Development of portable deterioration diagnosis device for oil filled transformers based on near-infrared spectroscopic information

IF 0.5 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Electronics and Communications in Japan Pub Date : 2024-05-25 DOI:10.1002/ecj.12451

Seiichirou Oshima, Ken-Ichiro Suehara, Fumiya Fushimi, Hisahide Nakamura, Atsushi Hashimoto

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Abstract

A transformer plays a key role in electric power distribution system; therefore, when the transformer fails, several electrical components may get affected. As a result, diagnosing the deterioration of transformers is important for the management of electric power distribution system. The furfural content in the insulating oil of a transformer is widely used as an indicator of deterioration because furfural is generated by the decomposition of insulating paper. However, analyzing the furfural content is time consuming because of the requirement of a professional and the complexity of the diagnosis process. In this study, we propose a novel method for analyzing the amount of furfural in the insulating oil based on near-infrared spectroscopic data obtained using the developed portable spectrometer, which can be used for the on-site analysis at transformer installation sites. We selected wavenumbers with high correlation coefficients between the furfural content of oil and the spectroscopic data and estimated the furfural content by partial least squares regression. The results suggest that the furfural content can be analyzed in a few minutes using a small amount of oil through a portable diagnostic device.

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开发基于近红外光谱信息的便携式充油变压器劣化诊断装置

变压器在配电系统中起着关键作用；因此，一旦变压器发生故障，多个电气组件都可能受到影响。因此，诊断变压器的劣化对配电系统的管理非常重要。变压器绝缘油中的糠醛含量被广泛用作变质的指标，因为糠醛是由绝缘纸分解产生的。然而，分析糠醛含量需要专业人员，而且诊断过程十分复杂，因此非常耗时。在本研究中，我们提出了一种基于近红外光谱数据分析绝缘油中糠醛含量的新方法，该数据是利用开发的便携式光谱仪获得的，可用于变压器安装现场的现场分析。我们选择了油中糠醛含量与光谱数据之间相关系数较高的波段，并通过偏最小二乘法回归估算了糠醛含量。结果表明，使用便携式诊断设备，只需少量油，几分钟内就能分析出糠醛含量。

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来源期刊

Electronics and Communications in Japan 工程技术-工程：电子与电气

CiteScore

0.60

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Electronics and Communications in Japan (ECJ) publishes papers translated from the Transactions of the Institute of Electrical Engineers of Japan 12 times per year as an official journal of the Institute of Electrical Engineers of Japan (IEEJ). ECJ aims to provide world-class researches in highly diverse and sophisticated areas of Electrical and Electronic Engineering as well as in related disciplines with emphasis on electronic circuits, controls and communications. ECJ focuses on the following fields: - Electronic theory and circuits, - Control theory, - Communications, - Cryptography, - Biomedical fields, - Surveillance, - Robotics, - Sensors and actuators, - Micromachines, - Image analysis and signal analysis, - New materials. For works related to the science, technology, and applications of electric power, please refer to the sister journal Electrical Engineering in Japan (EEJ).

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