考虑弹性与经济性的区域综合能源系统多能互补规划

Multi-energy Complementary Planning for Regional Integrated Energy System Considering Flexibility and Economy

  • 摘要: 区域综合能源系统的弹性反映了其应对自然灾害的抵御和恢复能力,在为用户提供安全、稳定、可靠的能源保障方面具有重要意义。以区域综合能源系统弹性提升的角度对其规划方法进行研究。基于自然灾害攻击模型和弹性分析过程,建立区域综合能源系统双目标三层鲁棒规划模型:上层模型以经济性和弹性为优化目标,实现对系统拓扑结构和设备容量的规划;中层模型以弹性指标最差为目标,寻找最严重的灾害攻击策略;下层模型在给定攻击策略的情况下,以弹性指标最优为目标实现系统的优化运行。采用一种结合NSGA-II和混合整数线性规划的多目标优化算法对该模型进行求解,并以基于IEEE RTS-79的区域综合能源系统为例验证对该模型进行验证。算例结果表明,该模型在规划过程中考虑了区域综合能源系统的多能互补特性,实现了弹性和经济性规划目标的相互协调,并以Pareto最优解集的形式输出不同侧重下的规划方案,有助于为规划人员的决策提供参考。

     

    Abstract: The resilience of an integrated community energy system (ICES) reflects its capacity of resistance and recovery against natural disasters, which is of great significance for ensuring safe, stable and reliable energy supplying to users. In this paper, we study the ICES planning method from the perspective of resilience improvement. The proposed model is a dual-objective three-layer ICES robust planning model, developed on the basis of the natural disaster attack model and resilience analysis process. The planning of the system topology and equipment capacity in the upper layer is implemented with resilience and economical objective functions. The most serious disaster attack strategy is sought in the middle layer, taking the worst resilience index as the objective. In the lower layer, the optimal operation of ICES with the best resilience is achieved under the given attack strategy. A multi-objective optimization algorithm combining NSGA-II and mixed-integer linear programming is utilized to solve the model, and its effectiveness is verified in an IEEE RTS-79-based ICES. The case study results indicate that the resilience and economical collaborative optimization is achieved in the planning process using the proposed model. In addition, the planning schemes with different emphases are presented in the form of Pareto front, providing valuable insights for decision makers.

     

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