Sulfur hexafluoride-filled extrinsic Fabry-Pérot interferometric fiber-optic sensors for partial discharge detection in transformers

Bo Dong; Ming Han; Liqun Sun; Jiajun Wang; Yunjing Wang; Anbo Wang

doi:10.1109/LPT.2008.928533

Sulfur hexafluoride-filled extrinsic Fabry-Pérot interferometric fiber-optic sensors for partial discharge detection in transformers

Bo Dong, Ming Han, Liqun Sun, Jiajun Wang, Yunjing Wang, Anbo Wang

Research output: Contribution to journal › Article › peer-review

45 Scopus citations

Abstract

This letter presents a side-hole fiber-based extrinsic Fabry-Perot interferometric (EFPI) sensor whose cavity was filled with sulfur hexafluoride (SF₆) for in situ power transformer partial discharge detection. The Fabry-Perot cavity was formed by a polished thin diaphragm and a cleaved side-hole fiber that were thermally fused onto a fused silica ferrule. The cavity was first vacuumed and then inflated with 300-kPa SF₆ through the fiber side holes to increase its resistance to electric stress. Experimental results show that the sensor filled with SF₆ was able to withstand electric stress of at least 10 kV/mm (ac root-mean-square value) in transformer oil, three times larger than that of a traditional air-filled EFPI sensor.

Original language	English (US)
Pages (from-to)	1566-1568
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	20
Issue number	18
DOIs	https://doi.org/10.1109/LPT.2008.928533
State	Published - Sep 15 2008
Externally published	Yes

Keywords

Fabry-Pérot (FP) interferometers
Fiber-optic sensor
Partial discharges (PDs)
Side-hole fiber

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1109/LPT.2008.928533

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title = "Sulfur hexafluoride-filled extrinsic Fabry-P{\'e}rot interferometric fiber-optic sensors for partial discharge detection in transformers",

abstract = "This letter presents a side-hole fiber-based extrinsic Fabry-Perot interferometric (EFPI) sensor whose cavity was filled with sulfur hexafluoride (SF6) for in situ power transformer partial discharge detection. The Fabry-Perot cavity was formed by a polished thin diaphragm and a cleaved side-hole fiber that were thermally fused onto a fused silica ferrule. The cavity was first vacuumed and then inflated with 300-kPa SF6 through the fiber side holes to increase its resistance to electric stress. Experimental results show that the sensor filled with SF6 was able to withstand electric stress of at least 10 kV/mm (ac root-mean-square value) in transformer oil, three times larger than that of a traditional air-filled EFPI sensor.",

keywords = "Fabry-P{\'e}rot (FP) interferometers, Fiber-optic sensor, Partial discharges (PDs), Side-hole fiber",

author = "Bo Dong and Ming Han and Liqun Sun and Jiajun Wang and Yunjing Wang and Anbo Wang",

note = "Funding Information: Manuscript received January 18, 2008; revised April 25, 2008. This work was supported by Electric Power Research Institute under Contract EP-P24993/ C12094. B. Dong, M. Han, J. Wang, Y. Wang, and A. Wang are with the Center for Photonics Technology, Bradley Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061-0111 USA (e-mail: bdong@vt.edu). L. Sun is with the State Key Laboratory of Precision Measurement Technology and Instrument, Tsinghua University, Beijing 100084, China. Color versions of one or more of the figures in this letter are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/LPT.2008.928533",

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AU - Wang, Jiajun

AU - Wang, Yunjing

AU - Wang, Anbo

N1 - Funding Information: Manuscript received January 18, 2008; revised April 25, 2008. This work was supported by Electric Power Research Institute under Contract EP-P24993/ C12094. B. Dong, M. Han, J. Wang, Y. Wang, and A. Wang are with the Center for Photonics Technology, Bradley Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061-0111 USA (e-mail: bdong@vt.edu). L. Sun is with the State Key Laboratory of Precision Measurement Technology and Instrument, Tsinghua University, Beijing 100084, China. Color versions of one or more of the figures in this letter are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/LPT.2008.928533

PY - 2008/9/15

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N2 - This letter presents a side-hole fiber-based extrinsic Fabry-Perot interferometric (EFPI) sensor whose cavity was filled with sulfur hexafluoride (SF6) for in situ power transformer partial discharge detection. The Fabry-Perot cavity was formed by a polished thin diaphragm and a cleaved side-hole fiber that were thermally fused onto a fused silica ferrule. The cavity was first vacuumed and then inflated with 300-kPa SF6 through the fiber side holes to increase its resistance to electric stress. Experimental results show that the sensor filled with SF6 was able to withstand electric stress of at least 10 kV/mm (ac root-mean-square value) in transformer oil, three times larger than that of a traditional air-filled EFPI sensor.

AB - This letter presents a side-hole fiber-based extrinsic Fabry-Perot interferometric (EFPI) sensor whose cavity was filled with sulfur hexafluoride (SF6) for in situ power transformer partial discharge detection. The Fabry-Perot cavity was formed by a polished thin diaphragm and a cleaved side-hole fiber that were thermally fused onto a fused silica ferrule. The cavity was first vacuumed and then inflated with 300-kPa SF6 through the fiber side holes to increase its resistance to electric stress. Experimental results show that the sensor filled with SF6 was able to withstand electric stress of at least 10 kV/mm (ac root-mean-square value) in transformer oil, three times larger than that of a traditional air-filled EFPI sensor.

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Sulfur hexafluoride-filled extrinsic Fabry-Pérot interferometric fiber-optic sensors for partial discharge detection in transformers

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Keywords

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