An outdoor UHV test expansion connection line

Abstract

A diameter expansion connecting wire for an outdoor extra-high voltage test comprises a spacer, a stress steel wire, a conductive braided wire and limit devices. The spacer is annular, first through holes and second through holes are alternately arranged on the surface of the spacer and surround the circle center of the spacer, the hole diameter of each first through hole is larger than that of each second through hole, the stress steel wire penetrates through the second through holes and contacts with the inner walls of the second through holes to stress, the conductive braided wire penetrates through the first through holes, and the limit devices are fixed on the stress steel wire and positioned on two sides of the spacer. The diameter expansion connecting wire is light in weight, simple to machine and reliable in structure, and can tolerate gale and rainstorm weather.

Description

technical field [0001] The invention relates to a diameter-expanding connecting wire, in particular to an outdoor UHV test expanding-diameter connecting wire. Background technique [0002] On the UHV GIS (Gas Insulated Combined Electrical Appliance) test platform, it is necessary to frequently change the wiring mode in order to obtain different test data. Due to the high voltage level, the requirements for the passing current and corona noise of the connecting wire are relatively high. When engineering hard wire is used, it can well meet the requirements of flow capacity and low noise level. For example, the actual 4-split JLHN58K-1600 wire used in engineering is used to match the spacer bar, but its weight is very large. Generally, a crane is needed to change the wiring. It can only be completed with the cooperation of multiple personnel, and it will take a lot of manpower and material resources to change the wiring frequently. Another measure is to use tin foil telescopi...

AI Technical Summary

Problems solved by technology

When engineering hard wire is used, it can well meet the requirements of flow capacity and low noise level. For example, the actual 4-split JLHN58K-1600 wire used in engineering is used to match the spacer bar, but its weight is very large. Generally, a crane is needed to change the wiring. It can only be completed with the cooperation of multiple personnel, and it will take a lot of manpower and material resources to change the wiring frequently

Another measure is to use tin foil telescopic bellows, which are light in weight and can be customized with different diameters to meet the requirements of corona noise. For example, the patent number is CN99225495.7, a Chinese utility model patent for a telescopic bellows. The pipe is composed of the wave wall of the upward oblique line section, the wave wall of the downward oblique line section, the circular arc crest connecting the wave wall of the upper oblique line section and the triangular wave trough formed by the wave wall of the upper oblique line section and itself, but because the force bearing area is relatively small Large, at the high altitude of the UHV level, it is easy to be damaged in heavy storms and other weather, and the reliability is low

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