考虑碳捕集系统的综合能源系统“源–荷”低碳经济调度

"Source-load"Low-carbon Economic Dispatch of Integrated Energy System Considering Carbon Capture System

为应对环境问题,提高能效,以电–气综合能源系统为研究对象,提出了一种以储碳设备为枢纽连接碳捕集电厂和电转气设备的运行模式,建立了一种基于分时能源价格的综合需求响应机制,并构建了考虑碳捕集系统和综合需求响应的电–气综合能源系统低碳经济调度模型。首先分析了碳捕集和电转气联合运行模式对于新能源消纳、降低系统碳排放以及提升各单元运行性能的作用;其次,在分时能源价格机制下,构建了考虑同种能源时移作用的纵向需求响应,以及不同能源替代作用的横向需求响应数学模型;基于综合需求响应和低碳运行机制,构建低碳经济调度模型,实现电–气综合能源系统的低碳经济运行。经修改的IEEE 39节点电力网络和比利时20节点天然气网络耦合系统验证表明,所提出的电气综合能源系统运行模式可有效促进风电消纳、降低碳排放。

To deal with environment problems and improve the energy efficiency,and taking the electricity&natural gas integrated energy system as the research object,a low-carbon and economic dispatch model is established,which considers the operation mode with carbon storage equipment as a hub to connect carbon capture power plants and electricity-to-gas conversion equipment.A comprehensive demand response mechanism based on time-sharing energy prices is constructed.Firstly,the effects of carbon capture and electricity-to-gas operation modes on the new energy consumption,the system carbon emission reduction and the operating performance improvement of each unit are analyzed.Secondly,a comprehensive demand response mechanism is introduced,which contains the vertical demand response of the same energy time shift and the horizontal demand response of different energy alternatives,to play the complementary role of electric or gas load.Then,the low-carbon economic dispatch model is established based on the low-carbon operation mode and comprehensive demand response.Finally,the proposed model is tested in the revised IEEE-39 node power network and the Belgium 20-node natural gas network coupling system,and the results show that the wind power consumption is promoted,and the carbon emission is reduced.