Avaliação de Tensão e Corrente em Regime Permanente por Fase em Linhas de Transmissão de Energia Elétrica (Evaluation of Steady State Voltage and Current per Phase of Power Transmission Lines)

Vitor Fernando Couto (vitorfernandocouto@gmail.com)1, Sérgio Henrique Lopes Cabral (scabral@furb.br)2

1Universidade Federal de Santa Catarina
2Fundação Universidade Regional de Blumenau

This paper appears in: Revista IEEE América Latina

Publication Date: Oct. 2015
Volume: 13,   Issue: 10 
ISSN: 1548-0992

This work presents a methodology for obtaining the profile of current and voltage along each of the conductors of a ac power transmission line, in the steady state. It is based on the analytical solution of the system of equations that rules the behavior of a transmission line and its results are more significant results than those from the traditional Pi circuit, taken as reference. For illustrating the application of the proposed methodology data of a real power transmission line are taken and show how the amplitude of voltage and current may present surprising values although their measured values may be satisfactory at the line ends. Linking of this methodology with PMU systems allows the enhancement of line monitoring systems.

Index Terms:
Power Transmission Line, Voltage Profile, Transmission Line Modeling, PMU, Laplace Transform.   

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