Review of UHF detection of partial discharge experimentation in oil-filled power transformer: Objectives, methodologies and results

Mukhtaruddin, Azharudin; Isa, Muzamir; Noor, Mazlee Mohd; Adzman, Mohd Rafi; Ain, Mohd Fadzil

doi:10.1063/1.5054219

Cited by 3 publications

(3 citation statements)

References 32 publications

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“…Such typical ranges of emitted radiation include ionizing radiation, such as X-rays, optical radiation, acoustic emission, and radio wave emission. Based on most of these emitted ranges, diagnostic methods were developed, which enables the detection and location of the source of electrical discharges, which is a great achievement in the diagnostics of high-voltage electrical insulating devices [1][2][3][4]. These methods are constantly being improved and modified in terms of increasing their effectiveness and speed of operation.…”

Section: Introductionmentioning

confidence: 99%

Energy Distribution of Optical Radiation Emitted by Electrical Discharges in Insulating Liquids

Kozioł

2020

Energies

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This article presents the results of the analysis of energy distribution of optical radiation emitted by electrical discharges in insulating liquids, such as synthetic ester, natural ester, and mineral oil. The measurements of optical radiation were carried out on a system of needle–needle type electrodes and on a system for surface discharges, which were immersed in brand new insulating liquids. Optical radiation was recorded using optical spectrophotometry method. On the basis of the obtained results, potential possibilities of using the analysis of the energy distribution of optical radiation as an additional descriptor for the recognition of individual sources of electric discharges were indicated. The results can also be used in the design of various types of detectors, as well as high-voltage diagnostic systems and arc protection systems.

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Section: Introductionmentioning

confidence: 99%

Energy Distribution of Optical Radiation Emitted by Electrical Discharges in Insulating Liquids

Kozioł

2020

Energies

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“…Since the calibration procedure used for UHF sensor has already been proposed in comparison with the conventional IEC 60270 standards [23], the present work investigates the fluorescent fiber validation and its verification with respect to UHF sensor. The rate of rising of current involved due to PD initiated from surface discharge phenomenon is in the nanosecond range, with a frequency bandwidth in the UHF region and thus employing UHF sensors for its detection [24]. The signal output of the fluorescent fiber method is determined by the duration of luminescence involved during the discharge process.…”

Section: B High-voltage Source and Sensormentioning

confidence: 99%

Effect of Magnetic Field on Partial Discharge Initiated by Metallic Particle in Thermally Aged Natural Esters Under AC and Harmonic Voltages

et al. 2022

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This paper reports the experimental and theoretical investigations of particle levitation voltage on thermally aged ester fluid, under AC and harmonic AC voltages, in the presence of both electric and magnetic fields (130 mT and 160 mT). The results indicate a higher sensitivity to identify partial discharge (PD) initiated due to particle movement in aged ester fluids with an ultra-high frequency (UHF) sensor than the fluorescent fiber technique. The cause for the reduction in sensitivity of PD detection due to the fluorescent fiber technique with thermally aged fluid is analyzed using steady-state fluorescent measurement. The reduction in the levitation voltage noticed under high-frequency AC voltages is much more severe than its impact under the fundamental frequency of AC supply voltage. In addition, the presence of a magnetic field reduces the magnitude of levitation voltage substantially. The UHF signals generated due to particle movement-initiated discharges with aged ester fluids indicate a shift in its dominant frequency of 0.9 GHz under the absence of a magnetic field to around 0.6 GHz with the effect of a magnetic field.

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“…This applies particularly to the assessment of their insulation systems' performance. Early detection and analysis of PDs offers an early identification of faults that have developed in insulation systems [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Partial Discharges in the Air by Application of Corona Camera

Skubis

Kozioł

2021

Applied Sciences

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This paper reports the results of the analysis of measurements involving partial discharges (PD) occurring in the air using a corona camera (UV camera). The measurements were carried out in laboratory conditions and applied two electrode systems: needle–needle and needle–plate, in order to obtain various electric field distributions. The measurements of PDs, including a variety of alternatives, were carried out using a portable UV camera, taking into account the impact of the camera gain parameter and its distance from the PD sources. As a result, some important regularities and characteristics were identified that could significantly affect the ability to assess PDs by application of UV camera measurements. In addition, the results obtained can be employed for non-invasive diagnostic measurements performed on working power equipment and may be useful in further work on standardizing the result interpretation method obtained from measurements using a UV camera.

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Review of UHF detection of partial discharge experimentation in oil-filled power transformer: Objectives, methodologies and results

Cited by 3 publications

References 32 publications

Energy Distribution of Optical Radiation Emitted by Electrical Discharges in Insulating Liquids

Energy Distribution of Optical Radiation Emitted by Electrical Discharges in Insulating Liquids

Effect of Magnetic Field on Partial Discharge Initiated by Metallic Particle in Thermally Aged Natural Esters Under AC and Harmonic Voltages

Assessment of Partial Discharges in the Air by Application of Corona Camera

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