Optimal operation of autonomous microgrid for minimization of energy loss, cost and voltage deviation

In this paper, a distribution network has been transformed into a micro grid that contains varying loads, renewable generating sources such as PV & Wind and the controllable generating sources such as diesel generator and battery source. The extended distribution network under consideration is assumed to operate in autonomous mode of a micro grid due to surplus renewable energy sources connected to the network. The objectives considered for minimization are the network energy loss, cost and the voltage deviation. The proposed optimal operational strategy mainly focused on the economic constraints imposed in meeting the load. Thus, this paper presents an economic planning and operation of an independent micro grid with hybrid energy sources and it is demonstrated with the help of IEEE 69-Bus Distribution Test System by making use of Harmony Search algorithm in multi objective basis using non-dominated sorting procedure.