Transmission line model for variable step size simulation algorithms
In this paper, we describe a novel modeling approach for transmission lines that overcomes the maximum step size constraint of regular line models used in electromagnetic transients programs. The new model allows us to accurately simulate wave propagation phenomena as well as low network frequency variations with maximum efficiency, as the simulation step size is no longer restricted to model requirements, but can be adjusted according to the current transient state of the network. The model was tested with a CIGRE line energization case study which was performed utilizing a variable simulation step size algorithm for a combined study of electromagnetic transients and transient stability.
transmission line modeling electromagnetic transients transient stability