Simetrične komponente

Symmetrical components

Kad trofazni sistem nije simetričan, kao pri kratkim spojevima i prekidima provodnika, stanje se ne može odrediti iz jedne faze, pa se tri neuravnotežena fazora razlažu na tri simetrična sistema: direktni, inverzni i nulti redosled. Ovde je metod od osnovnih relacija i veza između faznih i linijskih veličina do nultih impedansi i proračuna nesimetričnih kvarova u prenosnim i distributivnim mrežama, sa zadacima iz Analize EES na FTN-u.

When a three-phase system is unbalanced, as in short circuits and broken conductors, its state can’t be found from one phase, so the three unbalanced phasors are split into three balanced sets: the positive, negative and zero sequence. Here is the method from its basic relations and the links between phase and line quantities to zero-sequence impedances and the calculation of unbalanced faults in transmission and distribution networks, with problems from Power System Analysis at FTN.