| 引用本文: | 王育飞,王成龙,薛花,徐文法.计及源-储-荷功率特性的飞轮储能系统容量配置方法[J].电力自动化设备,2020,40(1): |
| WANG Yufei,WANG Chenglong,XUE Hua,XU Wenfa.Capacity configuration method of flywheel energy storage system considering power characteristics of generation-energy storage-load[J].Electric Power Automation Equipment,2020,40(1): |
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| 摘要: |
| 在电动汽车直流快充站的应用场景下，以限制电网功率爬坡率并补偿母线电压跌落为目标，提出计及源-储-荷功率特性的飞轮储能系统容量配置方法。首先，根据源-储-荷的功率关系得到飞轮机械角速度增量与母线电压跌落幅值之比近似为时间的函数；根据快充站内电网侧变流器的功率特性，推导得到电网最大功率爬坡率与母线电压最大跌落幅度之间近似呈正比关系。然后，针对额定功率不同的快速充电负荷，在满足直流母线电压等级与永磁同步电机电磁约束条件的基础上，重点探讨飞轮转子转动惯量与初始机械角速度的设定，并且分析了飞轮侧储能变流器的容量约束条件。最后，在MATLAB/Simulink中搭建系统的仿真模型，验证所提飞轮储能系统容量配置方法的正确性。 |
| 关键词: 电动汽车 直流快充站 飞轮储能系统 电网功率爬坡率 母线电压 转动惯量 机械角速度 容量配置 功率特性 |
| DOI：10.16081/j.epae.201912005 |
| 分类号:TM73;TM910.6;U469.72 |
| 基金项目:上海市科技创新行动计划项目(19DZ2204700)；上海市科委地方能力建设计划项目(16020500900) |
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| Capacity configuration method of flywheel energy storage system considering power characteristics of generation-energy storage-load |
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WANG Yufei, WANG Chenglong, XUE Hua, XU Wenfa
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College of Electrical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
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| Abstract: |
| In the application scenario of DC fast charging station of electric vehicles, a capacity configuration method of flywheel energy storage system considering power characteristics of generation-energy storage-load is proposed to limit the ramp rate of grid power and compensate the bus voltage drop. Firstly, according to the power relationship of generation-energy storage-load, the ratio of the increment of flywheel’s mechanical angular velocity to the bus voltage sag amplitude is approximately a function of time. According to the power characteristics of grid-side converter in the fast charging station, it is deduced that the relationship between the maximum grid power ramp rate and the maximum sag amplitude of bus voltage is approximately proportional. Then, for the fast charging load with different rated power, the setting of the rotational inertia of flywheel rotor and the initial mechanical angular velocity is emphatically discussed, and the capacity constraints of the energy storage converter of the flywheel side are analyzed, on the basis of satisfying the DC bus voltage level and the electromagnetic constraint of permanent magnet synchronous motor. Finally, the system simulation model is built in MATLAB/Simulink to verify the correctness of the capacity configuration method of flywheel energy storage system. |
| Key words: electric vehicles DC fast charging station flywheel energy storage system ramp rate of grid power bus voltage rotational inertia mechanical angular velocity capacity configuration power characteristics |
