Sensitivity Check of Internal Sensor for Power Transformer Partial Discharge Measurements

Agoris, P.D.; Meijer, S.; Smit, J.J.; Lopez-Roldan, J.

doi:10.1109/icpadm.2006.284159

Cited by 9 publications

(6 citation statements)

References 3 publications

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“…RF monitoring has been proven as an effective tool in diagnosing faults, and significant ongoing research is being carried out to refine the associated techniques [12][13][14]. The current state of the art in RF monitoring equipment consists of a wide-band UHF signal capture and conditioning unit, coupled with a PC to perform analysis and provide a data visualization through a user interface.…”

Section: Rf Pd Monitoringmentioning

confidence: 99%

A frequency-based RF partial discharge detector for low-power wireless sensing

Baker

Judd

McArthur

2010

IEEE Trans. Dielect. Electr. Insul.

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Partial discharge (PD) monitoring has been the subject of significant research in recent years, which has given rise to a range of well-established PD detection and measurement techniques, such as acoustic and RF, on which condition monitoring systems for highvoltage equipment have been based. This paper presents a novel approach to partial discharge monitoring by using a low-cost, low-power RF detector. The detector employs a frequency-based technique that can distinguish between multiple partial discharge events and other impulsive noise sources within a substation, tracking defect severity over time and providing information pertaining to plant health. The detector is designed to operate as part of a wireless condition monitoring network, removing the need for additional wiring to be installed into substations whilst still gaining the benefits of the RF technique. This novel approach to PD detection not only provides a low-cost solution to on-line partial discharge monitoring, but also presents a means to deploy wide-scale RF monitoring without the associated costs of wide-band monitoring systems.

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Section: Rf Pd Monitoringmentioning

confidence: 99%

A frequency-based RF partial discharge detector for low-power wireless sensing

Baker

Judd

McArthur

2010

IEEE Trans. Dielect. Electr. Insul.

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“…In 2006, the insertion of a UHF spiral type sensor via an oil valve in a 220 kV and 63 MVA transformer was verified in [33]. The authors justified in their work that the use of dielectric windows may not be feasible in cases of older transformers that do not have adaptive inspection windows in their tank.…”

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

confidence: 99%

“…For the validation of the studies, a disk sensor in a dielectric window was used. The spiral sensor developed in [33] was successful in detecting the pulses of discharges generated in the transformer tank, presenting greater signal intensity mainly for frequencies close to 500 MHz. The results obtained by the authors demonstrated the flexibility in the way of PD detection in transformers, which can also be performed efficiently via the equipment's oil valve.…”

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

confidence: 99%

“…The insertion of UHF sensors via the oil valve in transformers was evaluated again in [35]. Unlike [33], quarter wavelength monopole antennas were analyzed. Several antenna were investigated, namely, straight wire, conical, zig-zag, helical, spiral, monopole disk, flat-plate and trapezoidal types.…”

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

confidence: 99%

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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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“…a)The UHF external sensor: (Left) front and back side of the sensor alone, and (Right) mounted on a dielectric window on the tank of the transformer[7] and b) Example of a 3-Phase Amplitude Relation Diagram (3PARD)…”

mentioning

confidence: 99%

Measurement techniques for transformer diagnostic

Schwarz

Muhr

2008

2008 International Symposium on Electrical Insulating Materials (ISEIM 2008)

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Power transformers are one of the most important and also expensive components of the electrical power supply. In electrical networks, power transformers are of essential importance as interface between different system voltage levels. Due to the long manufacture process they are one of the most critical and high-priced equipment and so this is one of the reasons why condition monitoring becomes more popular. Monitoring systems as a basis for diagnostics open possibilities for expanding the operation time, reducing the risk of expensive failures and allow several maintenance strategies. With different monitoring techniques, detailed information about the transformer condition can be received and this helps to minimize the probability of an unexpected outage. This paper gives an overview about different monitoring and diagnostic methods and techniques, especially some example in the area of partial discharge (PD) and the frequency response analysis measurement.

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Sensitivity Check of Internal Sensor for Power Transformer Partial Discharge Measurements

Cited by 9 publications

References 3 publications

A frequency-based RF partial discharge detector for low-power wireless sensing

A frequency-based RF partial discharge detector for low-power wireless sensing

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

Measurement techniques for transformer diagnostic

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