Composite material pole tower outside vertical grounding led-down method and pole tower thereof

Abstract

The invention relates to a composite material pole tower outside vertical grounding led-down method and a pole tower thereof. In the invention, the extended line of one side of a ground wire cross arm is bridged with a section of upper meal cross arm of a grounding led-down wire, the grounding led-down wire is vertically led down at the tail end of the metal cross arm, the grounding led-down wire is connected on the pole tower via the lower metal cross arm of grounding led-down wire under a lower-phase conducting wire with a certain distance, and finally the grounding led-down wire is grounded along the tower body; and if the lower part of the tower body is a steel tube, the grounding led-down wire can be directly connected on the steel tube to be grounded via the lower metal cross arm of the grounding led-down wire. The invention is favorable for compressing the width of a transmission corridor to the maximum extent, is favorable for lightning protection design, avoids the short circuit between the grounding led-down wire and the composite material, plays the insulation function of the composite material tower body, and adopts a single-side grounding led-down wire so as to save more material and be economical, and the invention has simple structure and 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,...

AI Technical Summary

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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