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Calculation Model of Grounding Resistance

A technology for calculating models and grounding resistances, applied in the field of simulation algorithms, which can solve problems such as large number of grids, occupying too many computing resources, and large computing area space.

Active Publication Date: 2021-09-14
ARMY ENG UNIV OF PLA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the existing calculation model of grounding resistance, it is necessary to introduce a reference conductor and a horizontal connection line connecting the reference conductor and the tested grounding conductor. When using the FDTD method to calculate the resistance of the tested grounding conductor, It will lead to a large space in the calculation area, so that the number of grids of the FDTD method is very large, which will take up too many computing resources, and even make ordinary computers unable to perform such calculation tasks

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  • Calculation Model of Grounding Resistance
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Embodiment Construction

[0026] Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. Rather, the embodiments are provided to explain the principles of the invention and its practical application, thereby enabling others skilled in the art to understand the invention for various embodiments and with various modifications as are suited to particular intended uses.

[0027] In order to compare with the calculation model of the ground resistance of the example of the present invention, the calculation model of the ground resistance of the prior art will be described in detail below. Among them, the calculation of the impulse voltage (or transient voltage) and impulse current (or transient current) of the grounding conductor is mainly described in detail. It should be understood t...

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Abstract

The invention discloses a calculation model of grounding resistance. The calculation model includes: a convolution complete matching layer, an ideal conductor layer, a grounding conductor and a lead wire; the convolution complete matching layer is used to determine the calculation area, and the ideal conductor layer covers the convolution complete On the matching layer, the grounding conductor is arranged in the ground in the calculation area, and the lead wires are respectively connected to the grounding conductor and the ideal conductor layer. The present invention omits the horizontal connection line and the reference conductor, avoids the reflection of the horizontal connection line and the reference conductor, makes it possible to accurately simulate the impact resistance of the ground conductor with only a small calculation area, and greatly reduces the calculation occupied by the simulation resource.

Description

technical field [0001] The invention belongs to the technical field of simulation algorithms, and in particular relates to a calculation model of grounding resistance. Background technique [0002] The traditional calculation model of grounding resistance is consistent with the test model of power frequency resistance, which is widely used in the analysis of grounding system and the approximate accuracy analysis of thin wires. [0003] When using the finite time domain difference method (FDTD method) to analyze the electromagnetic field problem of grounding resistance, the smaller the grid size in the FDTD method, the higher the simulation accuracy; generally the grid size is required to be much smaller than the size of the grounding conductor to be tested. In the existing calculation model of grounding resistance, it is necessary to introduce a reference conductor and a horizontal connection line connecting the reference conductor and the tested grounding conductor. When us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R27/20G01R27/08G01R15/14
CPCG01R15/148G01R27/08G01R27/20
Inventor 殷勤熊润杨文赵杰韩彪朱文洋吴培仁朱洪彬刘思源王文文彭尧尧王东
Owner ARMY ENG UNIV OF PLA
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