Bus terminal accessory of ethylene-propylene insulation copper pipe

Abstract

The invention relates to a bus terminal accessory of an ethylene-propylene insulation copper pipe, and belongs to the technical field of power equipment. The accessory comprises a hollow insulation pipe and semiconduction stress cones, wherein the semiconduction stress cones are arranged at one end of the insulation pipe and are in hollow truncated cone shapes, one end with a large radius of each semiconduction stress cone faces the insulation pipe, the semiconduction stress cones are wrapped by the insulation pipe, and a plurality of umbrella skirts are arranged on an outer surface of the insulation pipe. In the bus terminal accessory of the ethylene-propylene insulation copper pipe, provided by the invention, a liquid silicone rubber material is adopted, the accessory is formed by die pressing high-temperature curing, the semiconduction stress cones are overlapped with the insulation pipe to achieve an effect of uniform insulation shielding, and the radial field intensity and longitudinal field intensity of an insulation shielding opening can be perfectly uniform; the insulation layer is provided with umbrella skirts, the insulation problem of a voltage of a semiconduction outer side can be ensured very well by the insulation layer, and meanwhile, the voltage problem of the whole bus terminal is ensured; and the umbrella skirts are used for extending the creepage distance of a high potential and a low potential very well, and the subsequent process of a bus due to the creepage distance problem is saved.

Description

technical field [0001] The invention relates to an ethylene-propylene insulated copper tube busbar terminal accessory, which belongs to the technical field of electric equipment. Background technique [0002] With the development of my country's economy, the power load continues to increase, the capacity of the main transformer in the substation continues to increase, and the rated current of the 10kV incoming side busbar of the transformer is increasing. Conventional copper bars and rectangular busbars are difficult to meet technically and structurally. The requirements of bus heating and short-circuit electromotive force will cause additional loss and increase of skin effect coefficient, resulting in decrease of interception capacity and uneven current distribution. [0003] In recent years, a new type of tubular insulated busbar has gradually been recognized by the State Grid and various large enterprises, but there are still many problems in practical applications, such a...

AI Technical Summary

Problems solved by technology

Provides an ethylene-propylene insulated copper tube busbar terminal accessory that solves the voltage and electric field problems of the terminal of the insulating tubular busbar

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