考虑负荷可调度特性的农村配电系统光-储-充规划展望

Overview of Photovoltaic-Storage-Charging Planning for Rural Distribution System Considering Load Dispatchability Characteristics

新型电力系统背景下,分布式光伏发展迅速,对配电系统的光伏接纳能力提出更高要求。与城市配电系统相比,农村配电系统网架弱、供电线路长、负荷多但小而分散,分布式光伏规模化接入显著增加了电网运行风险,光伏消纳能力有限,严重阻碍农村光伏的进一步开发,提升新型农村配电系统的光伏消纳能力迫在眉睫。随着乡村振兴战略的实施,农村配电系统中空调、采暖与电动汽车等灵活负荷不断涌现,给利用负荷消纳光伏提供了可能。在对柔性负荷可调度特性建模研究现状进行分析的基础上,结合现有配电系统光伏电站、电池储能系统与电动汽车充电站规划的研究现状,对提高农村配电系统光伏消纳能力的光-储-充规划方法进行了展望。

Under the background of new power systems,the rapid development of distributed photovoltaic has put forward higher requirements for the photovoltaic acceptance capacity of distribution systems.Compared with urban distribution systems,rural distribution systems have weak grid structures,long power supply lines,large but small and dispersed loads.Large-scale distributed photovoltaics integration significantly increases the operational risks of the power grid,and the photovoltaic consumption capacity of the grid is limited,which seriously hinders the further development of rural photovoltaics.Thus,improving the photovoltaic consumption capacity of new rural distribution systems is urgent.With the implementation of the rural revitalization strategy,flexible loads such as air conditioning,heating,and electric vehicles are constantly emerging in rural distribution systems,providing the possibility of utilizing loads to absorb photovoltaic energy.Based on the existing research of modeling the schedulable characteristics of flexible loads,this paper combines the current research status of photovoltaic power stations,battery energy storage systems,and electric vehicle charging station planning in existing distribution systems,and looks forward to the PV-storage-charging planning methods for improving the photovoltaic consumption capacity of rural distribution systems.