Insulation structure of a high-current DC transmission line

Abstract

The invention discloses a high-current direct current power transmission line insulating structure. The insulating structure comprises an upper part supporting piece, a lower part supporting piece, an insulating thin film, a bolt kit, epoxy resin insulating gasket upper layers, epoxy resin insulating gasket lower layers, a PVC sleeve and a bottom supporting steel plate, wherein clamping grooves used in a matched manner are formed in the bottom of the upper part supporting piece and the top of the lower part supporting piece respectively; an insulating thin film layer is arranged on the inner wall in each clamping groove; a power transmission line passes through the clamping grooves to be fixed; bolt holes are formed in the upper part supporting piece and the lower part supporting piece respectively; the PVC sleeve passes through the bolt holes; the bolt kit passes through the PVC sleeve to fix the upper part supporting piece and the lower part supporting piece; and therefore, the operation reliability of the power transmission line is improved, the maintenance workload is reduced, the maintenance cost is greatly lowered, and high economic benefit is achieved.

Description

technical field [0001] The invention relates to the field of insulation of direct current transmission lines, in particular to an insulation structure of large current direct current transmission lines. Background technique [0002] DC high-current transmission lines are widely used in industrial fields such as electrolysis, electroplating, and electric furnaces, and in scientific research fields such as simulating nuclear heat release and simulating nuclear fusion. With the rapid development of industry and scientific research, the current level of DC transmission lines continues to rise , has reached the current level of tens of thousands or even hundreds of thousands of amperes. With the increase of the DC transmission current level, the insulation life of the existing transmission line insulation structure has become increasingly prominent: with the increase of the current level, the supporting point caused by the electromagnetic force of the transmission line Torque inc...

AI Technical Summary

Problems solved by technology

[0005] The invention provides an insulation structure of a large-current DC transmission line, which solves the problem that the vibration caused by electromagnetic force increases after the DC current level is increased, and the insulation performance of the insulation structure of the support point of the transmission line is easily reduced or invalidated, and it is fully guaranteed. The insulation performance of the DC transmission line insulation structure is not affected under the harsh environment of DC high current, which provides a guarantee for the reliable operation of the DC transmission line

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