Anti-icing voltage-sharing plate

Abstract

The invention discloses an anti-icing voltage-sharing plate. The anti-icing voltage-sharing plate comprises a cylindrical connecting metal fitting (1) and an umbrella-like disc (2), wherein the disc (2) is fixedly sheathed on the connecting metal fitting (1). The external end face of the connecting metal fitting (1) is provided with a spherical concave body (11), and the inner end of the connecting metal fitting (1) is provided with a spherical end (12); and the disc (2) is provided with a disc body (21), the edge of the disc body (21) is an annular body (22), a drain hole (23) is distributed in the annular body (22), and a lower edge drain hole (24) is distributed on the lower bottom surface of the annular body (22). The voltage-sharing plate has the advantages that 1) the voltage-sharing plate can delay the icing time by more than 10-15 times in a heavily polluted region of a power transmission line, and enhance icing flashover voltage by 18%-25%; 2) the voltage-sharing plate can prevent filthy on the top of a tower from forming a rain curtain to cause rain flashover; 3) the formation of the rain flashover of bird droppings can be prevented; 4) the flashover voltage of lightning strokes can be enhanced; 5) and the size of a pole tower window and line corridors can be reduced, and further, the investment is saved.

Description

technical field [0001] The invention belongs to the technical field of electric power engineering, and in particular relates to an ice-coated anti-equalizing plate which delays the bridging time of ice-coated slush and improves the ice-coated power frequency flashover voltage. Background technique [0002] my country is one of the countries with the most severe icing on transmission lines in the world. Severe icing will lead to a sharp decline in the mechanical and electrical performance of transmission lines, resulting in icing accidents. According to incomplete statistics, since 1954, there have been recorded icing accidents on transmission lines, and there have been thousands of icing accidents, large or small, on transmission lines in my country. For example, in January 2008, the continuous low-temperature rainy and snowy weather in southern my country made the transmission lines seriously covered with ice, and the average thickness of the ice covered more than 30mm, wh...

AI Technical Summary

Problems solved by technology

Extending the length of the insulator string requires that the original line must be abolished and then the tower must be re-erected, and the window size of the iron tower and the corridor of the line are required to be significantly increased. The reconstruction cost is high, it is very complicated, and the operation is difficult. It cannot be fully and effectively deployed on the power grid. Therefore, it is difficult to effectively protect the operation safety of the power grid; and the intervening layout is currently only used in lines of 220kV and below. For lines above 500kV using large-tonnage insulators, due to the lack of aerodynamic insulators for flower arrangement, It is still not possible to use an interleaved arrangement to improve ice resistance

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