Because Gas Turbine CCHP makes full use of waste heat in flue gas,it is vital for energy-saving and emission-reduction.The system usually works in off-design condition.It is helpful to analyze energy saving characteristics of system.Due to the complexity of operating condition,modeling methods are used to analyze the off-design condition.However,existing modeling methods need large volume samples which are hard to obtain in most situations.A kind of Gas Turbine CCHP is designed on CMSVM2.0 platform.Based on small volume samples,LOOCVSVM (Leave-One-Out Cross Validation-Support Vector Machine) is applied to set up a suit of off-design models.The simulation results show that the proposed off-design models is feasible and has high accuracy.It is acceptable to apply LOOCV-SVM to the study of Gas Turbine CCHP.

Regional cooperative production system based on the gas engine,the operation time of cooling,heating and electricity and loading status are always changing and the working condition of operation is complicated.Therefore,to ensure the effective operation of energy station,it is necessary that carrying out real-time supervision on the running status of energy station,allocating load appropriately for each refrigerating unit,reducing the energy consumption of unit and improving the running economy of the unit.In the paper,we proposed a method of modeling and simulation on the lithium-bromide absorption-type refrigerating machine and compression-type refrigerating machine respectively.The variable working condition of main equipment was analyzed under different loading and environment conditions.Besides,we took the refrigeration cost of the energy station as the optimized objective function,produced the optimal loading of economy when the external conditions and cold loading keeps unchanged.An off-line calculation method was adopted to generate the data documents of the optimized running model in the configuration platform;the running optimization model can calculate the refrigerating capacity of the lithium bromide refrigerant unit and the centrifugal refrigerant unit respectively through fitted equation.

在燃气轮机的区域型联产系统中,由于调节模式和燃料电力价格标准的不统一,使得实际运行会造成大量浪费。为此选型GE LM1600燃气轮机,配备相应的溴化锂吸收式冷暖机和压缩式电制冷机,组成一个区域型能源站,通过建模仿真,分析主要设备的变工况特性,以系统每小时的经济花费为优化目标函数,计算出在不同调节模式和不同燃料电力价格比下的费用特性曲线。结果表明燃料电力价格比是影响系统运行经济性的关键参数,系统调节模式的选择应根据当时的燃料电力价格比作为参考依据。