Novel Planar Capacitive Interdigital Multifinger (IDCM) Sensor for the Detection of the Ageing of Electrical Transformer Oil

R. G. M. Oliveira; J. E. V.  de Morais; V. L. Bessa; M. C. S. Freitas; V. C. Martins; M. A. S. Silva; H. D. de Andrade; I. S. Queiroz Júnior; A. S. B. Sombra

doi:10.37256/fce.112020221.31-36

Authors

R. G. M. Oliveira Telecommunication and Materials Science and Engineering of Laboratory (LOCEM), Physics Department, Federal University of Cear(UFC), Campus PICI, Fortaleza, Brazil
J. E. V. de Morais Telecommunication and Materials Science and Engineering of Laboratory (LOCEM), Physics Department, Federal University of Cear(UFC), Campus PICI, Fortaleza, Brazil
V. L. Bessa Telecommunication and Materials Science and Engineering of Laboratory (LOCEM), Physics Department, Federal University of Cear(UFC), Campus PICI, Fortaleza, Brazil
M. C. S. Freitas Federal Institute of Cear, Campus Fortaleza/IFCE, Fortaleza, Brazil
V. C. Martins Telecommunication and Materials Science and Engineering of Laboratory (LOCEM), Physics Department, Federal University of Cear(UFC), Campus PICI, Fortaleza, Brazil
M. A. S. Silva Telecommunication and Materials Science and Engineering of Laboratory (LOCEM), Physics Department, Federal University of Cear(UFC), Campus PICI, Fortaleza, Brazil
H. D. de Andrade Federal University of Semiarid Region, UFERSA, Mossoro, Brazil
I. S. Queiroz Júnior Federal University of Semiarid Region, UFERSA, Mossoro, Brazil
A. S. B. Sombra Telecommunication and Materials Science and Engineering of Laboratory (LOCEM), Physics Department, Federal University of Cear(UFC), Campus PICI, Fortaleza, Brazil

DOI:

https://doi.org/10.37256/fce.112020221.31-36

Keywords:

Planar Interdigital Capacitor, Permittivity, Transformer Oil

Abstract

This work shows a planar interdigital sensor for rapid measurement of oils. The kit is characterised by the impedance meter, a Raspberry Pi3 and a sample port where the planar capacitive interdigital multifinger (IDCM) sensor is stored. For validation of this IDCM sensor, the data was compared with measurements performed by impedance spectroscopy (IS). The measurements show that the measured values of the new and used oils are very close, validating the IDCM sensor for fast oil measurements of oils in transformers and other devices.

Novel Planar Capacitive Interdigital Multifinger (IDCM) Sensor for the Detection of the Ageing of Electrical Transformer Oil

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