Inclined-angle type double-fiber arc light detection probe

Abstract

The invention relates to an inclined-angle type double-fiber arc light detection probe, and the probe comprises a pre-posed casing pipe, a film, a transmitting optical fiber, a receiving optical fiber, an optical fiber fixing support, a post-posed casing pipe, a light source, and a light signal detector. An optical signal emitted by the light source is transmitted to the film through the transmitting optical fiber, is reflected by the film to receiving optical fiber, and then is detected by the light signal detector. The film can induce a sound signal generated by an electric arc to generate corresponding vibration, thereby changing the intensity of the light signal, emitted by the light source, received by the light signal detector. At least one of the pre-posed casing pipe, the optical fiber fixing support and the post-posed casing pipe is made of materials doped with a fluorescent material. The fluorescent material can enable arc light generated by the electric arc to be converted into a fluorescent signal corresponding to the electric arc, thereby changing the intensity of the fluorescent signal received by the light signal detector. The probe employs an inclined-angle double-fiber structure, can detect the sound signal and light signal of an arc light flicker event, is high in system sensitivity, and can achieve a self-inspection function.

Description

technical field [0001] The invention relates to a detection device, in particular to an angle-type double-fiber arc detection probe for simultaneous detection of arc sound and arc light in a power system. Background technique [0002] In today's society, the power system is constantly developing. Common faults in the power system include: overvoltage, overcurrent, short circuit and arc, among which arc is the most harmful to equipment and personal safety. [0003] The existing arc light detection probes are mainly based on fiber optic sensors. The foreign manufacturers include ABB, Littelfuse, Schneider, VAMP and General Electric, and the domestic manufacturers are mainly Nanjing Wushi Jin Sensing Technology Co., Ltd. Most of the products of these companies use the light signal to detect the arc flicker, but ignore the accompanying sound signal when the arc flicker event occurs. Acousto-optic detection is only used in the arc light sensor designed by General Electric Compan...

AI Technical Summary

Problems solved by technology

The acousto-optic detection is only used in the arc light sensor designed by General Electric Company, but the system adopts the structure of double optical fibers placed side by side in parallel

According to the relevant literature of optical fiber sensors, this side-by-side parallel dual-fiber structure will limit the improvement of its sensitivity.

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