Power flow management strategy for renewable hybrid energy system

In remote sites (north Canada, islands ...); diesel generators are used to produce electricity. This method is relatively inefficient, very expensive and responsible for the emission of large amounts of greenhouse gases. The development and use of a wind-solar-diesel-battery hybrid system will eliminate the main barriers to the deployment of renewable energy in remote locations and decrease production costs. The originality of this system consist in optimizing its overall performance by designing an intelligent algorithm and optimized strategy for power flow management which meet the operational constraints and the user's requirement. The main objective of this study is to determine the most efficient operation strategy for the power supply of isolated sites. This strategy should be characterized by an ability to reduce the use of diesel generator and integrate optimally the renewable resources while providing a significant reduction in fuel consumption and the emission of greenhouse gases. In order to validate the proposed strategies under real conditions, measurements of real weather conditions and power consumption for the months of February and may 2013 are considered. Once the assessment and analysis of results are complete, optimization will be done on the best strategy found with varying the number and size of the diesel generators. Simulations results are highlighted showing the impact of this approach.