Modelagem de uma linha de transmissão com trecho aéreo, subterrâneo e subaquático para o estudo de desequilíbrio de tensão

This article presents the modeling of a transmission line with overhead, underground and underwater sections for study voltage unbalance predicted maximum load scenarios. The evaluation at design stage is an important preventive action not only reduction electrical losses, but also mitigation power quality phenomena operational interference in lines. After initial discussion about unbalance, its consequences how to determine it, by ATPDRAW software presented evaluate negative zero sequence unbalances. objective define parameters this system simulating compared allowed limit 1.5%, established ONS condition operate no full load. results obtained show that proposed aerial, capable operating within limits ANEEL. However, it was observed possible increase on extent future LT will directly affect calculations.