Dispatch Strategy as a Design Variable in Hybrid Renewable Energy System Optimisation

In hybrid renewable energy system (HRES) with multiple storage and auxiliary/backup components different dispatch strategies can be defined based on the usage and charging order of these components. This paper presents a new formulation for size and configuration optimisation of HRES by including the dispatch strategy as a design variable. The new formulation is implemented in the optimisation tool MOHRES and is used to conduct three case studies with various scenarios. It is shown that compared to traditional method of predefining the dispatch strategy prior to size optimisation, inclusion of the dispatch strategy in size optimisation leads to superior solutions.