Conductive cone, cable terminal and cable intermediate joint

Abstract

The invention relates to the technical field of power cable accessories, in particular to a conductive cone, a cable terminal and a cable intermediate joint. The conductive cone comprises a first transparent insulator arranged inside and a transparent conductive layer covering the outside, and the transparent conductive layer completely covers the first transparent insulator. The cable terminal comprises the conductive cone, and the conductive cone is arranged at the joint of the insulating layer of the cable and the semi-conductive insulating shielding layer of the cable in a sleeving manner.The cable intermediate joint comprises a pair of conductive cones, the pair of conductive cones are oppositely arranged, the conductive cones are arranged at the joint of the insulating layer of thecable and the semi-conductive insulating shielding layer of the cable in a sleeving mode, and a pair of cable conductors located in the center of the cable joint are fixed through a connecting structure. The invention provides the conductive cone, the cable terminal and the cable intermediate joint which are wide in application range and high in partial discharge monitoring sensitivity.

Description

Technical field [0001] The invention relates to the technical field of power cable accessories, in particular to a conductive cone, a cable terminal and a cable intermediate joint. Background technique [0002] The interface between the stress cone of the cable accessory and the cable insulation is the weakest link in the cable accessory. When the interface has defects or the interface pressure is insufficient, partial discharge may occur here under the action of the electric field. In order to perform optical measurement of the partial discharge phenomenon, at least one optical path that allows the partial discharge optical signal to penetrate the stress cone and propagate outward needs to be provided inside the cable accessory. At present, there is a method of using transparent insulating silicon rubber material to achieve partial discharge measurement inside the stress cone, but its conductive cone is made of black opaque material, so the partial light discharge line can only ...

AI Technical Summary

Problems solved by technology

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the shortcomings of the conductive cone in the prior art that the optical propagation path is long, the scope of application is limited, and the sensitivity is low, thereby providing a short optical propagation path, wide application range, local Conductive cones, cable terminations and cable intermediate joints with high discharge monitoring sensitivity

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