Transmission Line Models for Switching Studies: Design Criteria I. Effects of NonTransposition and Frequency

A study is made of the effects of nontransposition on the performance of transmission lines. A non-transposed, lumped parameter model is presented. The dependence of line parameter values on frequency up to 6 kilohertz is developed and is used to calculate model parameter variations with frequency. It is concluded that nontransposition and frequency dependent models are necessary to design accurate transmission line models. The results are used in a companion paperl as criteria for transmission line model design.