Wideband UHF Antenna for Partial Discharge Detection

Cui, Zhen; Park, Seungyong; Choo, Hosung; Jung, Kim Mi

doi:10.3390/app10051698

Cited by 13 publications

(4 citation statements)

References 17 publications

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“…The shift in resonance frequencies between simulation and measurement carried out using the vector network analyzer (VNA) is reported and investigated in the recent literature. It is confirmed that the sought cause of discrepancies between simulation and experimental results is related to fabrication and measurement errors [28], [29], [33], [34]. Fig.…”

Section: B Measuring the Antenna Parameters Using Vector Network Anal...supporting

confidence: 56%

Design and Implementation of Ultra-Wide Band Antenna for Partial Discharge Detection in High Voltage Power Equipment

et al. 2022

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Partial discharges (PD) are the most common and harmful threat to the health of electrical insulation of high voltage (HV) and high field (HF) equipment. The occurrence of PD activity in HV and MV equipment is at the same time a cause and a sign of insulation degradation that may eventually result in the breakdown of the HV power equipment. For the safe and reliable operation of HV power equipment, continuous PD monitoring needs to be conducted conveniently to prevent any unplanned power outages and damage to electrical power equipment. The ultra-high frequency (UHF) PD measurement method has been widely used as an effective technique to detect PD activity on HV power equipment due to its noninvasive principle. To enable PD detection accuracy, there is still a need for more sensitive PD sensors that can assist the UHF PD monitoring system by suppressing ambient background noise and low-frequency electromagnetic interferences from telecommunication such as GSM signals. To tackle the sensitivity issues, this article presents a new design of ultra-wideband (UWB) microstrip patch antenna that is capable of effective suppression of low-frequency interference signals. The proposed antenna, designed, simulated, and optimized using the CST Microwave Studio software, has a bandwidth of 3.3GHz, below -10dB, in the operating frequency range of 1.2GHz-4.5GHz. The prototype of this antenna, printed on an FR4 substrate of a thickness of 1.6mm and a dielectric constant of 4.4, featuring a compact size of 100mm × 100mm × 1.6mm, was implemented to detect PD through laboratory experiments. This paper shows that the designed UWB antenna has high sensitivity, good noise rejection and it is, therefore, a promising candidate sensor for PD detection on HV equipment.INDEX TERMS Partial discharge, UHF sensors, high-voltage equipment, UWB antenna.

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Section: B Measuring the Antenna Parameters Using Vector Network Anal...supporting

confidence: 56%

Design and Implementation of Ultra-Wide Band Antenna for Partial Discharge Detection in High Voltage Power Equipment

et al. 2022

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“…As can be seen, most of the antennas have low gain, which can affect antenna sensitivity in detecting electromagnetic waves emitted by PD activity. In addition, some antennas were likely not implemented for PD detection through experiments to verify their sensitivity, because only simulation results were given in their studies [7], [29]. The advantage of the antenna design presented here over the others summarized in Table 3 is that it has a wider bandwidth with higher gain range within the frequency range of interest for PD events, especially when small radiative sources (as holes and seams) are concerned.…”

Section: Fabrication and Measurement Of The Antenna Prototypementioning

confidence: 99%

Comparative Analysis of Partial Discharge Detection Features Using a UHF Antenna and Conventional HFCT Sensor

et al. 2022

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This article presents a design of ultra-high frequency (UHF), ultra-wide band (UWB) antenna used for partial discharge (PD) detection on high voltage and medium voltage power system equipment. The proposed UHF antenna has a working frequency band of 1.2GHz-4.5GHz, covering a total bandwidth of 3.3GHz with a return loss less than -10dB in the entire antenna's operating frequency. The computer simulation technology (CST) Microwave Studio software was used to design, simulate and optimize the proposed antenna. Upon simulation and optimization process, the antenna prototype was fabricated on the FR-4 substrate of 1.6 mm thickness and dielectric permittivity of 4.4. This antenna has a compact size of 100mm x100mm.The radiating patch and the ground plane of this antenna are made of annealed copper whose thickness is 0.035mm. The simulations and measurement results for the proposed antenna are in a good agreement, and the return loss of this antenna is less than -10dB with voltage standing wave ratio, VSWR, < 2 within the frequency range of interest. The proposed antenna performance in PD sensing is compared with a commercial high-frequency current transformer, HFCT. To validate the sensitivity performance of the designed antenna, experimental PD measurements were carried out by using an epoxy slab inserted between two parallel plates electrode model, in order to generate surface discharge on the insulator, and using a needleplate electrode configuration to generate corona discharge in transformer oil. Based on PD measurement results, it was shown that the designed antenna has a high sensitivity, which make it a suitable candidate for UHF partial discharge monitoring on high voltage and medium voltage power assets.INDEX TERMS Surface discharge, corona discharge, UHF antenna, HFCT, UHF PD monitoring.

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“…In ref. [11], a loop structure is investigated versus an HFCT. Both are introduced into the grounding branch.…”

Section: Introduction To Detection Of Partial Dischargesmentioning

confidence: 99%

Experimental qualification and sensitivity study of antipodal patch antenna structures for orientation independent detection of partial discharges

Friebe,

Jenau

2024

High Voltage

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Partial discharge diagnosis is an important part of monitoring and diagnosing components of the power transmission system. Four different patch antenna structures for the detection of partial discharges are investigated. These patch antennas, which are realisable in a variety of geometric structures, are already the subject of research. They offer the advantage of contactless detection without intervention in the test object or the measuring circuit, and also offer the possibility of alignment independent detection compared to directional antennas. However, it is important and required to examine different structures extensively at the same measurement setup and to compare their performance. To achieve this, four different configurations of patch antenna structures based on basic geometries all in antipodal design are realised: a logarithmic periodic structure, a Hilbert fractal structure and two tapered slot antennas. They are exposed to the same conditions on a special and unique measurement setup. As the main aspect, the performance of orientation independent detection of partial discharges patch antennas with varying distance and rotation in relation to the partial discharge source as well as the operating bandwidth is examined. To rate the structures, an evaluation scheme is created and a sensitivity matrix is generated.

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Wideband UHF Antenna for Partial Discharge Detection

Cited by 13 publications

References 17 publications

Design and Implementation of Ultra-Wide Band Antenna for Partial Discharge Detection in High Voltage Power Equipment

Design and Implementation of Ultra-Wide Band Antenna for Partial Discharge Detection in High Voltage Power Equipment

Comparative Analysis of Partial Discharge Detection Features Using a UHF Antenna and Conventional HFCT Sensor

Experimental qualification and sensitivity study of antipodal patch antenna structures for orientation independent detection of partial discharges

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