Frequency domain simulation of fault transients in transmission lines including measurement transformers

This paper presents the development of a computer program to analyze multiconductor transmission line fault transients including measurement transformers. The method used here is based on the Numerical Laplace Transform and the superposition principle. Two-port Admittance matrix representation of Non Homogeneous Transmission Lines and measurement transformer models are presented. The frequency domain simulation procedure is compared with results obtained from the commercial simulator PSCAD^® (Power System Computer Aided Design).