Communication-less Management Strategy for Electric Vehicle Charging in Droop-controlled Islanded Microgrids  

作　　者：Abdullah Azhar Al-Obaidi Mohammed Zaki El-Sharafy Hany E.Z.Farag Saifullah Shafiq Ali Al-Awami 

机构地区：[1]Independent Electricity System Operator(IESO),Mississauga,Canada [2]Department of Electrical Engineering and Computer Science,York University,Toronto,Canada [3]University of Queensland,StLucia QLD 4067,Australia [4]Department of Electrical Engineering,King Fahd University of Petroleum&Minerals,Dhahran,Saudi Arabia

出　　处：《Journal of Modern Power Systems and Clean Energy》2024年第4期1227-1238,共12页现代电力系统与清洁能源学报（英文）

基　　金：supported by the Natural Sciences and Engineering Research Council(NSERC)of Canada and Early Researcher Award,Ontario Government,Canada.

摘　　要：Adopting high penetration levels of electric vehicles(EVs) necessitates the implementation of appropriate charging management systems to mitigate their negative impacts on power distribution networks. Currently, most of the proposed EV charging management techniques rely on the availability of high-bandwidth communication links. Such techniques are far from realization due to(1) the lack of utility-grade communication systems in many cases such as secondary(low-voltage) power distribution systems to which EVs are connected, rural areas, remote communities, and islands, and(2) existing fears and concerns about the data privacy of EV users and cyber-physical security. For these cases, appropriate local control schemes are needed to ensure the adequate management of EV charging without violating the grid operation requirements. Accordingly, this paper introduces a new communication-less management strategy for EV charging in droop-controlled islanded microgrids. The proposed strategy is autonomous, as it is based on the measurement of system frequency and local bus voltages. The proposed strategy implements a social charging fairness policy during periods when the microgrid distributed generators(DGs) are in short supply by allocating more system capacity to the EVs with less charging in the past. Furthermore, a novel communication-less EV load shedding scheme is incorporated into the management strategy to provide relief to the microgrid during events of severe undervoltage or underfrequency occurrences due to factors such as high loading or DG outages. Numerical simulations demonstrate the superiority of the proposed strategy over the state-of-the-art controllers in modulating the EV charging demand to counteract microgrid instability.

关 键 词：CHARGING battery management communication-less control droop control electric vehicle islanded microgrid 

分 类 号：TM73[电气工程—电力系统及自动化] U491.8[交通运输工程—交通运输规划与管理]