【摘要】 微型燃气轮机(简称微燃机)冷热电联产系统(combined cooling,heating and power,CCHP)具有极高的能源利用效率,其经济效益明显。首先建立了基于微燃机的冷热电联产系统的仿真模型及经济优化模型,分别分析了冷热电负荷比例、燃料价格、剩余电力上网政策、购电电价等对系统经济性的影响。在分析电价的影响时,分别按固定电价和实时电价进行了分析。算例分析表明微燃机CCHP系统的运行成本不仅跟冷热电负荷的需求有关,还与电网电价、微燃机燃料价格和锅炉燃料的价格有关。更多还原

【Abstract】 Micro-gas-turbine based combined cooling,heating and power( CCHP) has a very high energy efficiency,with its obvious economic benefits. This paper proposes a CCHP model and based on which the economic operation of CCHP is concerned to minimize the operation cost. The price of electricity supplied from a power grid,fuel price,load ratio and the price of the electricity sold to the grid are considered in this model. With analyzing the influence of the electricity price,we take time-of-day price and spot power price into account respectively. From analyzing the result of the example,we can find out that the operation cost of the micro-gas-turbine based CCHP is not only related to the demand of cooling and heating loads,but also to the price of the grid,the fuel of micro-gas turbine,and the cost of the boiler’s fuel.更多还原