On the Applicability of Exponential Recovery Models for the Simulation of Active Distribution Networks

This letter delivers a method to extend the use of the exponential recovery model (ERM) for the dynamic simulation of active distribution networks (ADNs). The conventional ERM uses exponential functions to describe the steady-state and transient characteristics of the grid, failing to replicate reverse power flow phenomena which may occur in modern ADNs during or after voltage disturbances. To solve this issue a new formulation employing polynomial functions instead of the original exponential is proposed.