100 MW超临界二氧化碳布雷顿循环发电系统热力性能研究

Study on Thermal Performance of 100 MW Supercritical Carbon Dioxide Brayton Cycle Power Generation Systems

使用EBSILON软件对100 MW超临界二氧化碳布雷顿循环发电系统进行仿真研究,选择以分流再压缩与再热耦合作为循环方式,讨论了关键参数包括压缩机入口压力、压缩机出口压力、再热透平入口压力、压缩机分流比对系统循环效率的影响。研究结果表明:主压缩入口压力、主压缩机出口压力、分流比、再热压力对系统循环效率有较大影响。最后使用遗传算法进行全局优化,找到了最高循环效率点的最佳关键参数。

The 100 MW supercritical carbon dioxide Brayton cycle power generation system is simulated by using Ebsilon software with the coupling of split recompression and reheat selected as the cycle mode.The effects of key parameters are discussed,including the compressor inlet pressure,the compressor outlet pressure,the reheat turbine inlet pressure and the compressor split ratio on the cycle efficiency of the system.The results show that the inlet pressure of main compressor,the outlet pressure of main compressor,the split ratio and the reheat pressure have a great influence on the cycle efficiency of the system.Finally,genetic algorithm is used for global optimization to find the best key parameters to achieve the highest circulation efficiency.