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Proceedings Paper

Practical hybrid fiber optic current sensor on a high-voltage power line
Author(s): Zhe Zheng; Zhan Chen; Feng Liu; Xin Lu; Yanhui Guo; Shengxuan Zheng
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Paper Abstract

In this paper, the disadvantages of the traditional Current Transformer (CT) on high voltage power line are described. A new method to measure the high-voltage current is studied. A Practical Hybrid Fiber Optic Sensor for High-Voltage Current is developed and the result of the experiment and the errors are analyzed. This design consists of two parts. One is in the air attached with the high voltage power line and the other one is on the ground. In the upper part, a Rogowaski Loop is used to transform the current signal into voltage one, then a V/F converter is applied to change this voltage signal into frequency. After processed, the resulted frequency signal is fed to the LED, which turns the electrical signal into light one. Then, the light signal is lead along the optic fiber down to the ground. Here, the optic fiber is used for insulation purpose. On the ground the light signal is converted back into electrical signal with a photoelectric cell. After amplified and regulated, the electrical signal is fed to a F/V converter, which changes the frequency signal back into the original current signal.

Paper Details

Date Published: 3 October 2000
PDF: 5 pages
Proc. SPIE 4220, Advanced Photonic Sensors: Technology and Applications, (3 October 2000); doi: 10.1117/12.401706
Show Author Affiliations
Zhe Zheng, Yanshan Univ. (China)
Zhan Chen, Yanshan Univ. (China)
Feng Liu, Yanshan Univ. (China)
Xin Lu, Yanshan Univ. (China)
Yanhui Guo, Yanshan Univ. (China)
Shengxuan Zheng, Yanshan Univ. (China)

Published in SPIE Proceedings Vol. 4220:
Advanced Photonic Sensors: Technology and Applications
Jinfa Tang; Chao-Nan Xu; Haizhang Li, Editor(s)

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