Part 2: Reactive Compensation of the Linear Load in Three-Phase Four-Wire Systems Supplied with Asymmetrical Sinusoidal Voltage Following Currents’ Physical Components Theory

Zbigniew SOLJAN

Abstract

Four-wire systems are the most common ones in everyday life. Electrical installations within the home, office, or industrial plant are mostly four-wire installations. Receivers connected to such a system are mainly single-phase loads, which from the power connection are an unbalanced three-phase load. Besides, the load imbalance, the supply voltage also has some asymmetry. Voltage asymmetry, load imbalanced, design of reactance compensators are issues that were not simultaneously included in the power equation in fourwire systems. This article presents the mathematical fundamentals of the construction of reactance  compensators operating in voltage asymmetry

Keywords

power theory, asymmetrical supply, reactive compensation

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Bilbiography

[1] L.S. Czarnecki, P. Bhattarai (2015), Moce i kompensacja w obwodach z odkształconymi i niesymetrycznymi przebiegami prądu i napięcia, Część 8: Moce i kompensacja obwodów z niesymetrycznym napięciem zasilania, Czasopismo on-line: Automatyka, Elektryka, Zakłócenia, vol. 6, No 1, pp. 8-18.
[2] L.S. Czarnecki, P. Bhattarai (2015), Currents’ Physical Components (CPC) in three-phase systems with asymmetrical voltage, Przegląd Elektrotechniczny, R. 91, No 6, pp. 40-47.
[3] L.S. Czarnecki, P. Bhattarai (2015), Reactive compensation of LTI loads in three-wire systems at asymmetrical voltage, Przegląd Elektrotechniczny, R. 91, No 12, pp. 7-11.
[4] Z. Sołjan, G. Hołdyński, M. Zajkowski (2019), Decomposition of the load’s current supplied from a sinusoidal and asymmetrical voltage source in accordance with the Currents’ Physical Components (CPC) Theory, 20th International Scientific Conference on Electric Power Engineering (EPE)., pp. 389-394.
[5] G. Hołdyński, Z. Sołjan, M. Zajkowski (2019), CPC-based reactive compensation at three-phase four-wire systems powered from asymmetric sinusoidal voltage source, 20th 20th International Scientific Conference on Electric Power Engineering (EPE)., pp. 395-400.
[6] L. S. Czarnecki, P. M. Haley (2013), Reactive compensation in three-phase four-wire systems at sinusoidal voltages and currents, International School On Nonsinusoidal Currents And Compensation (ISNCC 2013), pp. 1-6