Umbrella-shaped ice blocking device preventing conductor beneath interphase short circuit caused by de-icing of conductor above and mounting method thereof

Abstract

The invention relates to an umbrella-shaped ice blocking device preventing conductor beneath interphase short circuit caused by de-icing of a conductor above and a mounting method thereof. The umbrella-shaped ice blocking device is composed of a mandrel, an umbrella skirt, a lap joint piece, a plastic rivet and an open heat-shrinkable sleeve. According to the device, the length of an ice layer which is possibly formed by the conductor above a line corridor or in a substation can be effectively limited; and conductor beneath interphase short circuit caused by insufficient conductor beneath interphase insulation distance or long icicles which are formed by the molten ice layer, fall and are in direct lap joint with the conductor beneath interphase is prevented.

Description

technical field [0001] The invention relates to the field of ice-covered insulation of power systems, in particular to an umbrella-shaped ice-blocking device and an installation method thereof for preventing phase-to-phase short-circuit of a lower conductor caused by deicing of an upper conductor. Background technique [0002] In recent years, various power grid companies and power generation companies have repeatedly experienced phase-to-phase short-circuit faults in the lower conductors caused by the deicing of the upper conductors, especially in areas that are heavily polluted and prone to ice in winter. Finally, the lines or busbars that fall below are intersecting. Since the ice layer is often not pure, but dirty and has a high conductivity, it may directly overlap the lines or busbars below after falling, or cause the Insufficient insulation distance between phases of lines or busbars often causes short circuit between phases of lower lines or busbars, or even three-ph...

AI Technical Summary

Problems solved by technology

However, there are several deficiencies in this solution: 1) Since there is a gap in the shed after the heat-shrinkable single-hole shed is cut along the axial direction, the icing on the upper conductor may still pass through the gap and connect to a longer ice layer; 2) the single The fixing scheme of heat-shrinkable installation is not reliable, and the heat-shrinkable single-hole umbrella skirt itself may fall off; 3) The scheme does not specify what range the length of the ice layer should be limited, that is, the adjacent heat-shrinkable single-hole umbrellas What should be the distance between the skirts

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