中文摘要：

对北京的五类城市建筑，分别以各种容量的燃气轮机、燃气内燃机为主机，结合逐时负荷特性，进行分布式热电冷三联供系统的优化运行计算及相关性能分析。对两类主机在系统中的性能特点进行比较。研究表明，在不同的容量范围、用户负荷热电比下，两类主机的适用范围有所区别。燃气轮机较适用于主机容量大、用户负荷热电比高的场所，燃气内燃机在主机容量小、用户负荷热电比低的应用场合更具优势。

英文摘要：

Operating strategy of optimization and performance analysis was conducted targeting at CCHP （combined cooling, heating and power） systems in five categories of construction in Beijing, the prime movers of which are either gas turbines or gas engines. The results show that gas turbines are suitable for systems of large capacity and high heat-to-power ratio while gas engines are relatively of more advantage for systems of small capacity and low heat-to-power ratio.