含规模化电动汽车接入的配电网量子化状态系统运行模拟方法  

Quantized State System-based Simulation for Distribution Networks With Large-scale Integration of Electric Vehicles

作　　者：冀慧强 李娟 徐晶 李双 于浩[2] 李鹏[2] JI Huiqiang;LI Juan;XU Jing;LI Shuang;YU Hao;LI Peng(Economic Technology Research Institute,State Grid Tianjin Electric Power Company,Hedong District,Tianjin 300160,China;Key Laboratory of Smart Grid of Ministry of Education(Tianjin University),Nankai District,Tianjin 300072,China)

机构地区：[1]国网天津市电力公司经济技术研究院,天津市河东区300160 [2]智能电网教育部重点实验室(天津大学),天津市南开区300072

出　　处：《电网技术》2023年第8期3355-3361,共7页Power System Technology

基　　金：国网天津市电力公司科技项目(KJ21-1-36)。

摘　　要：电动汽车的大量接入将显著改变配电网的需求特征,需要以有效的运行模拟方法为支撑,满足配电网运行分析、车-网灵活互动等应用需求。电动汽车在配电网中的接入、退出、充电功率变化等具有离散化特征,随着接入数量剧增,传统时域运行模拟方法的求解效率会明显下降。对此,提出一种基于量子化状态系统(quantized state system,QSS)理论的含电动汽车配电网运行模拟方法,充分发挥了QSS方法在大量离散事件处理中的效率优势,实现了大量电动汽车充电接入场景下的快速、准确运行模拟;通过事件表的形式协调电动汽车充电行为模拟与配电网潮流计算的联合求解过程,实现了大量电动汽车与配电网的整体运行模拟和互动分析。最后,采用典型算例验证了提出方法的速度、精度和适用能力。The broad integration of electric vehicles(EVs)dramatically changes the demand characteristics of distribution networks,which requires effective simulation methods to support the applications such as the operation analysis and the flexible interactions between the EVs and the networks.The EVs have discretized characteristics in their access,exit,and charging power changes.With the rapid increase of the EV access,the efficiency of the traditional time-domain operation simulation will drop significantly.This paper proposes a new method of simulation based on the quantized state system(QSS)theory for distribution networks with EVs integrated,which employs the efficiency advantage of the QSS in the simulation with massive discretized events,realizing the fast and accurate operation simulation in distribution networks with large-scale EVs integration.An event table is utilized to coordinate the joint solution process of the EVs charging behavior simulation and the distribution network power flow calculation,which realizes the overall operation simulation and the interactive analysis of distribution networks with massive EVs.Finally,a typical case study is used to verify the proposed method in the aspects of speed,accuracy,and applicability.

关 键 词：配电网 电动汽车 量子化状态系统 运行模拟 

分 类 号：TM721[电气工程—电力系统及自动化]