Method for vertical grounding led-down outside composite material pole tower and pole tower thereof

Abstract

The invention relates to a method for vertical grounding led-down outside a composite material pole tower and a pole tower thereof. In the method, a section of grounding lead upper metal cross arm is erected on an extension line on one side of a grounding cross arm; a grounding lead is led down vertically at the tail end of the metal cross arm; the grounding lead is connected to the pole tower through a corresponding grounding lead lower metal cross arm at a distance below a bottom phase lead, and finally, the grounding lead is grounded along a tower body; and if the lower part of the tower body is a steel pipe, the grounding lead can be connected to the steel pipe directly for grounding through the grounding lead lower metal cross arm. The method is favorable for compressing the width of a power transmission passageway to the utmost extent, and simultaneously is favorable for the design of lightning protection, prevents the grounding lead from being short-circuited with the tower body of the composite material pole tower, and gives play to the insulation function of the composite material tower body; besides, a unilateral grounding lead is adopted, so the method saves more materials is more economical, the structure is simple and convenient, and the method is easy to implement.

Description

technical field [0001] The invention relates to a method for vertically directing the outer side of a composite material pole tower and the pole tower thereof, and belongs to the application field of power transmission technology in electric power systems. Background technique [0002] The tower is an important equipment of the transmission line, and the characteristics of the materials used directly affect the safety, economy and reliability of the line operation. Because steel has the advantages of high strength-to-weight ratio, easy processing and installation, most of the high-voltage grades at home and abroad currently use all-steel towers. However, the all-steel tower also has defects such as high quality (higher steel density) and easy corrosion, so it needs to invest a lot of manpower and material resources in the construction, transportation and maintenance of the tower. With the development of composite material production technology and its manufacturing process,...

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Problems solved by technology

[0006] Therefore, in areas with intensive lightning activities, the application of transmission line composite material towers has the problem of grounding (the all-steel tower is a metal conductor, and the ground wire is directly connected to the earth through the tower body, so there is no longer To consider the problem of grounding down), there are many different methods for grounding down, the method of grounding down will directly affect the lightning protection effect of the composite material tower, and also affect the transmission corridor width compression and antifouling of the line. , so the grounding method of the composite material tower is the key technology and difficulty that needs to be solved first in its application

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