Cooperation and Storage Tradeoffs in Power-Grids with Renewable Energy Resources

摘要: One of the most important challenges in smart grid systems is integration renewable energy resources into its design. In this paper, two different techniques to mitigate time-varying and intermittent nature generation are considered. The first one use storage, which smooths out fluctuations across time. second technique concept distributed combined with cooperation by exchanging among sources. This averages variation production space. paper analyzes tradeoff between these techniques. problem formulated as a stochastic optimization objective minimizing time average cost exchange within grid. First, an analytical model optimal provided investigating steady state system for some specific scenarios. Then, algorithm solve minimization using Lyapunov developed, results performance provided. These show that presence limited storage devices, can benefit greatly from cooperation, whereas large capacity, does not yield much benefit. Further, it observed gains be obtained only few energy-harvesting