ASPECTS REGARDING THE SUPPLY LINE LOSS OF A
UNBALANCED THREE-PHASED LOAD
The electrical power system normally operated in a symmetrical threephase
steady state mode. However, there are certain situations that can cause
non-symmetrical operations. The presence of the unbalanced three-phased
loads determines the apparition of the non-symmetrical systems involving
currents and voltages as well the extra-loss within the supply wire. In this paper
we present a mathematical proof in Mathcad of additional losses in the electrical
energy transmission line working under non-symmetrical conditions. Was
considered a simplified model, but the obtained result generalizes to complex
electrical circuits. Finally, we draw the conclusions and we indicate the
references.
Keywords: receiver phase, active power, symmetric components,
power transmission line, power line losses, unbalanced mode of operation
mathematical proof of additional losses under unbalanced
Cuvinte cheie: receptor trifazat, putere activă, componente simetrice,
linie de transport a energiei electrice, pierderi pe linia de alimentare, regim
dezechilibrat de funcţionare, demonstraţie matematică a pierderilor
suplimentare în regim dezechilibrat
