DataSheet1_Economic operation strategy of an electricity–heat coupling system considering complementary low-carbon characteristics of source-load.docx

The operation effects of a source-side carbon capture power plant (CCPP) and power-to-gas (P2G) equipment do not match. The response range of the load-side traditional demand response strategy is small, and the adjustment period is limited, which leads to the problem that the complementary potential of low-carbon characteristics on both sides of the source and load is not fully utilized. This article proposes an electricity–heat coupling system scheduling strategy considering the complementary low-carbon characteristics of “source-load.” First, the low-carbon operation characteristics of CCPP and P2G with integrated, flexible operations are analyzed, and a source-side CCPP-P2G comprehensive flexible operation mode is proposed. Second, based on the characteristics of flexible adjustment and mutual substitution of electricity and heat load, a load-side comprehensive demand response method is proposed. Finally, the complementary mechanism of low-carbon characteristics on both sides of the source and load is analyzed, and a low-carbon economic dispatch model of the electricity–heat coupling system is constructed to realize the source–load collaborative low-carbon operations. The simulation analysis verifies that the proposed strategy can give full play to the energy time shift advantages of the source-side CCPP and P2G and improve the economic and environmental benefits of the system operations.

源侧碳捕集电厂（carbon capture power plant, CCPP）与电转气（power-to-gas, P2G）设备的运行效能不匹配，传统负荷侧需求响应策略的响应范围有限、调节周期受限，导致源荷两侧低碳特性的互补潜力未得到充分利用。本文提出一种考虑“源-荷”低碳特性互补的电-热耦合系统调度策略。首先，分析集成柔性运行模式的CCPP与P2G的低碳运行特性，提出源侧CCPP-P2G综合柔性运行模式；其次，基于电热负荷柔性调节、电能与热能相互替代的特性，提出负荷侧综合需求响应方法；最后，剖析源荷两侧低碳特性的互补机制，构建电-热耦合系统的低碳经济调度模型，实现源荷协同低碳运行。仿真分析验证了所提策略可充分发挥源侧CCPP与P2G的能量时移优势，提升系统运行的经济性与环境效益。