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Power transmission line tower impulse grounding resistance test method

A technique for impacting grounding resistance and transmission lines, which is applied in grounding resistance measurement, short-circuit test, measuring resistance/reactance/impedance, etc. It can solve problems such as large-scale power outages, casualties, and inaccurate measurement of impacting grounding resistance, and achieve accurate data Effect

Inactive Publication Date: 2020-09-29
湖北宏源电力科技有限公司
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Problems solved by technology

The grounding resistance value reflects the good degree of contact between the electrical device and the "ground" and reflects the scale of the grounding grid. Due to the inaccurate measurement of the impact grounding resistance, large-scale power outages and casualties are often caused by lightning strikes. Therefore, the impact grounding resistance of the power line tower Accurate measurement is extremely important to ensure the safety of nearby personnel and the stable operation of the transmission system. For this reason, we propose a transmission line tower impact grounding resistance test method to solve the above problems

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  • Power transmission line tower impulse grounding resistance test method

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Embodiment Construction

[0020] Attached below figure 1 The specific implementation manner of the present invention will be described in further detail.

[0021] Depend on figure 1 Given, the test method for transmission line tower impact grounding resistance includes the following steps

[0022] S1. Before use, read the manual of the grounding resistance tester and check whether the grounding resistance tester is normal;

[0023] S2. Taking the transmission tower 1 under test as the center of the circle, take several placement points 2 of grounding resistance testers on the ground;

[0024] S3. Clean up the placement point 2, and place the ground resistance tester flat on the placement point 2;

[0025] S4. Take the transmission tower 1 under test as the center, radiate to the placement point 2, and take the potential pole 3 and the current pole 4 on the extension line of the radiation;

[0026] S5. Insert the grounding rod at the potential pole 3 and the current pole 4, connect the test line to ...

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Abstract

The invention discloses a power transmission line tower impulse grounding resistance test method. The method comprises the steps of S1, reading a specification of a grounding resistance tester beforeuse and checking whether the grounding resistance tester is normal or not; S2, taking a plurality of placement points of the grounding resistance tester on the ground by taking the measured power transmission tower as a circle center; S3, cleaning the placement points, and horizontally placing the grounding resistance testers on the placing point; and S4, carrying out radiation on the placement points by taking the measured power transmission tower as the center, and taking a potential pole and a current pole on the extension line of the radiation. According to the invention, the plurality ofplacement points are arranged on the side surface of the power transmission tower at equal intervals, outward radiation is conducted according to the connecting line of the power transmission tower and the placement points, the grounding resistance testers, the potential pole and the current pole are arranged on the radiation line, and the average value is calculated through multiple times of measurement, so that the measured data is more accurate.

Description

technical field [0001] The invention relates to the technical field of lightning protection detection, in particular to a method for testing the impact grounding resistance of transmission line towers. Background technique [0002] Grounding resistance is the resistance encountered when the current flows from the grounding device into the ground and then flows to another grounding body or spreads far away through the ground. The grounding resistance value reflects the good degree of contact between the electrical device and the "ground" and reflects the scale of the grounding grid. Due to the inaccurate measurement of the impact grounding resistance, large-scale power outages and casualties are often caused by lightning strikes. Therefore, the impact grounding resistance of the power line tower Accurate measurement is extremely important to ensure the safety of nearby personnel and the stable operation of the transmission system. For this reason, we propose a test method for...

Claims

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Application Information

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IPC IPC(8): G01R27/20G01R31/52
CPCG01R27/205G01R31/52
Inventor 宋飞张晓喜范威吉祥胡学雷
Owner 湖北宏源电力科技有限公司
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