配电网重构方法对比与技术展望

Comparison and Technology Outlook of Distribution Network Reconfiguration Methods

在“碳达峰、碳中和”目标下,配电系统正在演变为区域资源优化配置平台,对我国能源供给与消费的低碳化转型起到关键支撑作用。如何突破网架拓扑与系统运行的紧耦合实现灵活组网运行,以适应规模化分布式能源接入的配电系统柔性可控需求是现阶段研究重点。在此背景下,首先从网络拓扑、系统负荷、分布式电源、优化目标、约束条件、重构算法等6个方向出发,对配电网重构方法进行了总结,然后对其面临的交直流配电网重构算法、双高下交直流配电网时空解耦和灵活性量化等关键问题进行了分析和展望。

Under the goal of"carbon peaking and carbon neutral",the power distribution system is evolving into a platform for the optimal allocation of regional resources.It will play a key role in supporting the low-carbon transformation of energy supply and consumption in China.At the present stage,the research focuses on how to break through the tight coupling of network topology and system operation to achieve flexible network operation,to adapt to the flexible and controllable demand of large-scale distributed energy access.In this context,this paper first summarizes the distribution network reconfiguration methods from six aspects,including network topology,system load,distributed power sources,optimization objectives,constraints,and reconfiguration algorithms.Then,it analyzes and outlooks the key issues faced by it,such as the AC-DC distribution network reconfiguration algorithm,spatial and temporal decoupling of AC-DC distribution network under double high,and quantification of flexibility.