Application of UHF Sensors in Power System Equipment for Partial Discharge Detection: A Review
Condition monitoring of an operating apparatus is essential for lifespan assessment and maintenance planning in a power system. Electrical insulation is a critical aspect to be monitored, since it is susceptible to failure under high electrical stress. To avoid unexpected breakdowns, the level of pa...
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doaj-839851a1218e4c1bb673baad091de5a62020-11-24T22:02:33ZengMDPI AGSensors1424-82202019-02-01195102910.3390/s19051029s19051029Application of UHF Sensors in Power System Equipment for Partial Discharge Detection: A ReviewHua Chai0B.T. Phung1Steve Mitchell2School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney 2052, NSW, AustraliaSchool of Electrical Engineering and Telecommunications, University of New South Wales, Sydney 2052, NSW, AustraliaAmpcontrol Pty Ltd., Tomago NSW 2322, AustraliaCondition monitoring of an operating apparatus is essential for lifespan assessment and maintenance planning in a power system. Electrical insulation is a critical aspect to be monitored, since it is susceptible to failure under high electrical stress. To avoid unexpected breakdowns, the level of partial discharge (PD) activity should be continuously monitored because PD occurrence can accelerate the aging process of insulation in high voltage equipment and result in catastrophic failure if the associated defects are not treated at an early stage. For on-site PD detection, the ultra-high frequency (UHF) method was employed in the field and showed its effectiveness as a detection technique. The main advantage of the UHF method is its immunity to external electromagnetic interference with a high signal-to-noise ratio, which is necessary for on-site monitoring. Considering the detection process, sensors play a critical role in capturing signals from PD sources and transmitting them onto the measurement system. In this paper, UHF sensors applied in PD detection were comprehensively reviewed. In particular, for power transformers, the effects of the physical structure on UHF signals and practical applications of UHF sensors including PD localization techniques were discussed. 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.https://www.mdpi.com/1424-8220/19/5/1029partial discharge detectionUHF sensorspower system equipmentantennainsulation condition monitoring |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Hua Chai B.T. Phung Steve Mitchell |
spellingShingle |
Hua Chai B.T. Phung Steve Mitchell Application of UHF Sensors in Power System Equipment for Partial Discharge Detection: A Review Sensors partial discharge detection UHF sensors power system equipment antenna insulation condition monitoring |
author_facet |
Hua Chai B.T. Phung Steve Mitchell |
author_sort |
Hua Chai |
title |
Application of UHF Sensors in Power System Equipment for Partial Discharge Detection: A Review |
title_short |
Application of UHF Sensors in Power System Equipment for Partial Discharge Detection: A Review |
title_full |
Application of UHF Sensors in Power System Equipment for Partial Discharge Detection: A Review |
title_fullStr |
Application of UHF Sensors in Power System Equipment for Partial Discharge Detection: A Review |
title_full_unstemmed |
Application of UHF Sensors in Power System Equipment for Partial Discharge Detection: A Review |
title_sort |
application of uhf sensors in power system equipment for partial discharge detection: a review |
publisher |
MDPI AG |
series |
Sensors |
issn |
1424-8220 |
publishDate |
2019-02-01 |
description |
Condition monitoring of an operating apparatus is essential for lifespan assessment and maintenance planning in a power system. Electrical insulation is a critical aspect to be monitored, since it is susceptible to failure under high electrical stress. To avoid unexpected breakdowns, the level of partial discharge (PD) activity should be continuously monitored because PD occurrence can accelerate the aging process of insulation in high voltage equipment and result in catastrophic failure if the associated defects are not treated at an early stage. For on-site PD detection, the ultra-high frequency (UHF) method was employed in the field and showed its effectiveness as a detection technique. The main advantage of the UHF method is its immunity to external electromagnetic interference with a high signal-to-noise ratio, which is necessary for on-site monitoring. Considering the detection process, sensors play a critical role in capturing signals from PD sources and transmitting them onto the measurement system. In this paper, UHF sensors applied in PD detection were comprehensively reviewed. In particular, for power transformers, the effects of the physical structure on UHF signals and practical applications of UHF sensors including PD localization techniques were discussed. 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. |
topic |
partial discharge detection UHF sensors power system equipment antenna insulation condition monitoring |
url |
https://www.mdpi.com/1424-8220/19/5/1029 |
work_keys_str_mv |
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