Operation-area-constrained Adaptive Primary Frequency Support Strategy for Electric Vehicle Clusters  

作　　者：Tianqi Liu Pengyu Wang Qiao Peng Min Zhang Tengxin Wang Jinhao Meng 

机构地区：[1]College of Electrical Engineering,Sichuan University,Chengdu 610065,China [2]Electric Power Research Institute,State Grid Shanxi Electric Power Company,Taiyuan 030001,China

出　　处：《Journal of Modern Power Systems and Clean Energy》2023年第6期1982-1994,共13页现代电力系统与清洁能源学报（英文）

基　　金：supported by the Science and Technology Project of State Grid Corporation of China (No.5100-202199274A-0-0-00)。

摘　　要：Due to their fast response and strong short-term power throughput capacity, electric vehicles(EVs) are promising for providing primary frequency support to power grids. However, due to the complicated charging demands of drivers, it is challenging to efficiently utilize the regulation capacity of EV clusters for providing stable primary frequency support to the power grid. Accordingly, this paper proposes an adaptive primary frequency support strategy for EV clusters constrained by the charging-behavior-defined operation area. First, the forced charging boundary of the EV is determined according to the driver's charging behavior, and based on this, the operation area is defined. This ensures full utilization of the available frequency support capacity of the EV. An adaptive primary frequency support strategy of EV clusters is then proposed. The output power of EV is adaptively regulated according to the real-time distance from the EV operating point to the forced charging boundary. With the proposed strategy, when the EV approaches the forced charging boundary, its output power is gradually reduced to zero. Then, the rapid state-of-charge declines of EVs and sudden output power reductions in EV clusters caused by forced charging to meet the driver's charging demands can be effectively avoided. EV clusters can then provide sustainable frequency support to the power grid without violating the driver's charging demands. Simulation results validate the proposed operation-area-constrained adaptive primary frequency support strategy, which outperforms the average strategy in terms of stable output maintenance and the optimal utilization of regulation capacities of EV clusters.

关 键 词：Primary frequency control frequency support electric vehicle vehicle-to-grid(V2G) operation area charging behavior 

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]