摘要
传统能源系统不考虑多种能源之间的协同和互补,仅对电、气、热中的某种能源进行分析和利用。文中采用能量枢纽的概念表示各能源之间的耦合关系,同时考虑气电网络架构的运行约束。在实现各能源间转化、转移和存储等协同工作的基础上,建立含沼-风-光的综合能源微网优化模型,并对其优化调度进行了研究。为保证该模型的可求解性,对其中的电力系统潮流约束采用二阶锥松弛方法,对气管网约束进行泰勒展开,将原模型转换成凸规划模型。在由TEST6节点系统、6节点天然气系统和1台沼气池装置组成的综合能源微网测试系统上进行仿真分析,结果表明,考虑气电网络架构的调度优化结果满足实际运行要求,且该综合能源微网系统在可持续性、经济性和稳定性方面都具有一定的优越性。
The traditional energy system focuses only on analyzing and utilizing one source of energy among electric,gas and thermal energy,but does not consider the coordination and complementation among various energy sources.In this paper,the concept of energy hub is used to represent the coupling relationship among various energy sources,and the operation constraints of the gas-electric network architecture are considered.In addition to realizing the collaboration of conversion,transfer and storage of all energy resources,this paper establishes an optimization model of the integrated energy microgrid including biogas-wind-solar energy,and studies its optimal scheduling.To ensure the solvability of the model,the second order cone relaxation method is adopted for the power flow constraints of the power system,and the gas pipe network constraints are expanded by Taylor expansion,and the original model is transformed into a convex programming model.The simulation analysis on the integrated energy microgrid test system consisting of TEST6-node system,6-node natural gas system and a set of biogas digester system is performed and its results suggest that the integrated energy microgrid system has certain advantages in terms of sustainability,economy and stability.
作者
刘广
白晓清
刁天一
LIU Guang;BAI Xiaoqing;DIAO Tianyi(Key Laboratory of Power System Optimization and Energy Saving Technology,Guangxi University,Nanning 530004,Guangxi,China)
出处
《电网与清洁能源》
2020年第12期49-58,共10页
Power System and Clean Energy
基金
国家自然科学基金项目(51967001)。
关键词
能量枢纽
综合能源微网系统
沼气
电力系统
天然气系统
energy hub
integrated energy microgrid system
biogas
power system
natural gas system
