Design of an ultrawideband VHF/UHF antenna for partial discharge detection

Zhang, Yong; Glover, Ian

doi:10.1109/icspcc.2014.6986241

Cited by 11 publications

(15 citation statements)

References 6 publications

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“…Among the UHF sensors that can be applied for PD detection, microstrip antennas are highlighted because of some interesting practical features, such as their low cost, ease of installation and manufacture, attractive radiation patterns, and wideband. However, the microstrip antennas with classical radiating element (patch) shapes (such as, rectangles, circles, triangles, squares, and others) designed to operate in the UHF range would assume relatively large dimensions [20,21,22,23,24], limiting their practical application for PD detection in power transformers.…”

Section: Introductionmentioning

confidence: 99%

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

Nobrega

Xavier

Aquino

et al. 2019

Sensors

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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.

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Section: Introductionmentioning

confidence: 99%

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

Nobrega

Xavier

Aquino

et al. 2019

Sensors

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“…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].…”

Section: Discussionmentioning

confidence: 72%

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

Xavier

Serres

Costa

et al. 2019

Sensors

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The adaptation of dielectric windows as metamaterial superstrate over a bio-inspired Printed Monopole Antenna (PMA) was evaluated in order to improve the detection sensitivity of Ultra High Frequency (UHF) sensors designed for Partial Discharge (PD) measurement. For this purpose, rectangular and circular Split Ring Resonators (SRR) structures were designed and evaluated aiming to achieve a metamaterial superstrate that improves the characteristics of the bio-inspired PMA as the gain, bandwidth, and radiation pattern. Measurements of the PMA with metamaterial superstrate were carried out in an anechoic chamber and compared to the simulations performed. The results show that the metamaterial superstrate insertion did not impact the original operating bandwidth, covering most of the characteristic frequency range of PD activity. Moreover, this insertion resulted in a mean gain enhancement of 0.7 dBi regarding the reference PMA, resulting in an antenna with better sensitivity for PD detection (mean gain of 3.61 dBi). The PMA-metamaterial set PD detection sensitivity was evaluated through laboratory tests with a point-to-plane PD generator setup and in field with measurements from a 230 kV current transformer. The developed PMA-metamaterial set was able to detect, successfully, the activity of PD for both tests, being classified as an optimized sensor for PD detection through dielectric windows.

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“…One of the first PMA designed for PD detection was presented in [41]. The PMA had an operating range that partially covers the very high frequency (VHF) and UHF spectra, containing the 120 MHz-800 MHz band.…”

Section: Uhf Sensors Applied To Pd Monitoring In High Voltage Equipmentmentioning

confidence: 99%

Detection, Classification and Location of Sources of Partial Discharges Using the Radiometric Method: Trends, Challenges and Open Issues

et al. 2021

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In this article, we provide a comprehensive survey on the most relevant research in the area of detection, classification and location of partial discharge (PD) sources using the radiometric or ultra high frequency (UHF) method, focusing mainly on the works related to the use of antennas. To the best of the authors knowledge, this is the first review paper that focuses on the application of antennas based on UHF method in the complete diagnosis of PD. Specifically, we first present the main contributions to the development and optimization of UHF sensors for application in the detection of PD sources. Second, articles that used the UHF method to identify different types of PD in high voltage equipment are described. Finally, the main contributions regarding the location of sources of defects using the radiometric method are presented. Summary of works in the area of UHF detection sensors, PD classification and PD location, with their respective contributions, are shown. Finally, research trends, challenging and open issues are discussed. The purpose of this article is to provide important information about the complete diagnosis of PD, which could be used to guide the development of more efficient techniques in this research area.

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Design of an ultrawideband VHF/UHF antenna for partial discharge detection

Cited by 11 publications

References 6 publications

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

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

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

Detection, Classification and Location of Sources of Partial Discharges Using the Radiometric Method: Trends, Challenges and Open Issues

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