机构地区:[1]河北省分布式储能与微网重点实验室(华北电力大学),保定071003 [2]国网上海能源互联网研究院有限公司,上海201210
出 处:《电工技术学报》2025年第5期1503-1520,共18页Transactions of China Electrotechnical Society
基 金:国家电网有限公司总部科技资助项目(5108-202218280A-2-227-XG)。
摘 要:面对新能源发电及多元负荷的高比例接入,配电台区出现网架结构薄弱、局部负荷分配不均、承载能力不足等问题。旋转潮流控制器(RPFC)作为一种电磁式柔性互联装置,具有单位投资成本低、运行维护简单等优势,可从空间上对线路潮流进行柔性调控,分布式储能系统(DESS)可从时间上转移源荷功率,二者协调配合将共同提升配电台区的经济性及承载力。该文提出一种考虑配电台区经济性及承载力的RPFC与DESS三层协调规划方法。首先,构建RPFC及DESS的数学模型;其次,建立RPFC与DESS三层规划框架,其中,顶层为RPFC选址定容层,以RPFC综合投资成本最小为目标,中层为DESS选址定容层,以DESS投资成本最小为目标,底层为协调运行优化层,从安全性、经济性、灵活性三方面建立配电台区综合承载力指标并以此为目标优化运行功率;然后,基于三层规划框架,建立RPFC与DESS三层协调规划模型并采用改进引力场算法结合二阶锥规划的混合优化算法分层求解;最后,通过仿真算例验证了所提规划模型和求解算法的可行性与有效性。As a critical component of the power system,the power supply capacity of distribution station areas directly influences urban economic development and the quality of life for residents.With the growing integration of renewable energy sources,electric vehicles,and diverse load types,distribution station areas face significant challenges,including weak grid structures,uneven load distribution,and insufficient carrying capacity.The rotary power flow controller(RPFC),as an electromagnetic flexible interconnection device,offers advantages such as low unit investment cost and ease of operation and maintenance,enabling flexible control of line power flow in the spatial dimension.Meanwhile,the distributed energy storage system(DESS)enables power transfer between sources and loads in the temporal dimension.Their coordinated operation can significantly improve the carrying capacity of distribution station areas.Firstly,the basic structures of RPFC and DESS are introduced,followed by the establishment of their mathematical models.The RPFC is a flexible interconnection device that regulates power flow based on the principle of the rotary phase shifting transformer(RPST).By adjusting both the amplitude and phase of the series voltage,it allows for precise control of power flow along the line.The DESS,utilizing battery energy storage,exchanges power with the grid via a DC-AC inverter.Secondly,a three-layer planning framework for RPFC and DESS is constructed.In the spatial dimension,the framework first identifies the optimal power flow transfer channel,positioning the siting and sizing of the RPFC at the upper layer.This layer generates the optimal location and capacity for the RPFC with the objective of minimizing its total investment cost.The middle layer addresses the siting and sizing of the DESS,determining its installation location and capacity based on the RPFC configuration from the upper layer,aiming to minimize the DESS investment cost.The results from the middle layer are then passed to the bottom layer,which focuses
关 键 词:配电台区 承载力 旋转潮流控制器 分布式储能系统 协调规划
分 类 号:TM732[电气工程—电力系统及自动化]
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