多端柔性交直流配电网接纳电动汽车能力评估方法  

A Method to Evaluate the Capability of Distribution Networks with Multi-terminal VSC Interconnections for Accommodating Electric Vehicle

作　　者：张明珂 邱晓燕[1] 孙旭 张志荣 任昊 ZHANG Mingke;QIU Xiaoyan;SUN Xu;ZHANG Zhirong;REN Hao(College of Electrical Engineering and Information Technology,Sichuan University,Chengdu 610065,Sichuan,China)

机构地区：[1]四川大学电气工程学院,四川成都610065

出　　处：《电气传动》2022年第18期53-59,共7页Electric Drive

基　　金：四川省科技厅重点研发项目(2017FZ0103)。

摘　　要：电动汽车的大规模接入将对配电网的安全运行产生重大影响,传统交流配电网对电动汽车的接纳能力有限,而多端柔性交直流配电网由于具有良好的潮流控制能力以及较低的线路损耗,相比于传统交流配电网能够有效提升接纳电动汽车的能力。首先,将马尔科夫链与交通网结合,建立了路网耦合下的电动汽车充电负荷时空分布模型。随后,考虑多端柔性交直流配电网中电压源型换流器(VSC)的潮流控制特性,提出了一种多端柔性交直流配电网接纳电动汽车能力的评估方法。最后,通过算例评估了多端柔性交直流配电网直流网络结构以及VSC控制方式对接纳能力的影响。The growing electric vehicle(EV)charging load will produce significant impact on safe operation of distribution networks.The accommodation capability of EV charging load in traditional AC distribution networks is limited.AC/DC distribution networks with multi-terminal voltage source converter interconnections have good power flow control ability and low line loss.Compared with traditional AC distribution networks,it can effectively improve the accommodation capability of EV charging.Firstly,combining the Markov chain with the traffic network,the spatial-temporal distribution model of EV charging load under the coupling of road network was established.Then,considering the power flow control characteristics of VSC in AC/DC distribution network,an assessment method for accommodating electric vehicle in AC/DC distribution network was proposed,and a twolayer optimization model for maximizing the accommodation capacity was established.Finally,the influence of AC/DC network structure and VSC control mode on the accommodation capacity was evaluated through an example.

关 键 词：多端柔性 交直流配电网 电动汽车 接纳能力 电压源型换流器控制方法 

分 类 号：TM28[一般工业技术—材料科学与工程]