含非粮生物质发电的微网动态经济调度

非粮生物质能能效优势明显,是未来重要的电能生产方式。文中主要对广西农村地区的非粮生物质发电特性和条件、负荷特性进行了统计分析,构建了沼气发电和蔗渣发电的数学模型;依据夏季和冬季不同的气候特点,考虑并网和孤岛两种运行方式,提出了包含光柴非粮生物质发电的微网动态经济调度模型。该模型在计及国家对可再生能源补贴价格的基础上,以发电成本最小以及联络线功率偏差最小为目标函数,其中夏季以沼气发电和光伏发电为主电源,冬季以蔗渣发电为主电源,柴油发电起到负荷备用的作用。算例结果表明,该模型可以全面评估分布式电源的经济性以满足用户多样化优化需求,为非粮生物质能源丰富的农村地区提供独立微网解决方案。

Dynamic Economic Dispatch Modelling of Microgrid with Non-food Biomass Power Generation

For its appreciable utilization rate, non-food biomass energy is an important future mode of distributed generation and energy production. This paper focuses on biomass power generation, photovoltaic power generation conditions, and analyzes the load characteristics in Guangxi rural areas prior to building a mathematical model of marsh gas power generation and bagasse power generation based on statistics. According to different characteristics of climate in summer and winter while considering the two operation modes grid-connection and islanding, a microgrid dynamic economic dispatch model including biomass generation is proposed. On the basis of subsidies for renewable energy prices, this model takes the minimum cost of power generation and minimum power deviation as the objective. In summer, marsh gas power generation and photovoltaic power generation is the main power supply, in winter, bagasse is the main power supply, while diesel generation plays the role as load reserve. Simulation results show that the model can fully evaluate the economy of distributed power users to meet their diverse needs by providing rural areas rich in non-food biomass energy with an independent scheme for microgrid solution. This work is supported by National Natural Science Foundation of China (No. 51407036)and National Basic Research Program of China (973 Program) (No. 2013CB228205).