to store computer instructions, which, when running on the computer, enable the computer to execute the above-mentioned method for calculating the grounding resistance of the tower grounding device.

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Abstract

The invention relates to a grounding resistance calculation method, device 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. The grounding resistance of the tower grounding device is obtained by obtaining three sets of measured current data and analyzing and calculating them to obtain the grounding resistance of the tower grounding device. The grounding resistance value data of the tower grounding device is accurate, and the problem of inaccurate grounding resistance value measured by the existing three-pole method or the clamp meter method for the grounding resistance of the tower is solved. 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 calculation method, device and terminal equipment of a tower grounding device. Background technique [0002] Overhead transmission lines are an important part of the power grid. Due to long-term exposure to the atmospheric environment, they have become the weakest link in power equipment that suffers from lightning strikes. The reliability of lightning protection operation directly determines the safety of power system operation. This is especially the case in the southern region with strong activity, where lightning damage is frequent on transmission lines, making lightning protection the most basic work for the operation of transmission lines. [0003] At present, the effective dredging of the lightning current on the transmission line is the key to the lightning protection work of the transmission line. Therefore, the grounding...

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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