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基于SOC的电动汽车参与电网调频控制策略研究
李宏玉1, 佘超1, 张廷军2, 落文斌1
1.东北石油大学 电气信息工程学院电工理论与新技术实验室, 黑龙江 大庆 163318;2.广西科技大学 电气与信息工程学院, 广西 柳州 545006
摘要:
大量电动汽车序接入电网会给电力系统安全稳定运行带来危害。利用汽车入网技术,电动汽车接入电网参与系统调频,但用户出行需求、电池损耗会受到影响。基于此,首先分析了电动汽车动力电池特性,建立了电动汽车参与系统调频模型,通过分析电动汽车动力电池荷电状态概率密度分布,提出考虑电池荷电状态的电动汽车参与系统调频控制策略。最后,模拟了以平抑电网频率波动为目标的电动汽车充放电场景,根据电池荷电状态,基于所提控制策略通Matlab/Simulink仿真,验证了电动汽车参与系统调频实际效果。
关键词:  电动汽车  电池  荷电状态  频率波动  电力系统调频
DOI:10.11835/j.issn.1000-582X.2018.12.008
分类号:TM761
基金项目:国家自然科学基金资助项目(51774088);中国石油科技创新基金资助项目(2016D-5007-0201)。
Research on the strategy of electric vehicles participating in power system frequency control based on SOC
LI Hongyu1, SHE Chao1, ZHANG Tingjun2, LUO Wenbin1
1.Electrical Theory and New Technology Laboratory, School of Electrial Engineering & Information, Northeast Petroleum University, Daqing 163318, Heilongjiang, P. R. China;2.School of Electrical & Information Engineering, Guangxi University of Science and Technology, Liuzhou 545006, P. R. China
Abstract:
A large number of unmanaged electric vehicles (EVs) connected to the power grid brings harm to the safety of the power system. By using the technology of V2G, EVs are connected to grid to participate in the system frequency modulation. However, the demand of batteries will be affected. In this research, by analyzing the distribution of probability density of EV battery state, the strategy of participating in system FM control considering battery state of charge was proposed. Based on the characterristics of battery of EVs, a model was built. The EV charging and discharging scenario, which aims at stability of the frequency fluctuation of the power grid, was simulated. According to the state of SOC of the battery, the simulation results based on the control strategy of Matlab/Simulink verify the actual effect of EV participating in the system frequency modulation.
Key words:  EV  battery  SOC  frequency fluctuation  power system FM
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