基于混合整数非线性规划的综合能源系统优化配置研究

Optimization allocation of integrated energy system based on mixed integer nonlinear programming

综合能源系统(integrated energy system,IES)的容量配置是系统运行稳定性及经济效益的重要影响因素之一,是系统规划阶段的重点研究内容。为探究电转气设备在系统中的最佳工作模式及储能设备、光伏、风机对系统经济性的影响,本文将上述设备引入综合能源系统,并以经济效益为优化目标,构建了计及容量配置约束、五母线平衡约束及储能约束的混合整数非线性规划模型。以北方某市民服务中心为例,验证了模型的有效性,并对6种运行方案做了对比分析。结果表明,电转气等设备的合理配置可以有效提高综合能源系统的经济性,为其后续运行阶段的研究提供了理论基础及技术支撑。

The capacity allocation of integrated energy system(IES)is one of the important factors affecting system operation stability and economic benefit,and is the key research content in the system planning stage.To explore the best working mode of power-to-gas equipment in the system and the influences of such factors as energy storage equipment,photovoltaic equipment and fan on the system economy,this paper introduces the above equipment into the IES.Then,a mixed integer nonlinear programming model considering the capacity allocation constraints,fivebus equilibrium constraints and energy storage constraints is constructed with economic benefit as the optimization objective.Moreover,a citizen service center in north China is taken as an example to verify the effectiveness of the model,and the six operation schemes are compared.The results show that,the reasonable allocation of power-togas equipment can effectively improve the system economy,which provides a theoretical basis and technical support for the subsequent research on the operation stage of the IES.