Aerial insulated cable used for 110kV overhead transmission line

Abstract

The invention provides an aerial insulated cable used for a 110kV overhead transmission line. The aerial insulated cable includes a conductor wire core, an inner shielding layer, an inner insulation layer and an outer insulation layer in sequence from inside out. The conductor wire core adopts a compact aluminum-magnesium-silicon alloy conductor having good conducting performance and mechanical performance, so that the aerial insulated cable has good conducting performance and high in load bearing capability. The inner shielding layer adopts 110kV inner shielding material, so that electric field distribution in the inner shielding layer is uniform. The inner insulation layer adopts 110kV crosslinked polyethylene ultra-clean cable material and has good insulation performance, and realizes an effect of major insulation. The outer insulation layer adopts weather-fastness cross linked polyethylene insulation material, so that good weather fastness is achieved besides good insulation performance. The outer insulation layer mainly realizes an effect of protecting the inner shielding layer from influence by environment ageing.

Description

technical field [0001] The invention relates to an overhead insulated cable for a 110kV overhead transmission line. Background technique [0002] Overhead distribution network is an important part of urban and rural power grids. With the development of social economy, the electricity consumption of the whole society is increasing rapidly. The 110kV overhead insulated cables with a large amount of load are overloaded and the power supply capacity is insufficient. In addition, overhead insulated cables work under sunlight for a long time, and many transmission lines need to pass through forests or large forest areas, which easily damages the insulation layer of cables, and has poor weather resistance, insulation, and shielding performance, making it difficult to achieve normal service life. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the object of the present invention is to provide an overhead insulated cable for 110kV overhead transmissi...

AI Technical Summary

Problems solved by technology

In addition, overhead insulated cables work under sunlight for a long time, and many transmission lines need to pass through forests or large forest areas, which easily damages the insulation layer of cables, and has poor weather resistance, insulation, and shielding performance, and it is difficult to achieve normal service life.

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