基于动态电-碳需求响应的综合能源系统日前多元低碳交易方法

Multifaceted Day-ahead Low-carbon Trading Method for Integrated Energy Systems Based on Dynamic Electricity-Carbon Demand Response

随着电力行业碳减排任务的推进,电-碳耦合愈加紧密,为综合能源系统优化运行带来了新机遇、新挑战。根据新型电力系统多能互补、清洁低碳、安全可控、灵活高效、开放互动的基本特征,提出需求侧动态电-碳双响应的日前多级市场交易方法。首先,基于碳排放流理论,将源侧碳排放信息传递至各园区,实现差异运行方式下电力系统源-网-荷的精细化“电-碳”联动。然后,构建需求侧电-碳-绿证多元交易市场,鼓励更多主体参与市场,充分挖掘需求侧在经济、环境等方面的价值。最后,建立主网与各园区间的双层综合能源系统优化调度模型。上层主网发布动态电价与动态碳排放因子,下层需求侧的各园区生成有效的减排方案,使得源荷双侧形成有效互动,综合能源系统整体实现低碳经济运行。仿真结果表明,所提策略能够在较为精确表征碳排放的基础上,通过完善需求侧多元交易市场,深度挖掘园区的碳减排潜力,提高新能源的消纳率,有效平衡系统的经济性、安全性和低碳性。

With the promotion of carbon emission reduction in the power industry,the electricity-carbon coupling is becoming tighter,which brings new opportunities and challenges for the optimal operation of integrated energy systems.According to the basic characteristics of the new power system such as multi-energy complementarity,cleanliness and low carbon,safety and controllability,flexibility and efficiency,and openness and interaction,a day-ahead multi-stage market trading method with dynamic demand-side electricity-carbon dual response is proposed.First,based on the carbon emission flow theory,the carbon emission information of the source side is transmitted to each park,and the refined“electricity-carbon”linkage of the sourcenetwork-load in the power system in the differential operation mode is realized.Then,a multifaceted demand-side electricitycarbon-green certificate trading market is built to encourage more subjects to participate in the market,and fully tap the value of the demand side in economic,environmental and other aspects.Finally,a two-layer optimal scheduling model for integrated energy system between the main grid and each park is established.The main grid at the upper layer releases dynamic electricity price and dynamic carbon emission factors,and the parks on the lower-layer demand side generate effective emission reduction schemes,so that the two sides of the source and load form effective interaction,and the integrated energy system as a whole realizes low-carbon economic operation.The simulation results show that on the basis of more accurate characterization of carbon emissions,the proposed strategy can deeply tap the carbon emission reduction potential of the park,improve the accommodation rate of renewable energy,and effectively balance the economy,security and low carbon of the system by improving the demand-side multifaceted trading market.