Bio-inspired Printed Monopole Antenna Applied to Partial Discharge Detection

Abstract

A new, bio-inspired printed monopole antenna (PMA) model is applied to monitor partial discharge (PD) activity in high voltage insulating systems. An optimized sensor was obtained by designing a PMA in accordance with the characteristics of the electromagnetic signal produced by PD. An ultra-wideband (UWB) antenna was obtained by applying the truncated ground plane technique. The patch geometry was bio-inspired by that of the Inga Marginata leaf, resulting in a significant reduction in size. To verify the operating frequency and gain of the PMA, measurements were carried out in an anechoic chamber. The results show that the antenna operating bandwidth covers most of the frequency range of PD occurrence. Moreover, the antenna presented a good sensitivity (mean gain of 3.63 dBi). The antenna performance was evaluated through comparative results with the standard IEC 60270 method. For this purpose, simultaneous tests were carried out in a PD generator arrangement, composed by an oil cell with point-to-plane electrode configurations. The developed PMA can be classified as an optimized sensor for PD detection and suitable for substation application, since it is able to measure PD radiated signals with half the voltage levels obtained from the IEC method and is immune to corona discharges.

Design and Application of a Metamaterial Superstrate on a Bio-Inspired Antenna for Partial Discharge Detection through Dielectric Windows

“…Although there are more competitive antenna types that can provide higher gain than PMA, such as hornet and Vivaldi antennas, their use in PD detection is compromised due to their constructive aspects (mainly their length), since they are not suitable for installation in dielectric windows in power transformers or GIS. Despite the fact that PMA are not as efficient as another types of antennas, they still represent a good option for PD detection, since its large bandwidth, gain, radiation pattern and dimensions are still suitable for PD detection, as verified and shown on other studies in the literature [25,26,27,61,62,63,64,65,66].…”

“…These optimized geometries can be addressed in the shapes of living beings developed in order to provide greater efficiency regarding the ability to survive. Hence, aiming to achieve a better radiating efficiency, bio-inspired antennas use the shapes of plants or animals as basis for their design [21,22,23,24,25,26].…”

Intelligent PD Classification via SOM with Optimized Correlation

“…To single out the better, a good map sizing will determine the winner and 280 neurons selected for this method for U Matrix mapping. [17,6] 0.003 0.023 0 120 [17,7] 0.002 0.011 1 140 [20,7] 0.001 0.034 0 160 [20,8] 0.000 0.000 2…”

“…understanding the applications of classification [15]- [17]. Few claimed that the reliability and economic prerequisites can be made by consideration in arranging for the future establishment.…”

Study of the Influence of Winding and Sensor Design on Ultra-High Frequency Partial Discharge Signals in Power Transformers

“…However, another factor is the design of the UHF sensor itself. Several UHF sensor designs with various strengths have been developed for use in transformers and gas-insulated switchgear (GIS) [ 11 , 12 , 13 , 14 ]. In this contribution, two popular sensor designs, which are commercially available, are studied.…”