Flexible Optical Fiber Online Current Test Clamp

Abstract

The invention relates to the technical field of electric power, and discloses an online current testing clamp for a flexible optical fiber. The online current testing clamp comprises a first clamp body and a second clamp body which are made of an insulation material; the first clamp body comprises a first semi-circular-ring body and a first support handle, and the first support handle is connected with the circular-arc end of the first semi-circular-ring body; the second clamp body comprises a second semi-circular-ring body and a second support handle, and the second support handle is connected with the circular-arc end of the second semi-circular-ring body; semi-circular-ring channels are formed in the first semi-circular-ring body and the second semi-circular-ring body respectively, the first semi-circular-ring body and the second semi-circular-ring body are spliced to form a circular-ring body, the semi-circular-ring channels are communicated in a butt-joint mode to form a spiral channel which is used for containing the flexible polarization maintaining optical fiber and wound around the axis of the circular-ring body, a wire passing pipe communicated with the spiral channel is arranged in the first support handle, and the first support handle and the second support handle are connected through a rotating shaft to form a rotating fulcrum. According to the online current testing clamp, online on-site measurement can be achieved, and the online loaded running working state of a high-voltage transformer can be reflected in real time.

Description

technical field [0001] The invention relates to the technical field of electric power, in particular to a flexible optical fiber online current testing clamp. Background technique [0002] Usually, the measurement of high-voltage lines is carried out with a clamp ammeter. The principle of a traditional clamp ammeter is the principle of an open current transformer, and an iron core is required in the clamp. Due to the need of the clamp-shaped opening structure, the iron core is not closed, so the magnetic resistance at the opening is large and magnetic flux leakage will occur through the gap, so the measurement accuracy of the high-voltage clamp ammeter can only reach 0.5%, which is difficult to improve to 0.2% or more. The measurement accuracy of 0.2% can be achieved by using a flexible fiber optic current sensor. Usually, the way to measure current with a fiber optic sensor is to cut off the power and then the tester will wind the fiber to the measured current line for mea...

AI Technical Summary

Problems solved by technology

[0004] The invention proposes a flexible optical fiber online current test clamp, which solves the problems in the prior art that it cannot be measured on-line and cannot actually reflect the working state of the high-voltage transformer when it is running online with load

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