Practical hybrid fiber optic current sensor on a high-voltage power line

Zhe Zheng; Zhan Chen; Feng Liu; Xin Lu; Yanhui Guo; Shengxuan Zheng

doi:10.1117/12.401706

3 October 2000 Practical hybrid fiber optic current sensor on a high-voltage power line

Zhe Zheng, Zhan Chen, Feng Liu, Xin Lu, Yanhui Guo, Shengxuan Zheng

Proceedings Volume 4220, Advanced Photonic Sensors: Technology and Applications; (2000) https://doi.org/10.1117/12.401706
Event: Optics and Optoelectronic Inspection and Control: Techniques, Applications, and Instruments, 2000, Beijing, China

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.

Citation Download Citation

Zhe Zheng, Zhan Chen, Feng Liu, Xin Lu, Yanhui Guo, and Shengxuan Zheng "Practical hybrid fiber optic current sensor on a high-voltage power line", Proc. SPIE 4220, Advanced Photonic Sensors: Technology and Applications, (3 October 2000); https://doi.org/10.1117/12.401706

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