Multirate network equivalent model for electromagnetic transient calculation in real time

This work illustrates a network equivalent multirate model based in a Laplacian Pyramid Filter bank of two channels: a low-frequency decimated channel and a high-frequency non-decimated channel. The first one is a detailed model whereas the second one is a simplified network model. The use of a Laplacian Pyramid scheme allows greater flexibility to select the decimation factors and the non-decimated channel model properly reproduces the response in the high-frequency band. Both features, contribute to overcome some limitations that former proposals, based on multirate processing, have experienced. The accuracy and the advantages of the herein proposed model are validated through simulations in a real case.