An all-fiber current transformer sagnac effect test device

Abstract

The invention relates to a Sagnac effect testing device for an all-optical current transformer, comprising a vertical support, a shaft plate, a bearing, a stop pin, a signal acquisition module and a host computer, the shaft plate is fixedly arranged on the vertical support through a bearing, and the shaft The plane of the plate is set vertically and perpendicular to the bearing. The optical module and the sensitive optical fiber ring of the all-fiber-optic current transformer to be tested are fixedly installed on the shaft plate. The shaft plate with the optical module and the sensitive fiber ring rotates freely in the plane of the shaft plate, the output of the optical module is connected to the signal acquisition module, and the signal acquisition module is connected to the host computer. The test device of the invention can accurately and conveniently measure the influence of the Sagnac effect on the performance of the all-optical current transformer, and has the advantages of small occupied area, simple structure, flexible application and the like.

Description

technical field [0001] The invention relates to the technical field of power equipment testing, in particular to a device for testing the Sagnac effect of an all-fiber current transformer. Background technique [0002] The Sagnac effect (Sagnac effect) was discovered by Sagnac in 1913. It refers to decomposing a beam of light emitted by the same light source into two beams, and letting them circulate in opposite directions in the same loop for a week. meet, and then produce interference on the screen, when there is a rotational angular velocity in the loop plane, the interference fringes on the screen will move, which is the Sagnac effect. The Sagnac effect has been widely used at present, and the fiber optic gyroscope developed by the Sagnac effect has been successfully used in aviation, aerospace and other fields. [0003] For all-fiber-optic current transformer products, when the closed loop area in the optical path is not 0, there will be Sagnac effect. When the vibrati...

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Problems solved by technology

[0006] The present invention aims at the problems of high power consumption, complicated installation, high price and large occupied area of ​​existing all-fiber current transformer Sagnac effect test equipment, and provides a full-fiber optic current transformer Sagnac effect test device, which can accurately and conveniently The influence of the Sagnac effect on the performance of the all-fiber current transformer is measured, and it has the advantages of small footprint, simple structure, flexible application, etc.

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