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Proceedings Paper

220-kV combined optical voltage and current transformer
Author(s): Sunan Luo; Miaoyuan Ye; Yong Zhu; Ying Cui; Yan Xu; Kaicheng Li; Chaolong Ou; Zhiping Chen
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Paper Abstract

This paper presents a new optical transformer which can measure high voltage and large current simultaneously. The measurement of voltage is based on the Pockels effect. A novel structure is posed to realize an optical voltage sensor which has better stability. The measured high voltage is directly applied on the optical voltage sensor without using any capacitive voltage divider. The measurement of current is based on the Faraday effect. A bulk glass closed- loop structure for optical current sensor is used. The optical voltage sensor is in the middle of the HV polymeric insulator which is full of SF6 gas, and the otpical current as immunity of electromagnetic interference, no saturation, no oil inside, wide band range, excellent transient characteristics and light weight etc. The principles, structures and testing results of the combined optical voltage and current transformer are described in this article.

Paper Details

Date Published: 11 November 1999
PDF: 6 pages
Proc. SPIE 3897, Advanced Photonic Sensors and Applications, (11 November 1999); doi: 10.1117/12.369375
Show Author Affiliations
Sunan Luo, Huazhong Univ. of Science and Technology (China)
Miaoyuan Ye, Huazhong Univ. of Science and Technology (China)
Yong Zhu, Huazhong Univ. of Science and Technology (China)
Ying Cui, Huazhong Univ. of Science and Technology (China)
Yan Xu, Huazhong Univ. of Science and Technology (China)
Kaicheng Li, Huazhong Univ. of Science and Technology (China)
Chaolong Ou, Huazhong Univ. of Science and Technology (China)
Zhiping Chen, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 3897:
Advanced Photonic Sensors and Applications
Robert A. Lieberman; Anand Krishna Asundi; Hiroshi Asanuma, Editor(s)

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