Real-time methods for power-transmission networks simulation

This paper uses a new approach to the calculation of electromagnetic transients on transmission lines. The model is simple and well adapted to predict overvoltages and overcurrents. It takes into account initial conditions and sudden changes in the network configuration. This semi-analytical model gives immediate monitoring of the system??s evolution. Starting from the real-time general concepts, reduction methods are applied to our model. The first level is partitioning and parallel processing. The second is the approximation of the characteristic impedance and the exponential propagation function. To reduce complexity and decrease execution time, Pad6 approximation is used.Transients responses of lossy transmission lines are simulated and a comparison between the proposed model and the EMTP model is carried out.