Next Article in Journal
Performance Improvement of a Fiber-Reinforced Polymer Bar for a Reinforced Sea Sand and Seawater Concrete Beam in the Serviceability Limit State
Next Article in Special Issue
A Novel Antenna for Partial Discharge Measurements in GIS Based on Magnetic Field Detection
Previous Article in Journal
An Appearance-Based Tracking Algorithm for Aerial Search and Rescue Purposes
Previous Article in Special Issue
Bio-inspired Printed Monopole Antenna Applied to Partial Discharge Detection
Article Menu
Issue 3 (February-1) cover image

Export Article

Open AccessArticle
Sensors 2019, 19(3), 653; https://doi.org/10.3390/s19030653

Design and Development of a Bio-Inspired UHF Sensor for Partial Discharge Detection in Power Transformers

Department of Electrical Engineering, Universidade Federal de Campina Grande, Aprigio Veloso 882, Campina Grande 58429-900, Brazil
*
Author to whom correspondence should be addressed.
Received: 2 January 2019 / Revised: 23 January 2019 / Accepted: 31 January 2019 / Published: 5 February 2019
(This article belongs to the Special Issue UHF and RF Sensor Technology for Partial Discharge Detection)
  |  
PDF [19819 KB, uploaded 11 February 2019]
  |  

Abstract

In this paper, the design and development of a bio-inspired UHF sensor for partial discharge detection in power transformers is presented. The UHF sensor was developed for external use in dielectric windows of power transformers. For this purpose, a microstrip antenna was designed with a radiating element shape based on the leaf of the Jatropha mollissima (Pohl) Baill plant. Then, an epoxy coating and an aluminium enclosure were developed to protect the antenna against corrosion and to provide mechanical support, external noise immunity, and a lifetime compatibility with power transformers. In order to verify the electrical parameters of the developed sensor, measurements of the gain and the reflection coefficient were performed in an anechoic chamber. Lastly, the antenna sensitivity for denominated partial discharge (PD) detection was compared with the IEC 60270 standard method. For this purpose, simultaneous tests were carried out in a partial discharge generator setup, composed of an oil cell with needle-plane electrodes. The experimental tests demonstrated the effectiveness of the sensor for detecting PD signals with apparent charge values higher than 35 pC. View Full-Text
Keywords: bio-inspired; partial discharge; antenna; UHF sensor; power transformer; monitoring bio-inspired; partial discharge; antenna; UHF sensor; power transformer; monitoring
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Nobrega, L.A.M.M.; Xavier, G.V.R.; Aquino, M.V.D.; Serres, A.J.R.; Albuquerque, C.C.R.; Costa, E.G. Design and Development of a Bio-Inspired UHF Sensor for Partial Discharge Detection in Power Transformers. Sensors 2019, 19, 653.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top