Infrared Taper-in-Taper optical fiber sensor for moisture detection in transformer oil

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-04-04 DOI:10.1016/j.optlastec.2025.112920

Yongkun Zhao , Jihong Zhu , Hao Wang , Lei Zhang , Ruichun Wang , Yami Ling , Haizheng Tao , Yinsheng Xu

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引用次数: 0

Abstract

Moisture detection in transformer oil is vital for maintaining the operational efficiency and safety of power transformers. Optical fiber sensors are valued for their fast response, immunity to electromagnetic interference, and online monitoring capabilities in moisture detection in oil. However, challenges such as a high limit of detection (LOD), complex fabrication, and sensitivity to temperature variations persist. This study introduces a taper-in-taper with four-tapered (TIT4T) sensor for measuring moisture in transformer oil. The sensor is based on Ge₁₀As₃₀Se₄₅Te₁₅/Ge₁₀As₃₀Se₄₇Te₁₃ infrared optical fiber. The results show that the sensitivity of the TIT4T sensor for detecting moisture content in oil is 0.21572 a.u./ppm, which is 6.3 times higher than that of the tapered sensor (0.03436 a.u./ppm). Additionally, the sensor achieves an LOD of 0.6 ppm, which is lower than the minimum value required by industry standards for moisture content in transformer oil. The sensor’s performance remains stable across varying temperatures (20–80 °C) and moisture content levels (14.5–91.5 ppm). This advanced sensing technology provides a highly sensitive, accurate, and robust solution for monitoring transformer oil conditions, contributing to the reliability and safety of power systems.

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems