关键词: 能量梯级高效利用, 农村综合能源系统, 场景聚类, 双层优化配置, 多目标优化

Abstract: To address the allocation problem of rural integrated energy systems, this paper proposes a multi-objective, bi-level robust optimization allocation method that considers constraints from external electricity, heat, and gas networks, as well as efficient energy cascade utilization, with flexible heat-to-power ratio combined heat and power (CHP) units as the core equipment. First, it develops a system model incorporating both the external networks and the core CHP units. Then, balancing thermodynamic efficiency and economic performance, it constructs a planning-and-operation integrated two-level optimization model. Finally, it solves the lower-level model using the ideal point method, while transforming and solving the upper-level model using the fully tolerant hierarchical method combined with a comprehensive subjective-objective weighting approach to obtain the optimal configuration scheme. The results indicate that the introduction of flexible heat-to-power ratio CHP units significantly improves multiple energy supply metrics. In particular, during peak heating or cooling seasons, the system can effectively balance economic performance with thermodynamic completeness (exergy efficiency).

Key words: efficient energy cascade utilization, rural integrated energy system, scenario clustering, bi-level optimization allocation, multi-objective optimization