基于机会约束规划的综合能源微网群协调运行策略研究

A coordinated operation strategy for integrated energy microgrid clusters based on chance-constrained programming

随着我国分布式能源系统的迅速发展,在用能侧出现大量的综合能源微网,而相邻综合能源微网以微网群的形式协同运行将是综合能源微网今后发展的重要趋势。基于此,提出了一种适用于综合能源微网群的协调运行方法。该方法旨在协调分属不同利益主体的综合能源微网,在共享有限信息和彼此独立决策的条件下,寻求微网群系统的最优运行方案。考虑到综合微网群系统中通常含有较多可再生能源,为了提高运行方案应对可再生能源出力不确定性的鲁棒性,采用机会约束规划方法,以有效抑制不确定性的影响。最后,通过对含电力-天然气的微网群系统算例进行分析,结果表明,与传统集中方法相比,所提方法能较好提升系统的经济性和安全性,实现二种特性的权衡。

With the rapid development of China's distributed energy system,a large number of integrated energies microgrids appear on the energy-use side,and the coordinated operation of adjacent integrated energy microgrids in the form of microgrid clusters will be an important trend for the future development of integrated energy microgrids.This paper proposes a coordinated operation method suitable for integrated energy microgrid clusters.It aims to coordinate the integrated energy microgrids belonging to different stakeholders and seek the optimal operation scheme of the microgrid cluster system under the condition of sharing limited information and making decisions independently.Considering that the integrated microgrid clusters system usually contains lots of renewable energy,in order to improve the robustness of the scheme to deal with the uncertainty of renewable energy output,a chance-constraint programming method is adopted to effectively curb the influence of uncertainty.Finally,by analyzing a microgrid cluster system with electric power and natural gas,the results show that the proposed method can improve the economy and security of the system and realize the tradeoff between the two characteristics.