微燃机与小燃机在南方地区分布式联供系统中的应用比较

Comparison of the application in CCHP between micro turbines and small gas turbines in southern China

建立了考虑设备最大最小出力限制、温度和出力对设备性能影响的分布式联供系统优化运行混合整数非线性规划(MINLP)问题求解方法。在负荷确定的条件下,可对不同配置的分布式联供系统进行优化运行计算及经济、节能减排、调峰特性分析。针对我国南方地区气候及能源价格特点,对办公楼、商场、医院和宾馆四类典型城市建筑比较了分别由微燃机和小燃机为主机组成的分布式联供系统的适用性。计算结果表明,与冷、热、电分供形式相比,除办公楼外,由微燃机和小燃机为主机组成的分布式联供系统均具有较好的经济性;分布式供能系统节能减排、调峰性能优越;微燃机联供系统和小燃机联供系统经济性相当,但小燃机系统一次能源利用率较高。

A method is proposed to solve the mixed- integer nonlinear programming problem （MINLP）with consideration of output limitation, environmental temperature and output effect of the distributed energy system equipments, with which optimal operation, economy, energy saving, emission reduction and peak load regulation performance analysis of distributed energy system with different configurations can be implemented succesfully under certain energy demand. According to the characteristics of climate and energy prices in Southern China, the applicability of distributed energy system with micro - turbines and small gas turbines as the prime movers is discussed. The results indicate that distributed energy system with micro - turbines and small gas turbines has better economy, energy saving, emission reduction and peak load regulation performance than that of divided energy supply mode ; micro - turbine and small gas turbine eogeneration systems have equivalent economy performance ; the primary energy ratio of small gas turbine cogeneration systems are higher than that of micro - turbine cogeneration systems.