摘要
由于配电网与交通网间的耦合交互作用,高渗透率电动汽车接入下的配电网故障可能对两网的运行产生扩大影响,厘清故障下电动汽车充电负荷对电网和交通网运行状态的影响以及充电站充电负荷分布是及时阻断故障影响的基础。针对此,提出了考虑电力-交通交互的配电网故障下充电特征演化分析方法。首先,考虑配电网故障下充电负荷变化对配电网的影响,提出了计及充电负荷变化灵敏度的变步长重复潮流模型以计算配电网最大供电能力。其次,结合用户有限理性决策和动态交通均衡,构建了配电网故障影响下的交通运行状态演化模型。进一步,以电动汽车出行和充电为耦合单元,基于改进的Davidson函数描述供电能力对充电行为的影响,建立了两网交互的作用关系。最后,仿真分析了考虑网络耦合的配电网故障下充电负荷演化规律及其影响。
The fault of distribution networks with high penetration of electric vehicles(EVs) may have an expanded impact on the operation of distribution networks and transportation networks due to the coupling interaction between the two types of networks.Clarifying the influence of EV charging load on the operation state of distribution networks and transportation networks and the charging load distribution of the charging station is the basis for timely preventing the fault influence.An evolution analysis method for charging characteristics under distribution network faults considering the interactions between power and transportation is proposed.Firstly,considering the influence of the charging load change on the distribution network under distribution network faults,a variable-step-size repeating power flow model considering the sensitivity of the charging load variation is proposed to calculate the total supply capability(TSC) of the distribution network.Secondly,an evolution model of traffic operation state under the fault influences of the distribution network is constructed by combining bounded rational decision-making of users and dynamic traffic equilibrium.Further,taking EV travelling and charging as a coupling unit,the influence of power supply capacity on charging behavior is described based on the improved Davidson function,and the interaction relationship between the two types of networks is established.Finally,the evolution law of charging load and its influence under distribution network faults considering network coupling are simulated and analyzed.
作者
吴赋章
杨军
柯松
向慕超
凌在汛
邓桂平
WU Fuzhang;YANG Jun;KE Song;XIANG Muchao;LING Zaixun;DENG Guiping(Hubei Engineering and Technology Research Center for AC/DC Intelligent Distribution Network,Wuhan 430072,China;School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China;Electric Power Research Institute of State Grid Hubei Electric Power Co.,Ltd.,Wuhan 430077,China)
出处
《电力系统自动化》
EI
CSCD
北大核心
2024年第5期88-98,共11页
Automation of Electric Power Systems
基金
国家电网有限公司科技项目(5108-202299265A-1-0-ZB)。
关键词
高渗透率
电动汽车
配电网
交通网
故障
充电
最大供电能力
high penetration
electric vehicle
distribution network
transportation network
fault
charging
total supply capability
