High-voltage cable insulating connector with built-in VHF (very high frequency) partial discharge sensing device

Abstract

The invention discloses a high-voltage cable insulating connector with a built-in VHF (very high frequency) partial discharge sensing device, and the insulator comprises the VHF partial discharge sensing device which can be respectively integrated with a first protective sleeve and a second protective sleeve in a matched and fastened manner, wherein the VHF partial discharge sensing device comprises an insulating ring; a VHF partial discharge sensor which is disposed in the insulating ring and is integrated with the insulating ring, wherein a binding post of the VHF partial discharge sensor isexposed outside the insulating ring; a clamping position capable of fastening the insulating ring together with the binding post at a mounting connection end; and an adapter assembly mounted on the second protective housing. The connector can solve the problem that the long-distance propagation attenuation of a VHF partial discharge signal is not detected, resulting in the inability to find the internal defects of the high-voltage cable insulating connector in time; the structural arrangement is more compact, which is convenient for maintenance, repair and cost control.

Description

technical field [0001] The invention relates to the field of electrical appliances, in particular to a high-voltage cable insulating joint with a built-in VHF partial discharge sensing device. Background technique [0002] In the prior art, the partial discharge parameter is one of the important indicators of the health status of the insulation joint of the high-voltage cable. [0003] When the VHF method is used for PD detection, due to the weak VHF PD signal, the signal propagation attenuation increases significantly with the increase of distance. At the same time, the internal PD signal of the high-voltage cable insulation joint is sent from the inside to the outside space. It needs to pass through the same network shielding layer and insulating material, and the signal strength is weakened; in addition, when the high-voltage cable insulation joint is laid in the trench, it is protected by sand filling and a protective cover. It is difficult to detect tiny VHF PD signals...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a high-voltage cable insulation joint with a built-in VHF partial discharge sensing device, which can solve the problem that the long-distance transmission and attenuation of VHF partial discharge signals cannot be detected, resulting in the inability to detect high-voltage cables in time. The problem of internal defects of insulating joints; the structural arrangement is more compact, which is conducive to maintenance, repair and cost control

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