Une nouvelle stratégie de contrôle basé sur le concept de statisme pour la synchronisation et le partage de puissance dans un micro réseau autonome dans le nord du Canada

Abstract

In most isolated areas, electricity is produced exclusively thanks to diesel generators. But diesel is expensive and responsible for the emission of greenhouse gases. Generally, it is not reasonable to consider to connect it to the main grid because of cost issues mainly. Thereby the integration of renewable energy sources in isolated microgrids would have a positive impact on the diesel quantity needed. Reducing diesel allows improved air quality and a reduced cost of electricity production. However, the parallel operation of different energy sources in an isolated microgrid requires complex control algorithms. Therefore, in this research work, the proposed topology consists of two diesel generators, a wind turbine, solar panels and batteries. A new control strategy based on droop control concept to achieve high performance during transition synchronize between energy sources, to share the power in hybrid standalone power generation system, is presented. The synchronization between two diesel generators is assured thanks to cross current compensation. A Perturb and Observe method is used to achieve Maximum Power Point Tracking without using any speed sensors from the variable speed Wind Turbine. To achieve high performance from the Photovoltaic array, no MPPT algorithm is used, the DC-DC Buck-Boost converter used to regulate the DC voltage is used to extract the maximum power from the PV array. This DCDC Buck-Boost converter is also used to ensure power levelling during weather and load variation. Finally, the obtained simulation results show satisfactory performance in the presence of severe conditions, such as load and weather conditions change.

Date	8 Feb 2019
Original language	French
Awarding Institution	École de technologie supérieure
Supervisor	Ambrish Chandra (Supervisor) & Maarouf Saad (Co-supervisor)