Computational Aspects of the Dynamic Response of a Microgrid: a Comparative Analysis

The paper presents the analysis of the dynamic response of a microgrid, obtained by means of two different simulation environments, i.e. EMTP-RV and Simulink. The aim of the study is to investigate on some differences that could arise between the two environments and to explore when such differences could become meaningful, in particular for the analysis of microgrids. The system under study is a medium voltage microgrid coupled to an external network and containing stationary and rotating loads and a battery energy storage system. The considered case studies are: i) a step load change in order to compare the responses in both grid-following and grid-forming control modes for the battery energy storage system; ii) voltage and frequency step changes to compare two types of loads, namely exponential load and induction motor and iii) the islanding transition of the microgrid.