Earth resistance metering device
A measurement device and grounding resistance technology, applied in the field of electric power equipment, can solve problems such as unrepresentative data, hidden dangers of system accidents, damage, etc., to avoid arbitrariness and inconsistency, eliminate high costs, and accurately detect data Effect
Inactive Publication Date: 2010-12-22
天津市中力防雷技术有限公司
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[0003] At present, the grounding device adopts a metal structure and is buried below the ground. It is usually affected by many on-site environments, which makes the grounding resistance value inconsistent with the installation. For example, the decline of groundwater level and the evaporation of soil moisture all lead to the increase of soil resistivity. , so that the grounding resistance value increases, and the grounding device is buried underground for a long time, and its own corrosion changes will also cause changes in resistivity
The increase of the grounding resistance value will directly affect the effect of lightning protection, and even lead to abnormal operation and damage of system equipment. Therefore, it is very necessary to know the status of the grounding resistance in real time
[0004] In the prior art, the grounding resistance measurement measure is to manually measure and record the grounding resistance of the grounding device every year. If the requirements cannot be met, the grounding device must be modified or reset.
The problems of this method are: 1. The cost of manual measurement processin
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[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0022] Such as Figure 1-2 As shown: 1 is the ground, 2 is the measuring device, 21 is the remote device, 22 is the near-end device, 23 is the detection device, 231 is the communication unit, 232 is the control unit, 24 is the grounding device, 5 is the buried device.
[0023] A grounding resistance measuring device, comprising a buried device and a detection device, the detection device is connected to a grounding device, the buried device and the detection device are connected through wires, the buried device and the grounding device are both arranged below the ground, the The detection device obtains the grounding resistance data through the connection measurement with the buried device and the grounding device.
[0024] The buried device includes a remote device and a proximal device, which are connected with the detection device.
[0025] A contr...
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The invention relates to an earth resistance metering device which is mainly composed of an underground device and a detection device, wherein the detection device is connected with an earth device, the underground device is connected with the detection device by leads, the underground device and the earth device are both arranged below the ground, and the detection device is connected with the underground device and the earth device to measure and obtain the data of earth resistance. The earth resistance metering device saves cost, improves measurement precision and can update measurement data in real time if being compared with manual measurement.
Description
technical field [0001] The invention relates to the field of electric power equipment, in particular to a device and system for measuring grounding resistance. technical background [0002] Lightning is a special weather phenomenon caused by the discharge of cloud in the air. Lightning is an important cause of damage to electronic equipment, which threatens the safe and stable operation of electronic information systems in various fields such as construction, railways, civil aviation, communications, industrial control, and military. Lightning protection is one of the measures to solve the above problems. In the current field of lightning protection, the setting of grounding devices has become one of the most critical links. It not only involves lightning discharge, but also has more to do with personal safety, equipment safety and system normality. Now various technical standards and specifications have express provisions on the specific settings of the grounding device, s...
Claims
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Inventor 孙巍巍
Owner 天津市中力防雷技术有限公司