Abstract
With the rapid development of the global economy, there is a sharp shortage of fossil energy sources. Therefore the development of renewable energy technologies such as wind power and solar power has become a hot issue nowadays. However, due to the randomness, intermittency and instability of renewable energy, it is difficult to provide continuous and stable electricity when it runs independently. Hybrid renewable power systems with energy storage can improve the reliability of power supply. Capacity optimization is the key of hybrid renewable power system design and the basis of optimal scheduling. In this paper, the capacity optimization of hybrid renewable power system with energy storage is summarized and classified. According to the different energy storage modes of the hybrid renewable power systems, the capacity optimization models, optimization methods and the software used are introduced.
Highlights
With the sharp increase of energy demand, the rapid consumption of fossil energy and the social attention of the environment protection, the utilization of renewable energy is rising rapidly around the world
The results show that the WTPV-hydropower hybrid power system can guarantee high reliability and stability of power supply when running independently; when running in grid, it can reduce economic cost and improve power supply reliability
The results show that the model is more economical and environmental friendly than the conventional model and can effectively reduce the total cost of the system and carbon emissions
Summary
With the sharp increase of energy demand, the rapid consumption of fossil energy and the social attention of the environment protection, the utilization of renewable energy is rising rapidly around the world. Due to the constraints of intermittent and random characteristics of renewable resources, the renewable energy power systems, such as solar energy, wind energy, cannot be continuously and steadily powered, which have negative impacts on the stability and reliability of power system operation. In recent years, making full use of the complementarity characteristics of various renewable resources, and combining energy storage, hybrid renewable power systems have been proposed to achieve stable power output and reduce the impacts on the power grid. Reliable and stable power supply can be achieved, and the energy utilization rate and economic performance of the system can be improved through the capacity optimization.
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