New model for overhead lossy multiconductor transmission lines

A new model for time-domain electromagnetic transient analysis of overhead multiconductor transmission lines with frequency-dependent electrical parameters is presented. The model is based on the method of characteristics, which has been used before by means of the application of finite difference schemes. Conversely to the regular method of characteristics, the model presented here does not require the spatial discretisation along the line. Also, the frequency dependence of the electrical parameters is included by means of a transient resistance matrix. To validate the model, the results are compared to those from a frequency-domain method, the alternative transients program/electromagnetic transients program (ATP/EMTP) and the electromagnetic transients program-restructured version (EMTP-RV).