微电网与压缩空气储能系统的多能流协同调度

Multi-energy flow coordinated dispatching of microgrid andcompressed air storage system

为了适应风电功率、负荷波动与电网相匹配和提高系统往返和能源转化效率,基于压缩储能系统,增设压缩比与质量流量双参数调节策略以及耦合电解制氢系统,提出新型的耦合电解制氢热储存压缩空气储能系统。建立储气室动态模型,实现了储气室瞬时温度和压力与系统性能之间的联系,使得储能系统仿真计算更加接近实际。结果表明,采用耦合电解制氢的热储存压缩空气储能系统平衡微电网用电供需,日储能达到475 MW·h,可以满足高峰120 MW·h用电需求。与以往文献系统运行1 d的性能相比,新型的耦合电解制氢热储存压缩空气储能系统获得了最佳往返效率、能源转换效率和氢能供应,系统氢能的生产显著提高了能源转换效率。

To match wind power,load fluctuations,and the power grid,as well as to improve the system s round-trip and energy conversion efficiency,a new type of compressed air energy storage system paired with an electrolysis hydrogen production system is proposed.The dynamic model of the storage tank is utilized to establish the relationship between the instantaneous temperature and pressure of the storage tank and the system s performance,thereby enhancing the simulation accuracy.The proposed system achieves a daily energy storage capacity of 475 MW·h,which is sufficient to meet the peak demand of 120 MW·h,and balances the electricity supply and demand of a microgrid.Compared to previous literature,the proposed system attains the best round-trip efficiency,energy conversion efficiency,and hydrogen supply.Overall,the proposed compressed air energy storage system coupled with an electrolysis hydrogen production system is a promising solution for matching wind power and improving energy conversion efficiency.