“…Over the past decade, several efforts have been made towards the development and implementation of control strategies for DERs (e.g., [3], [4], [5], [6], [7], [8]). Important contributions in this direction include the use of conventional and model-based feedback control algorithms to regulate various types of grid-connected DERs in order to enhance power system stability (e.g., [9], [10], [11], [12]), mitigate power quality problems (e.g., [13]) and improve the continuity of electricity supply (e.g., [14]), as well as the development of various distributed control and coordination architectures using multi-agent based control approaches (e.g., [15], [16], [17], [18]).…”