基于双层规划的能源互联微网系统的能量优化调度模型研究

Research on energy optimal dispatching model of energy interconnected microgrid system based on two-level planning

针对能源互联微网系统的多能源协调优化调度的问题,结合双层规划理论分析建模。以多能源间能量转化关系为上层决策控制基础,建立微网系统综合运行成本最小的目标模型,以电能子系统、热能子系统、气能子系统的运行计划为下层决策变量,构建各能源子系统最优运行经济优化指标。在模型求解方面,结合改进指标的多目标蚁群算法求解双层目标优化模型。通过算例结果可表明,所建立的双层优化调度模型适用于多能源类型的协调互补问题,充分发挥出微网系统运行的经济性优势。

Aiming at the problem of multi-energy coordinated and optimized dispatching of energy interconnected micro-grid systems,this paper combined bi-level programming theory to analyze modeling.Taking the energy conversion relationship among multiple energy sources as the basis for upper-level decision-making control,a target model for the minimum comprehensive operating cost of the micro-grid system was established,taking the operation plan of electric energy subsystem,thermal energy subsystem and gas energy subsystem as the lower level decision variables,the optimal operation economic optimization index of each energy subsystem was constructed.In terms of model solving,a multi-objective ant colony algorithm with improved indicators was used to solve a two-layer objective optimization model.The results of calculation examples can show that the established two-layer optimal scheduling model is suitable for the coordination and complementation of multiple energy types,and gives full play to the economic advantages of micro-grid system operation.