Effect of Magnetic Field on Partial Discharge Dynamics in Insulation Systems of Transportation Power Devices

Florkowski, Marek

doi:10.1109/tte.2022.3185931

Cited by 9 publications

(6 citation statements)

References 48 publications

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“…Experimental setup and instrumentation. The measurements were performed in the original setup which allowed for sensitive detection in the presence of weak magnetic field, since conventionally PD measurement are carried out only in the electric field 21 . The presented experiments were performed in the crossed magnetic and electric field setup; the experimental arrangement is presented in Fig.…”

Section: Simulation Of Charged Particle Trajectory In Crossed Electri...mentioning

confidence: 99%

“…The globally observed trend toward electrically supplied devices is common also in the transportation segment. The influence of magnetic fields on PD in insulation systems of transportation power devices is presented in 21 . The measurements revealed enhanced PD intensity in the presence of a magnetic field that can be observed in a supply voltage frequency range of 20–400 Hz (which is typical for the transportation segment).…”

Section: Introductionmentioning

confidence: 99%

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Magnetic field modulated dynamics of partial discharges in defects of high voltage insulating materials

Florkowski

2022

Sci Rep

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This paper presents original measurement methodology and detection approach to determine the influence of the magnetic field on the partial discharge (PD) dynamics. The application areas refer to insulation systems of both grid and industrial network devices and emerging segments such as high-speed rail, electric vehicles or more electric aircrafts. Conventionally PD measurements are executed only in electric field, however the interaction of magnetic and electric fields influences the dynamics of PDs. The measurement technique allowed to detect quantitatively the effect of magnetic fields on PDs in two representative arrangements: in gaseous void in dielectric material and in corona point-plane setup. Measurements in both configurations have revealed amplification of PDs intensity. The quantitative comparison of PDs evolution in the magnetic field is a novel aspect shown in this paper. Combination of phase resolved images and time-sequence intensity diagrams obtained at magnetic field switching allowed to visualize and determine quantitatively this impact. This effect is attributed to the extension of the charged particle trajectory and the amplification of the electron energy due to acceleration. Thus, the investigated impact of a magnetic field can be perceived as an additional element that influences the PD dynamics.

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Section: Simulation Of Charged Particle Trajectory In Crossed Electri...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Magnetic field modulated dynamics of partial discharges in defects of high voltage insulating materials

Florkowski

2022

Sci Rep

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“…The tendency toward higher voltage levels can be observed in both power transmission and distribution as well as in emerging segments such as ground and air transportation [1][2][3][4][5][6][7][8]. This implies an adequate design of electrical insulation systems to withstand electrical stresses, and it concerns both AC and DC cases.…”

Section: Introductionmentioning

confidence: 99%

“…Classically, only the effect of an electric field has been taken into account in PD investigations, whereas the influence of a magnetic field has been neglected. However, all current-carrying devices are also simultaneously exposed to surrounding magnetic fields; this refers to the insulation systems of power grids, substations, transportation, and industrial network devices [2,[6][7][8]. The most common types of discharges refer to either internal discharges in gaseous inclusions inside solid dielectrics, surface discharges, and discharges in insulating liquids or external corona [9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…The presented results are based on corona configuration in air, however, the applications areas are very broad, on one side related to discharges resembling point-plane configurations and on the other side are applicable to the partial discharges occurring in voids or in delaminations, where the effects of a magnetic field will be also present [33]. For example, this phenomenon is important in the power devices of the transportation segment [8], which work at low and medium voltage levels and are usually driven by power electrics converters. There is an observed continuous trend toward higher voltages in these applications.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Interplay between Parallel and Perpendicular Magnetic and Electric Fields on Partial Discharges

Florkowski

2023

Energies

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This paper reports on the influence of a magnetic field on the dynamics of partial discharges (PDs) in two distinct configurations with respect to the mutual orientation of electric fields. The broad application areas include electrical insulation systems of both high-voltage grids and industrial network devices as well as emerging segments such as electric vehicles or more electric aircraft. Traditionally, PD measurements are only carried out in an electric field. In all current-carrying power equipment, magnetic fields are also superimposed onto electric ones, thus influencing partial discharge behavior. It has been observed that the interplay between electric and magnetic fields influences the dynamics of PDs; parallel and perpendicular mutual orientations were specifically investigated. The measurement technique allowed us to quantitively detect the effect of magnetic fields on PDs in a corona point–plane arrangement. The novel element presented in this article is a detection of PD intensity modulated by a magnetic field, with both perpendicular and parallel orientations with respect to electric one, and a quantitative visualization in the form of the time-sequence diagrams. The simulation of electron trajectories in the presence of electric and magnetic fields revealed the elongation of the pathways and differentiation of the charged particle propagation times. The perpendicularly oriented magnetic field led to a twisting effect, whereas the parallel alignment reflected the propagation along a helical trajectory. A slightly stronger PD intensity amplification effect was observed in the case of a parallel alignment of electric versus magnetic fields as compared with the perpendicular orientation. The presented results may contribute to PD measurement methodology in both electric and magnetic fields as well as a better understanding of the underlying physical mechanisms. The observed effect of the modulation of the magnetically based PD dynamics may be relevant for the insulation systems of power equipment.

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Measurement of partial discharge echo and extraction of decay attributes

Florkowski

2024

Measurement

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Effect of Magnetic Field on Partial Discharge Dynamics in Insulation Systems of Transportation Power Devices

Cited by 9 publications

References 48 publications

Magnetic field modulated dynamics of partial discharges in defects of high voltage insulating materials

Magnetic field modulated dynamics of partial discharges in defects of high voltage insulating materials

Effect of Interplay between Parallel and Perpendicular Magnetic and Electric Fields on Partial Discharges

Measurement of partial discharge echo and extraction of decay attributes

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