Ground detection device

A grounding detection and grounding grid technology, applied in the direction of measuring device, fault location, measuring electrical variables, etc., can solve problems such as reducing the acceptance level and quality of grounding engineering design, and inaccurate grounding acceptance values.

Active Publication Date: 2020-02-11
CHINA GENERAL NUCLEAR POWER OPERATION +2
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Since the measured values ​​of step voltage and touch voltage are greatly affected by environmental factors, if only the measured values ​​are used, some grounding acceptance values ​​will often be inaccurate, which reduces the design acceptance level and quality of the grounding project

Method used

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Embodiment Construction

[0032] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0033] See figure 1 , The grounding detection device 100 in one embodiment is used to detect the target voltage of the grounding grid of the electrical equipment. Electrical equipment is equipment that needs to be grounded through a grounding grid to ensure equipment safety. The target voltage may include a step voltage and a contact voltage, or only the step voltage or the contact voltage. The grounding detection device 100 includes a housing (not shown in the figure), a power supply device 104, an analog short-circuit current generating device 106, an analog short-circuit current output int...

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Abstract

A grounding detection device comprises a shell. The shell is internally hollow to form a holding cavity. The grounding detection device also comprises a simulation short-circuit circuit output interface, a voltage detection interface, an input device and an output device which are fixed on the shell, and a power supply, a simulation circuit current generation device, a voltage detection device and a processing device which are fixed in the holding cavity. The input device is used for the personnel to input the physical parameters of the soil in the area where the grounding grid is located, the fault parameters of the electrical equipment with the grounding fault and the design parameters of the grounding grid, then the processing equipment is enabled to obtain the actual value of the target voltage, the required value of the target voltage and the theoretical value of the target voltage which are output by the output device. The grounding detection device can improve the acceptance accuracy and efficiency, is easy to carry, and can be applied to the design and acceptance stages.

Description

Technical field [0001] The present invention relates to the technical field of measuring tools, in particular to a grounding detection device. Background technique [0002] Grounding engineering design, acceptance, and grounding grid verification in the operation phase often take the grounding resistance value, step voltage, and contact voltage measurement values ​​as consideration standards. In this measurement method, there is no clear regulation on whether the step voltage and contact voltage values ​​are reasonable in design and whether the acceptance measurement is accurate. Because the measured values ​​of step voltage and contact voltage are greatly affected by environmental factors, if only the measured values ​​are used, some grounding acceptance values ​​are often inaccurate, which reduces the design acceptance level and quality of grounding projects. Summary of the invention [0003] Based on this, it is necessary to provide a grounding detection device that can improv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/165G01R31/08
CPCG01R19/16538G01R31/086
Inventor 赵军曾其权韩雪华陈晨黄杰
Owner CHINA GENERAL NUCLEAR POWER OPERATION
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