Proceedings ArticleDOI
Development of UHF Sensors for Partial Discharge Detection in Power Transformer
Hua Chai,B.T. Phung,Daming Zhang +2 more
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TLDR
The results show that the new UHF antenna is suitable for PD detection in oil-insulated transformer and its ultra-wide bandwidth frequency response can be a useful means for PD recognition.Abstract:
Partial discharge (PD) is a symptom of insulation defect or degradation in high-voltage power equipment. To detect the occurrence of PDs inside oil-filled power transformers, the ultra-high frequency (UHF) detection method is one that can be applied. To date, the sensors, as the most important part in the UHF method, have not been adequately addressed in terms of sensitivity and accuracy. This paper presents a novel UHF sensor called microstrip-fed planar elliptical monopole antenna. This antenna has a simple structure and ultra-wide frequency band. It is designed and simulated using CST software for parametric optimization. Following fabrication, its performance verification is carried out using an experimental test setup for PD source. In addition, comparison is made between various UHF antennas regarding their advantage and limitation. The results show that the new UHF antenna is suitable for PD detection in oil-insulated transformer and its ultra-wide bandwidth frequency response can be a useful means for PD recognition.read more
Citations
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Journal ArticleDOI
Application of UHF Sensors in Power System Equipment for Partial Discharge Detection: A Review
TL;DR: The aim of this review was to present state-of-the-art UHF sensors in PD detection and facilitate future improvements in the UHF method.
Journal ArticleDOI
Bio-inspired Printed Monopole Antenna Applied to Partial Discharge Detection
Josiel do Nascimento Cruz,Alexandre Jean Rene Serres,A. Oliveira,George Victor Rocha Xavier,Camila Caroline Rodrigues de Albuquerque,Edson Guedes da Costa,Raimundo C. S. Freire +6 more
TL;DR: 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.
Journal ArticleDOI
Design and Application of a Metamaterial Superstrate on a Bio-Inspired Antenna for Partial Discharge Detection through Dielectric Windows.
George Victor Rocha Xavier,Alexandre Jean Rene Serres,Edson Guedes da Costa,A. Oliveira,Luiz Augusto Medeiros Martins Nobrega,Vladimir Cesarino de Souza +5 more
TL;DR: The developed PMA-metamaterial set PD detection sensitivity was able to detect, successfully, the activity of PD for both tests, being classified as an optimized sensor for PD detection through dielectric windows.
Journal ArticleDOI
Design and Implementation of Ultra-Wide Band Antenna for Partial Discharge Detection in High Voltage Power Equipment
TL;DR: In this paper , a microstrip patch antenna that is capable of effective suppression of low-frequency interference signals has been proposed to detect partial discharges in high voltage and high field (HF) power equipment.
Journal ArticleDOI
Oil-Immersed Power Transformer Condition Monitoring Methodologies: A Review
TL;DR: In this paper , the authors provide a state-of-the-art review for the various condition monitoring technologies used for oil-immersed power transformers and present a concept of measurements and analysis of the results along with the future trend of condition monitoring techniques.
References
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Antenna Theory: Analysis and Design
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Journal ArticleDOI
Wide-band planar monopole antennas
TL;DR: In this article, a simple formula is proposed to predict the frequency corresponding to the lower edge of the bandwidth for each of these configurations, including square, rectangular, and hexagonal disc monopole antennas.
Journal ArticleDOI
Planar elliptical antenna for ultra-wideband communications
C.-Y. Huang,W.-C. Hsia +1 more
TL;DR: In this paper, a printed planar elliptic patch juxtaposed with the ground pattern in a single substrate providing an ultra-wideband impedance bandwidth is presented, which is achieved by using a new impedance-matching technique of cutting a notch at a ground pattern opposite the microstrip line.
Journal ArticleDOI
U-shaped microstrip patch antenna with novel parasitic tuning stubs for ultra wideband applications
Mohsen Koohestani,Mohsen Golpour +1 more
TL;DR: In this paper, a U-shaped square patch combined with two parasitic tuning stubs is fed by a coplanar waveguide (CPW), which achieves an ultra wideband impedance bandwidth (S.............. 11 <; -10 dB) as high as 129%.
Journal ArticleDOI
Hilbert fractal antenna for UHF detection of partial discharges in transformers
TL;DR: In this paper, a compact multi-band UHF Hilbert fractal antenna with wide frequency band and suitable size for easy installation was proposed for partial discharge (PD) detection in a transformer.