基于相对捕集度的碳捕集电厂灵活运行多目标优化决策分析

Analysis on Relative Capture Degree Based Multi-objective Optimization Decision of Flexible Operation of Carbon Capture Plant

碳捕集设备的灵活运行模式给碳捕集电厂带来了更多的运行调控策略,在灵活运行模式的基础上,定义了相对捕集度的概念,根据相对捕集度推导出灵活运行模式下的运行公式。给出了碳捕集设备的启动能耗公式。基于相对捕集度,以减排量和机组煤耗作为目标函数,运用多目标细菌群体趋药性算法对目标函数进行优化,同时完成发电机组间的出力优化分配。最后以单个碳捕集电厂为例,将基准运行模式和灵活运行模式进行了对比分析,并通过减耗率的大小来评价灵活运行模式优化的效果,仿真结果说明了所提方法的有效性。

The flexible operation mode of carbon capture equipment has brought more operation control strategies to the carbon capture plant.The concept of relative capture degree is defined based on the flexible operation mode.The formula is derived under the flexible operation mode according to the relative capture degree.The start energy consumption formula of the carbon capture equipment is given.By taking the emission reduction and coal consumption of generators as the objective function,the multi-objective bacterial colony chemotaxis algorithm is used to optimize the objective function based on the relative capture degree.At the same time,the optimal percentage of output between the generators is completed.Finally,simulation test is carried out in a carbon capture plant.By comparing the basic running mode with the flexible operation mode,the concept of proportion of emission reduction to coal consumption is given to analyze the result of optimization.Simulation results have proved the effectiveness of the proposed method.