POWERS AND COMPENSATION IN SYSTEMS WITH NONSINUSOIDAL VOLTAGES AND CURRENTS Part 8. Powers and Reactive Compensation at Asymmetrical Supply Voltage

Abstract

Three-phase loads are sometimes supplied with asymmetrical voltage, however, the present state of electrical engineering

does not allow for describing them with a power equation, meaning with a relationship between all powers. It can be done only

at the assumption that the supply voltage is symmetrical. It makes impossible of designing reactive compensators for the reactive power

and the unbalanced power compensation for the load balancing. The development of the power equation of loads with asymmetrical

supply voltage and fundamentals of reactive compensation of such loads is the subject of this paper.

Keywords

Power definitions, unbalanced loads, reactive compensators, Currents Physical Components, CPC

Fig.

Bilbiography

[1] C.L. Fortescue (1918): Method of symmetrical components as applied to the solution of poly-phase networks, AIEE 37, pp. 1027–1140.

[2] L.S. Czarnecki (2005): Moce w obwodach elektrycznych z niesinusoidalnymi przebiegami prądów i napięć, Oficyna Wydawnicza Politechniki

Warszawskiej.

[3] L.S. Czarnecki (2011), Moce i kompensacja w obwodach z odkształconymi przebiegami prądu i napięcia, Część. 6. Reaktancyjne

równoważenie trójprzewodowych obwodów trójfazowych z sinusoidalnymi przebiegami prądu i napięcia, Automatyka, Elektryka,

Zakłócenia, Nr. 6, pp. 51–57, www.epism-aez.pl .