Renewable energy management based on Timed Hybrid Petri Net approach for an isolated chalet application

Abstract

Energy management is proposed in order to make a best use of the renewable generation and storage units. The management strategy should guarantee a permanent production of electricity in an isolated chalet for an off-grid system supplied by photovoltaic panels and batteries. The chalet composed by three types of load: priority loads where they will be supplied all time, secondary load where it may be supplied only in case of energy availability and finally the extra-loads will be supplied during a definite time. This paper presents a model for isolated system behavior in terms of control powers exchanged between sources power and loads demand. The model is based on Timed Hybrid Petri Net formalism. Therefore, an iterative algorithm for power flow management satisfies requirement of each type of load based on the photovoltaic panels production and the storage units. Obtained results show that the proposed strategy satisfies the priority loads during the whole day, covers the secondary load energy and gives user liberty to exploit the extra-loads as possible.