乡村多源供能系统特性分析与协同优化研究

Research on the characteristic analysis and collaborative optimization of rural multi-source energy supply system

综合能源系统能够统筹协调多种异质能源,可以最大化地提高用能收益、提升能源综合效率,是乡村地区节能降耗的重要手段。现阶段,建设乡村综合能源系统已成为我国建设可持续发展绿色“新乡村”的全新方向。文章以经济性为研究目标,考虑冷热电多能互补,提出一种乡村小型综合能源系统的优化运行控制策略,以实现系统内部复杂多能流的最优控制。综合考虑乡村综合能源系统的基础架构和关键设备独立运行模型,分析系统多能互补运行机制并建立系统的能源枢纽(Energy Hub,EH)模型,构建以日运行综合成本最低为目标的优化运行模型,并应用于某乡村综合能源系统冬夏供能季节的优化运行。结果表明:考虑多能互补的综合能源系统优化运行控制策略,能在满足用户高品质负荷需求的前提下大幅度降低能源购置成本。

Integrated energy system is an important means of energy saving and consumption reduction in rural areas,which can coordinate a variety of heterogeneous energy sources to maximize energy utilization benefits and improve comprehensive energy efficiency.At the present stage,building rural integrated energy system has become a new direction of constructing sustainable green“new countryside”.Taking the economical efficiency as the research goal,this study proposes an optimal operation control strategy for rural small-scale integrated energy system considering the complementary operation of cold,heat and electricity,so as to realize the optimal control of complex multi-energy flow inside the system.Based on the comprehensive consideration of the infrastructure and the independent operation model of key equipment of the rural integrated energy system,the multi-energy complementary operation mechanism of the system is analyzed and the energy hub model of the system is established to complete the construction of the optimized operation model aiming at the lowest comprehensive daily operation cost.On this basis,the model is applied to the optimization operation of a rural integrated energy system in winter and summer.The results show that the optimal operation control strategy of integrated energy system with multi-energy complementarity can greatly reduce the energy acquisition cost on the premise of meeting the demand of high quality load.