考虑储液式碳捕集电厂的含风电系统低碳经济调度

Low-Carbon Economic Dispatch of Power System with Wind Power Considering Solvent-Storaged Carbon Capture Power Plant

碳捕集电厂可以实现火电电能生产的低碳化,是构建清洁能源体系的重要技术路径之一。配置了溶液存储器的碳捕集电厂能够解耦CO2的吸收与再生两个环节,其捕碳和发电的协调运行能力更强。根据储液式碳捕集电厂的运行机理与能流特性,建立其捕碳与发电出力模型,并构建二维坐标图定量研究无储液与储液式碳捕集机组的总发电出力与净出力运行区间。基于此,建立计及储液式碳捕集电厂的含风电系统低碳经济调度模型,该模型以系统总运行费用最低为目标函数,考虑系统发电成本、碳交易成本以及风电出力不确定性带来的运行风险。以20机系统为例,对含储液式碳捕集电厂的系统优化调度进行研究,结果验证了所提模型的合理性与有效性。

As one of the important technical paths to build a clean energy system, carbon capture power plant can achieve low carbonization during thermal power generation. The carbon capture power plant equipped with solvent storage can decouple the absorption and regeneration processes of CO_(2),which makes its coordinated ability of carbon capture and power generation stronger. According to the operating mechanism and energy flow characteristics of solvent-storaged carbon capture power plant,the carbon capture and power generation output model is constructed. Besides, the operating range of the total output and net output of carbon capture units with or without solvent storage are quantitatively studied by drawing two-dimensional coordinate diagram. Based on this, the low-carbon economic dispatch model of power system integrated with wind power considering solvent-storaged carbon capture power plant is established. With the goal of the lowest overall operating cost, the model takes into account the power generation cost, carbon trading cost and risk cost of the system. Taking the 20-unit system as an example, the optimal dispatch of system accommodated solvent-storaged carbon capture power plant is studied. The rationality and effectiveness of the proposed model are verified by numerical results.