Predictive based reliability analysis of electrical hybrid distributed generation

Abstract

In this paper, the predictive based reliability analysis of an electrical hybrid distributed generation (EHDG) is presented. The effect of a battery bank, as an electrical storage system, is investigated on the reliability of a distributed generation system (DGS) which forms an EHDG with a photovoltaic system as the main source. More precisely, to solve the problem of the intermittent nature of the sun, which effects on the reliability, an interesting solution based on utilization of an electrical energy storage system (EESS) is studied. To improve results accuracy of the distributed generation (DG) reliability assessment which are usually obtained by the starting and the switching mode probability of the integrated Markov model, a simulation-based method is carried out in this paper. Therefore, all available states of renewable energy resources in DGSs are considered in this study. For this purpose, availability of the electrical energy of a simple DGS and an EHDG is simulated by TRNSYS (Transient System Simulation Tool) software and is compared. The proposed method can be used before implementation of an EHDG based system during the feasibility study phase and leads to proposing an appropriate solution to manage the electrical energy and the energy consumption in a system.