Transmission lines and cables

The book chapter considers transmission lines and cables focusing specifically on: Bergeron's model; frequency-dependent transmission lines; overhead transmission line parameters and underground cable parameters. For all except very short transmission lines travelling wave transmission line models are preferable. If frequency dependence is important, then a frequency transmission line dependent model will be used. Details of transmission line geometry and conductor data are then required in order to calculate accurately the frequency-dependent electrical parameters of the line. The simulation time-step must be based on the shortest response time of the line.