Diagnostic potential of free-space radiometric partial discharge measurements

Jaber, Adel; Lazaridis, Pavlos I.; Saeed, B.; Mather, Peter; Vieira, M F Q; Atkinson, Robert; Tachtatzis, Christos; Iorkyase, Ephraim; Judd, M.D.; Glover, Ian

doi:10.23919/ursigass.2017.8104969

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…In [ 20 , 40 ], spectra were taken for a further two emulated PD faults using galvanic and radiometric measurements. Both PD cells emulated defects within solid insulation.…”

Section: Techniques For Radiometric Partial Discharge Measurementmentioning

confidence: 99%

A Review of Techniques for RSS-Based Radiometric Partial Discharge Localization

Upton

Mistry²,

Mather

et al. 2021

Sensors

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The lifespan assessment and maintenance planning of high-voltage power systems requires condition monitoring of all the operational equipment in a specific area. Electrical insulation of electrical apparatuses is prone to failure due to high electrical stresses, and thus it is a critical aspect that needs to be monitored. The ageing process of the electrical insulation in high voltage equipment may accelerate due to the occurrence of partial discharge (PD) that may in turn lead to catastrophic failures if the related defects are left untreated at an initial stage. Therefore, there is a requirement to monitor the PD levels so that an unexpected breakdown of high-voltage equipment is avoided. There are several ways of detecting PD, such as acoustic detection, optical detection, chemical detection, and radiometric detection. This paper focuses on reviewing techniques based on radiometric detection of PD, and more specifically, using received signal strength (RSS) for the localization of faults. This paper explores the advantages and disadvantages of radiometric techniques and presents an overview of a radiometric PD detection technique that uses a transistor reset integrator (TRI)-based wireless sensor network (WSN).

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“…In [ 20 , 40 ], spectra were taken for a further two emulated PD faults using galvanic and radiometric measurements. Both PD cells emulated defects within solid insulation.…”

Section: Techniques For Radiometric Partial Discharge Measurementmentioning

confidence: 99%

A Review of Techniques for RSS-Based Radiometric Partial Discharge Localization

Upton

Mistry²,

Mather

et al. 2021

Sensors

View full text Add to dashboard Cite

show abstract

“…The fundamental technique involves using radio receivers to detect and measure the electromagnetic signal propagated from the 1 -1000 ns current pulse displaced during the PD event. This electromagnetic pulse signal resembles a classical decaying oscillation [9] within a bandwidth of 50 -1000 MHz, depending on the type and structure of the fault [10]- [19]. However, the frequency range is generally limited to approximately 50 -800 MHz due to the band-limiting response of the propagation environment containing various high-frequency attenuating metallic structures [20].…”

Section: Introductionmentioning

confidence: 99%

Gated Pipelined Folding ADC-Based Low Power Sensor for Large-Scale Radiometric Partial Discharge Monitoring

et al. 2020

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Partial discharge is a well-established metric for condition assessment of high-voltage plant equipment. Traditional techniques for partial discharge detection involve physical connection of sensors to the device under observation, limiting sensors to monitoring of individual apparatus, and therefore, limiting coverage. Wireless measurement provides an attractive low-cost alternative. The measurement of the radiometric signal propagated from a partial discharge source allows for multiple plant items to be observed by a single sensor, without any physical connection to the plant. Moreover, the implementation of a large-scale wireless sensor network for radiometric monitoring facilitates a simple approach to high voltage fault diagnostics. However, accurate measurement typically requires fast data conversion rates to ensure accurate measurement of faults. The use of high-speed conversion requires continuous high-power dissipation, degrading sensor efficiency and increasing cost and complexity. Thus, we propose a radiometric sensor which utilizes a gated, pipelined, sample-and-hold based folding analogue-todigital converter structure that only samples when a signal is received, reducing the power consumption and increasing the efficiency of the sensor. A proof of concept circuit has been developed using discrete components to evaluate the performance and power consumption of the system.

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Diagnostic potential of free-space radiometric partial discharge measurements

Cited by 2 publications

References 6 publications

A Review of Techniques for RSS-Based Radiometric Partial Discharge Localization

A Review of Techniques for RSS-Based Radiometric Partial Discharge Localization

Gated Pipelined Folding ADC-Based Low Power Sensor for Large-Scale Radiometric Partial Discharge Monitoring

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