Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Sensitivity Analysis of Intensity-Modulated Plastic Optical Fiber Sensors for Effective Ageing Detection in Rapeseed Transformer Oil

Version 1 : Received: 28 September 2023 / Approved: 29 September 2023 / Online: 3 October 2023 (03:18:58 CEST)

A peer-reviewed article of this Preprint also exists.

Elele, U.; Nekahi, A.; Arshad, A.; McAulay, K.; Fofana, I. Sensitivity Analysis of Intensity-Modulated Plastic Optical Fiber Sensors for Effective Aging Detection in Rapeseed Transformer Oil. Sensors 2023, 23, 9796. Elele, U.; Nekahi, A.; Arshad, A.; McAulay, K.; Fofana, I. Sensitivity Analysis of Intensity-Modulated Plastic Optical Fiber Sensors for Effective Aging Detection in Rapeseed Transformer Oil. Sensors 2023, 23, 9796.

Abstract

In the realm of power delivery to end-users, transformers are indispensable, with their malfunctions leading to substantial economic, safety, and environmental repercussions. The need for persistent surveillance is accentuated for in-situ oil-filled transformers, given the potential degradation of oil and the emergence of related ageing by-products. As the focus tilts towards online detection methodologies for transformer oil ageing, bypassing challenges associated with traditional offline methods such as sample contamination and misinterpretation, fiber optic sensors are gaining trac-tion due to their compact nature, cost-effectiveness, and resilience to electromagnetic disturbances typical in high-voltage environments. This work delves into the sensitivity analysis of intensi-ty-modulated plastic optical fiber sensors. The investigation encompasses key determinants such as the influence of optical source wavelengths, noise response dynamics, ramifications of varying sensing lengths, and repeatability assessments. Findings underscore that elongating the sensing length detrimentally affects both the linearity response and repeatability, largely attributed to the diminished resistance to external noise. Additionally, the choice of the optical source wavelength proved to be a critical variable in assessing sensor sensitivity.

Keywords

Ageing; Fiber Optic Sensor; Transformer Oil; Refractive Index; Evanescent Field; Intensity Modulation

Subject

Engineering, Electrical and Electronic Engineering

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