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

Electrical & Computer Engineering

Research output: Contribution to journal › Article

29 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

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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Dong, B., Han, M., Sun, L., Wang, J., Wang, Y., & Wang, A. (2008). Sulfur hexafluoride-filled extrinsic Fabry-Pérot interferometric fiber-optic sensors for partial discharge detection in transformers. IEEE Photonics Technology Letters, 20(18), 1566-1568. https://doi.org/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.",

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AU - Dong, Bo

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AU - Wang, Anbo

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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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