Optical fiber composite insulator

Abstract

The invention relates to an optical fiber composite insulator, comprising a support body, wherein the support body comprises at least one through hole formed on the support body, the through hole is formed along the axial direction of the support body; and the optical fiber composite insulator also comprises at least one optical fiber penetrating through the through hole. Because the support body of the optical fiber composite insulator is provided with the through hole and the optical fiber is arranged in the through hole, a shed and a flange outside an insulating tube can be prefabricated and inserted, and then the optical fiber is fixed, thereby avoiding damaging the optical fiber when the shed is formed at high pressure and high temperature, and improving the percent of pass of the optical fiber composite insulators.

Description

technical field [0001] The invention relates to electric power equipment, in particular to an optical fiber composite insulator used in high-voltage electrical appliances in the electric power industry. Background technique [0002] The traditional high-voltage current measurement method is to use an electromagnetic transformer based on the principle of electromagnetic induction to measure the current. However, with the continuous increase of power capacity and voltage level, the traditional electromagnetic transformer presents insurmountable problems. In large-capacity, ultra-high-voltage power systems, traditional electromagnetic transformers will cause severe distortion of measurement results. However, due to the high transmission efficiency, stable performance and accurate measurement of optical fiber transmission current signal, the traditional electromagnetic current transformer is gradually replaced by the optical fiber transformer based on optical principle. In this...

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Problems solved by technology

Because the thermal expansion coefficients of the organic insulating material used for sealing potting, the insulating tube, and the optical fiber are quite different, the thermal expansion of the organic insulating material will cause stress in the hollow insulator when heated, thereby increasing the loss of the optical fiber

At the same time, when the entire hollow composite insulator body including the optical fiber passing through the hollow insulating tube is heated, the cladding layer of the optical fiber will be peeled off, so that the optical fiber is easy to break, thereby reducing the qualified rate of the insulator made

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