A graphite-type grounding resistance reduction module

Abstract

The invention discloses a graphite type grounded resistance reducing module. The graphite type grounded resistance reducing module comprises a graphite body and an electrode connected to the graphite body, wherein the graphite body is cylindrical. The outside surface of the graphite body is formed by connecting 8-12 inwards recessed arc surfaces. Multiple through holes are axially formed in the graphite body. Due to the arc surfaces and the through holes, on one hand, the contact area between the grounded resistance reducing module and the ground can be increased, and on the other hand, the weight and the cost of the graphite body can be reduced. The arc surfaces are coated with high-water-absorption protective films respectively, the bottom end of the graphite body is provided with a stainless conical head, one end of the electrode is inserted into the top of the graphite body, and the other end of the electrode is exposed outside the graphite body and used for being connected with a ground wire. The top of the graphite body is also provided with a stainless steel plate. By the adoption of the graphite type grounded resistance reducing module, the grounded resistance can be more effectively reduced. The stone weir principle presentation device is high in corrosion resistance and wide in application range.

Description

technical field [0001] The invention relates to a graphite-type grounding resistance reducing module, which belongs to the technical field of grounding devices. Background technique [0002] The safe, stable and reliable operation of high-voltage transmission lines plays a key role in the entire power grid, and the tripping of transmission lines during operation is mainly caused by operating voltage, operating overvoltage or atmospheric overvoltage. At present, the operating overvoltage in the ultra-high voltage transmission system has been controlled at a relatively low level; at the same time, with the improvement of the insulation level of the line, the reliability of the transmission line under the action of the working voltage has also been significantly improved. Therefore, lightning strikes become the main cause of line failures. And reducing the grounding resistance of the transmission line tower is one of the important measures to improve the lightning protection l...

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Problems solved by technology

[0006] In recent years, there are some difficult problems in the grounding of high-voltage transmission line poles and towers in practical engineering applications: one is that the grounding resistance of the grounding device cannot meet the specified requirements; the other is the stability of resistance reduction, especially in areas with high soil resistivity , although it can reduce the resistance very well during installation, the resistance reduction effect will be far reduced after a period of use, so it is not suitable for use; the third is the corrosion problem of the grounding body; the fourth is that the grounding body is easily damaged by external forces, for example, in the desert The towers in the area are grounded. When the wind blows, it is easy to blow away the sand and expose the grounding body. However, the towers in the cultivated land may sometimes damage the grounding body due to the cultivation of the farmland.

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