包含钠硫电池储能的微网系统经济运行优化

Economic Operation Optimization for Microgrids Including Na/S Battery Storage

微网有利于充分发挥可再生能源发电等分布式能源系统的效益,实现需求侧管理及现有能源的最大化利用,但与此同时,可再生能源发电所具有的间歇性使得微网系统承受扰动的能力相对较弱。储能技术的应用将对微网系统的稳定运行控制发挥重要作用。以钠硫电池为储能研究对象,建立了包含钠硫电池储能的微网系统经济运行优化模型,并以一个微网系统为例,分析讨论了多种因素对系统经济运行优化结果的影响,验证了所建立模型的合理性。

Microgrids could allow renewable and clean resources to penetrate into a utility and achieve demand-side management and maximum utilization of existing energy. However, negative impacts on stability are brought by the randomness of renewable generation. The applications of energy storage technologies will be more and more important for the security and stability. This paper chooses Na/S battery as distributed energy storage unit and introduces its characteristics. An optimization and dispatching model of microgrids, which includes Na/S battery as distributed energy storage unit, is proposed and the model is validated by studying a specified case with various factors.