多能互补的综合能源微网多目标优化运行方法研究

Research on Multi-objective Optimal Operation Method for Multi-energy Complementary Integrated Energy Micro-grid

综合能源系统在实现多种能源的综合利用,提高新能源利用率和减少碳排放等方面具有重要意义,是近年来诸多学者重点研究的领域之一。但是,目前对综合能源系统优化运行的研究较为局限,设备和模型种类较少,优化运行的目标函数单一。针对这些问题,提出了多能互补的综合能源微网多目标优化运行方法。首先,建立了运行成本、碳排放量和一次能源消耗的优化目标函数和系统的约束条件。其次,对比了传统分供系统与综合能源系统的运行成本,分析了电价改变对综合能源系统的影响,基于权重分析法对综合能源系统进行了多目标运行优化。通过算例分析表明,所构建的综合能源系统可以有效运行,相较分供系统成本可节省13.47%以上的成本,电价变动对该综合能源系统中设备的运行有较大影响,优化后的权重比可以显著平衡各个目标函数。

The integrated energy system is of great significance in realizing the comprehensive utilization of multiple energy sources,improving the utilization rate of new energy,and reducing carbon emissions.It is one of the key research fields of many scholars in recent years.However,the research on the optimization operation of integrated energy systems is relatively limited at present.The types of equipment and models are less and the objective function of optimal operation is single.To solve these problems,a multi-objective optimization operation method of integrated energy micro-grid with multi-energy complementarity was proposed.Firstly,the optimization objective function considering the operation cost,carbon emission,and primary energy consumption and constraints were established.Secondly,the operation costs of the traditional divided supply system and integrated energy system were compared and the impact of electricity price change on integrated energy system was analyzed.The multi-objective operation optimization of the integrated energy system was carried out based on a weight analysis method.The results show that the integrated energy system constructed in this paper can operate effectively,and compared with the divided supply system,it can save more than 13.47%of the cost.The change of electricity price has a great impact on the operation of equipment in the integrated energy system,and the optimized weight ratio can significantly balance each target function.