Affiliation:
1. Department of Electrical and Power Engineering, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland
Abstract
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.
Subject
Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous),Building and Construction
Reference41 articles.
1. Power Conversion Technologies for Automotive and Aircraft Systems;Rajashekara;IEEE Electrif. Mag.,2014
2. Components of Electrical Power Systems in More and All-Electric Aircraft: A Review;Barzkar;IEEE Trans. Transp. Electrif.,2022
3. Rumi, A., Marinelli, J.G., Seri, P., Kohler, M., and Cavallini, A. (2021). Performance of corona resistant insulation for aerospace. Electr. Insul. Conf. (EIC), 22–25.
4. Partial discharges in twisted-pair magnet wires subject to multilevel PWM pulses;Florkowski;IEEE Trans. Dielectr. Electr. Insul.,2017
5. Altitude Readiness of High-Voltage IGBTs Subjected to the Partial Discharge at Harsh Environmental Conditions for Hybrid Electric Aircraft Propulsion;Shahsavarian;IEEE Trans. Power Electron.,2022
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