计及再生制动能量的铁路潮流控制器功率柔性分配方法  

Flexible Power Assignment Method for Railway Power Flow Controller Considering Regenerative Braking Energy

作　　者：林锦杰 李勇[1] 胡斯佳 张杰 罗隆福[1] Lin Jinjie;Li Yong;Hu Sijia;Zhang Jie;Luo Longfu(College of Electrical and Information Engineering Hunan University,Changsha 410082 China;China Railway Signal&Communication(Changsha)Railway Traffic Control Technology Co.Ltd,Changsha 410006 China)

机构地区：[1]湖南大学电气与信息工程学院,长沙410082 [2]通号(长沙)轨道交通控制技术有限公司,长沙410006

出　　处：《电工技术学报》2023年第22期6121-6132,共12页Transactions of China Electrotechnical Society

基　　金：国家重点研发计划政府间国际科技创新合作重点项目(2018YFE0125300);国家自然科学基金项目(52061130217,52277090);湖南省研究生科研创新项目(QL20220078);长沙市杰出创新青年计划(KQ2009037,KQ2209010)资助。

摘　　要：为了以更高的性价比实现牵引供电系统(RPS)并网性能的提升,提出一种计及再生制动能量的铁路潮流控制器(RPFC)功率柔性分配方法,所提方法旨在确保系统满足并网指标的前提下降低RPFC的设计容量,能够同时适用于RPFC的前期设计与实时控制。首先,建立包含RPFC的V/v牵引供电系统数学模型,推导了RPFC两侧变流器补偿功率与一次侧功率因数间的数学关系;然后,在计及再生制动能量的前提下重点讨论了不同补偿目标及补偿模式对RPFC两侧变流器补偿功率的影响,并基于实测负荷数据的功率因数-功率(PF-P)分布特性提出一种精准模拟两相负荷的方法,为RPFC的设计提供指导,在保证系统能满足相关并网指标的前提下,设计计及再生制动能量的RPFC功率柔性分配方法;最后,利用实测负荷数据对所提方法的性能进行了验证。With the rapid development of the Chinese electrified railway,the grid-connection-related issues in the railway power system(RPS)have become more and more prominent.To deal with those issues,various schemes,e.g.,LC branches,static var compensator(SVC),and static synchronous compensator(STATCOM),are employed in the early days;however,they are not satisfactory enough from the perspective of either compensation performance or economic.The railway power flow controller(RPFC)has proven to be an effective route to deal with almost all grid-connection-related issues,while the needed large design capacity hinders its further commercialization.Many works were presented to cut down the design capacity of RPFC;however,most of them only focus on the traction mode of locomotives,which makes them lack generality and cannot be applied to the situation where regenerative braking energy(RBE)exists.To fill this gap,this paper proposes a flexible power assignment method for RPFC,in which the regenerative braking energy(RBE)is considered.The proposed method aims at reducing the converters’design capacity under the premise that the concerned system can meet the grid-connection indexes,and it can be used both in the planning and real-time control stages.Firstly,the mathematical model of an RPFC-integrated RPS adopting the V/v transformer is derived,and the relationship between RPFC’s compensated power and the primary power factors(PFs)is revealed.Then,considering RBE,16 compensation modes are developed based on the alternative positive or negative values exist in the primary PF angles,and the interaction mechanisms of primary PFs and Modes on RPFC’s compensated power are investigated.Based on the two-phase loads’PF-P distribution,a precise load imitation is implemented to guide RPFC’s design and performance evaluation.Finally,under the premise of meeting the concerned grid-connection indexes,a flexible power assignment method is designed,in which RBE is embraced.The real measured data-based simulation shows that,the distribu

关 键 词：铁路潮流控制器 并网性能 再生制动能量 容量优化 

分 类 号：TM922.3[电气工程—电力电子与电力传动]