| 微型冷热电联产系统动力装置的参数优化 |
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| 引用本文： | 李应林,张小松.微型冷热电联产系统动力装置的参数优化[J].东南大学学报,2010,26(2):297-301. |
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| 作者姓名： | 李应林 张小松 |
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| 作者单位： | 李应林(南京师范大学动力工程学院,南京,210024);张小松(东南大学能源与环境学院,南京,210096) |
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| 基金项目： | The Natural Science Foundation of Jiangsu Higher Education Institutions of China（No.2009112TSJ0124） |
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| 摘 要： | 建立了内燃机的通用数学模型,提出了内燃机的运行经济区.得出了改装后的LJ276M型内燃机的数学模型,并界定了此内燃机的运行经济区的边界范围,分析了此内燃机的运行优化曲线和最佳运行工况点.针对动力系统的冷热电、热电和供电3种操作模式,分别建立了能量转换数学模型,优化了动力装置的内燃机/变速箱传送比ies、电动机/变速箱传送比ims和电动机/内燃机传送比ime.结果表明：在冷热电模式下,ies和ims的优化值分别为2.9和1;在热电模式下,当动力系统需求负荷小于内燃机运行经济区的下限值时,ime取1,而当动力系统需求负荷超过内燃机运行经济区的下限值时,ime取0.85;在供电模式下,ims的最优值取2.5.
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| 关 键 词： | 冷热电联产 分布式供能 蓄电池组 内燃机 |
Parametric optimization of power systemfor a micro-CCHP system |
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| Li Yinglin Zhang Xiaosong.Parametric optimization of power systemfor a micro-CCHP system[J].Journal of Southeast University(English Edition),2010,26(2):297-301. |
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| Authors: | Li Yinglin Zhang Xiaosong |
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| Institution: | Li Yinglin Zhang Xiaosong(1.School of Power Engineering,Nanjing Normal University,Nanjing 210024,China;2.School of Energy and Environment,Southeast University,Nanjing 210096,China) |
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| Abstract: | The universal mathematical model of an engine is established,and an economical zone,in which an engine mainly provides medium output load at medium speed,is presented.Based on the experimental data and the universal model of such an engine above,a mathematical model of a refitted engine is provided.The boundary of the corresponding economical zone is further demarcated,and the optimal operating curve and the operating point of the engine are analyzed.Then,the energy transforming models of the power system are established in the mode of cooling,heating and power（MCHP）,the mode of heating and power（MHP）and the mode of electricity powering（MEP）.The parameter matching of the power system is optimized according to the transmission ratios of the gear box in the power distribution system.The results show that,in the MCHP,the speed transmission ratio of the engine to the gear box（ies）and the speed transmission ratio of the motor to the gear box（ims）are defined as 2.9 and 1,respectively;in the MHP,when the demand load of the power system is less than the low critical load of the economical zone,the speed transmission ratio of the motor to the engine（ime）is equal to 1,and when the demand load of the power system exceeds the low critical load of the economical zone,ime equals 0.85;in the MEP,the optimal value of ims is defined as 2.5. |
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| Keywords: | combined cooling heating and power distributed energy supply battery bank engine |
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