Metal shielding layer spine discharge model for cable

Abstract

The invention relates to a metal shielding layer spike discharge model for a cable and relates to the field of power equipment fault models. The model comprises a cable which sequentially comprises aninsulating layer, a copper shielding layer and an outer sheath from inside to outside, and a conductive needle body is further comprised, one end of the needle body is electrically connected with aninner surface of the copper shielding layer, the other end of the needle body is inserted into the insulating layer, the model further comprises a heat shrink tube, the outer sheath is provided with an arc-shaped notch, and the copper shielding layer at the inner side of the opened arc-shaped notch is provided with a V-shaped notch, the inner surface of the copper shielding layer is adhered with an insulating tape I on the V-shaped notch, an outer surface of the copper shielding layer is adhered with an insulating tape II on a V-shaped notch, and the heat shrink tube is sleeved on the arc-shaped notch of the outer sheath. The model is advantaged in that the model can simulate the spike discharge fault of the metal shielding layer more truly and more accurately, is helpful for obtaining andanalyzing the spike discharge fault signal of the metal shielding layer in a laboratory, and has the advantages of low manufacturing cost, high simulation degree and the like.

Description

technical field [0001] The invention relates to the field of fault models of power equipment, more specifically to a spike discharge model of a metal shielding layer for cables. Background technique [0002] The power synchronous wireless transmitting and receiving device is an external communication device for power frequency power synchronous signals common in power testing equipment. The power synchronous wireless transmitting and receiving device connects the detection device and the power frequency power synchronous generator together through wireless communication, which is convenient for power frequency Power synchronous data transfer. Existing power synchronous wireless transmitting and receiving devices usually include a casing and a circuit module assembled in the casing, and the circuit module is usually rigidly fixed and installed inside the casing by a number of screws. It has a strong destructive force, which can easily lead to data error or loss, or even scra...

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