Research on Flywheel Energy Storage Technology for Electrified Railway

被引：0

作者：

Li Q. ^{[1
]}

Wang X. ^{[1
]}

Huang X. ^{[1
]}

Zhao Y. ^{[1
]}

Liu Y. ^{[1
]}

Zhao S. ^{[2
]}

机构：

[1] School of Electrical Engineering, Southwest Jiaotong University, Chengdu, 610031, Sichuan

[2] Kinetuc Traction Systems, Tangshan, 063000, Hebei

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2019年 / 39卷 / 07期

关键词：

Charge and discharge threshold; Energy management strategy; Flywheel energy storage; Peak load shifting; Traction load power statistics;

D O I：

10.13334/j.0258-8013.pcsee.180919

中图分类号：

学科分类号：

摘要：

Electrified railway belongs to a large industrial user. The peak power of traction load not only causes the power quality problems mainly caused by negative sequence, but also directly affects the users' benefit in economy. According to the characteristics of the peak and valley of the traction load, the control strategy and energy management strategy of flywheel energy storage device converter were analyzed, and an energy management strategy based on traction load power to control flywheel charging and discharging was proposed. Combined with the characteristics of electrified railway operation diagram that is characterized by a fixed period of days, based on the historical data, this paper further proposed the use of the statistical value of traction load to select the threshold of charge and discharge control, and maked a case analysis of the threshold determined under this method. Finally, simulation and physical verification were carried out. The results show that the basic capacity of the traction transformer can be reduced by the addition of the flywheel energy storage device. At the same time, the negative sequence current and the voltage imbalance can be reduced and the power quality of the power grid side can be improved. © 2019 Chin. Soc. for Elec. Eng.

引用

页码：2025 / 2032

页数：7

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