家庭微网设计及经济化运行方案研究

随着我国经济的快速发展,电力需求也越来越大,我国发电机组容量逐渐增大。美加大停电后,大规模电力系统的缺点逐渐显现出来。以可再生能源为基础建立分布式电源具有安全可靠性高、损耗低、无污染的优点,本文以可再生能源为基础搭建家庭微网,并在此基础上,结合分时电价,最终实现主动参与系统调频,并通过PSCAD仿真对上述方案进行验证。

China's Optimal Industrial Structure:Theoretical Model and Econometric Estimation

With analysis of producer's and factor supplier's dual optimization motives,this paper developed an optimal nominal output growth rate model that can conduct quantified estimation.Result of estimation of China's optimal industrial structure between1992 and 2009 indicates that optimal nominal output growth rate model has successfully quantified the impact of major events occurring in the process of China's economic operation on the level of deviation between actual industrial structure and optimal industrial structure.Quantitative indicators involved in this model can provide industrial policy instruments for the Chinese government in developing and adjusting industrial structure targets,optimizing resource allocation and advancing industrial structure optimization and upgrade.

相变储热技术优化冷热电三联供运行

能源互联网是未来能源供应体系的重要发展方向,冷热电三联供实现了冷/热和电能之间的联系,是能源互联网的核心部件之一。在考虑集中式冷热电三联供运行时,燃气-蒸汽联合循环机组的启停机方式和运行状态将直接影响到三联供机组的工作效率与运行收益,合理的开机策略是保障三联供机组经济化运行的前提与基础。针对以燃气-蒸汽联合循环机组为动力装置,使用吸收式溴化锂制冷技术,配有以相变材料为主体的储能设备的三联供机组进行分析,根据对三联供机组运行相关参数,在对某地区的冷热电负荷进行详细调研的基础上,建立起集中式三联供运行的经济性目标函数,给出三联供机组经济化运行的启停机策略,从而达到提升工作效率、增加运行收益的目的。