Modeling of an Intelligent Protection Scheme for Microgrids

This paper presents the simulation and model development, of an intelligent communication-assisted protection scheme, based on differential and under voltage digital relays. To do this, a classification of the current protection strategies was carried out. Furthermore, an adaptation of a static current protection model is presented, that intelligently respond, toward the different fault situations, also complemented by, the non-ideal model of potential and current transformers. Finally, the characteristics of the test-grid and its development in MATLAB/SIMULINK is presented, together with the results obtained.