A ground grid grounding connection device and connection method for electric power equipment

Abstract

The invention provides a grounding grid grounding connection device for power equipment and a connection method. The grounding grid grounding connection device for power equipment comprises a main grounding grid and four grounding down leads, wherein the main grounding grid is arranged under the ground around a tower base and has a square structure constructed of a flexible graphite coil material,one end of each side is connected with the 3 / 5 to 3 / 4 of the side length of the adjacent side, and each of the four corners is provided with a graphite cable end connected to a tinned stainless steelsleeve; each grounding down lead is welded with the outer wall of the tinned stainless steel sleeve and the other end is connected with a tower supporting leg; and the side wall of the tinned stainless steel sleeve is provided with through holes, the graphite cable ends and the tinned stainless steel sleeve pass through the through holes through copper pins to be fixed. According to the groundinggrid grounding connection device for the power equipment and the connection method provided in the invention, the problems that the grounding down lead is likely to damage and corrode, and connectionwith the main grounding grid is poor can be solved, the operation and maintenance efficiency is reduced, and the operation and maintenance cost is saved.

Description

technical field [0001] The invention belongs to the field of grounding connection methods for grounding grids, and more specifically relates to a grounding connection device and a connection method for grounding grids of electric power equipment. Background technique [0002] The grounding device of the transmission line tower is an important part of the transmission line. It is a general term for the main grounding grid buried in the soil and the grounding down-conductor leaking above the ground surface. The two are connected in the soil by melting welding or pressure plate crimping. The function is to better guide and discharge the lightning current into the ground, so as to maintain a certain level of lightning resistance of the line, ensure that the lightning current can reliably leak into the ground, protect the insulation of line equipment, reduce the line lightning tripping rate, improve operational reliability and avoid step voltage. personal injury. [0003] Graphi...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a grounding connection device and connection method for electric equipment, which aims to solve the problems of easy damage and corrosion of the grounding down-conductor and poor connection stability with the main grounding grid, reduce the frequency of operation and maintenance, save O&M cost

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