EFFECT OF DISPATCH STRATEGY ON THE PERFORMANCE OF HYBRID WIND-PVBATTERY-DIESEL-FUEL CELL SYSTEMS

This paper presents a variety of dispatch strategies for hybrid renewable systems including wind turbine, PV panel, fuel cell, and diesel generator and battery bank. These strategies are distinguished based on the priority of the usage of battery bank, fuel cell and diesel generator in case of power deficit and the precedence of charging of battery bank and filling the hydrogen tank. For a given system, resource and load profile, the performance of the system corresponding to each dispatch strategy is evaluated against both cost related and reliability related measures. It is found that the performance of the system is highly under the influence of the dispatch strategy incorporated in the system. Therefore, in sizing hybrid renewable energy systems, dispatch strategy should be also considered as a decision variable that needs to be found along with the optimum size of other components of the system.