Capacity configuration method of flywheel energy storage system considering power characteristics of generation-energy storage-load

被引：0

作者：

Wang Y. ^{[1
]}

Wang C. ^{[1
]}

Xue H. ^{[1
]}

Xu W. ^{[1
]}

机构：

[1] College of Electrical Engineering, Shanghai University of Electric Power, Shanghai

来源：

Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2020年 / 40卷 / 01期

关键词：

Bus voltage; Capacity configuration; DC fast charging station; Electric vehicles; Flywheel energy storage system; Mechanical angular velocity; Power characteristics; Ramp rate of grid power; Rotational inertia;

D O I：

10.16081/j.epae.201912005

中图分类号：

学科分类号：

摘要：

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 cons-traints 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. © 2020, Electric Power Automation Equipment Press. All right reserved.

引用

页码：119 / 124and132

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