中文摘要：

对于某一固定的燃气轮机冷热电联供系统，建立联供系统分析模型，确定系统冷电比，即用户负荷的最佳冷电比。当各系数值不变，燃气轮机装机容量不影响系统冷电比，而燃气轮机发电效率越大，联供系统性能越好。对于实际用户负荷，分析冷热电联供系统“以电定冷”和“以冷定电”两种运行方式，当以“以电定冷”运行方式，带电压缩式制冷联供系统性能优于带补燃联供系统性能。当冷电比小于最佳冷电比时，冷热电联供系统采用“以电定冷”运行方式，当冷电比大于最佳冷电比时，冷热电联供系统采用“以冷定电”方式。

英文摘要：

An analytical model of gas turbine CCHP system was established. Cooling vs. power was determined, which was the optimal cooling vs. power of user＇s load. When each coefficient invariant, cooling vs. power was not affect by gas turbine installed capacity, but was increased with gas turbine power generating efficiency. The generating efficiency was greater, the performance of CCHP system was better. For the actual user＇s load, there were two operating modes, one was operated following the electric load, and the other was operating following cooling load. The performance of CCHP system with electric compression refrigerating unit was better than CCHP system with backup burner when operating following electric load. When the cooling vs. power was less than the optimal cooling vs. power, the operating mode of CCHP system was operated following the electric load. When the cold and power ratio was greater than the optimal cooling power ratio, the operating mode of CCHP system was operated following the cooling load.