# 34-6 PIERDERILE PE LINIA DE ALIMENTARE A UNUI CONSUMATOR TRIFAZAT LEGAT ÎN TRIUNGHI

THE SUPPLY LINE LOSS OF A THREE-PHASE LOAD IN DELTA CONNECTION
The electrical power system usually operated in a symmetrical three-phase steady state mode. But, there are certain situations that can cause non-symmetrical operations. The presence of the unbalanced three-phased loads induce the apparition of the non-symmetrical systems involving currents and voltages as well the extra-loss within the supply wire. In this work 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 in delta connection, but the obtained result generalizes to complex electrical circuits. Finally, we show the conclusions and references.
Keywords: three-phase load, delta connection, active power, electrical energy transmission line, supply line loss, unbalanced functioning regime, mathematical proof in the Mathcad of additional losses under unbalanced conditions
Cuvinte cheie: receptor trifazat, conexiune în triunghi, putere activă, linie de transport a energiei electrice, pierderi pe linia de alimentare, regim dezechilibrat de funcţionare, demonstraţie matematică în mediul Mathcad a pierderilor suplimentare în regim dezechilibrat

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