A Review on Low Frequency Voltage Fluctuation Analysis and Mitigation for Vehicle-grid Systems with Integrated PV and Energy Storage Using Railway Power Conditioners
- Power Capacitor & Reactive Power Compensation Vol. 46, Issue 5, Pages: 16-27(2025)
- 作者机构：
- 作者简介：
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DOI：10.14044/j.1674-1757.pcrpc.2025.05.002
CLC：Received：20 January 2025，
Published：25 October 2025
- 稿件说明：
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CAI Jin, WANG Ying, CHEN Xiaoqiang, et al. A Review on Low Frequency Voltage Fluctuation Analysis and Mitigation for Vehicle-grid Systems with Integrated PV and Energy Storage Using Railway Power Conditioners[J]. Power Capacitor & Reactive Power Compensation, 2025, 46(5): 16-27.
CAI Jin, WANG Ying, CHEN Xiaoqiang, et al. A Review on Low Frequency Voltage Fluctuation Analysis and Mitigation for Vehicle-grid Systems with Integrated PV and Energy Storage Using Railway Power Conditioners[J]. Power Capacitor & Reactive Power Compensation, 2025, 46(5): 16-27. DOI： 10.14044/j.1674-1757.pcrpc.2025.05.002.
摘要
随着能源交通互联与“双碳”目标推进，构建以新能源为主体的新型电气化铁路牵引供电系统势在必行。然而，高比例新能源的接入存在电力电子设备的广泛使用，尤其是光伏、储能并网情况下，基于机电耦合，光储功率波动影响电压、频率稳定性，加剧电网振荡，造成列车失稳运行。由于光储自身不确定性，导致系统动态行为复杂化，从而引发车网系统中的低频振荡现象。在抑制措施中，存在不同策略的切换，长期运维成本高、参数匹配难等问题。根据控制策略，稳定性判据可预警振荡风险，但关于准确性与普适性仍有待研究。为深入综述该问题，从电气化铁路牵引供电系统参数设计、优化控制和稳定性判据三个角度，分析光伏，储能并入车网耦合系统对低频振荡的本质影响因素。针对低频振荡现象，阐明其产生机理及分析方法，并在新型电气化铁路“光储-车网”的架构下，研究低频振荡抑制方法及稳定性判据的适用性。最后，针对低频振荡影响因素，对最新研究成果进行总结与展望，以期为未来的研究提供参考和指导。
Abstract
With the advancement of energy and transportation interconnection and the implementation of the
dual Carbon
goals，it is imperative to develop a new type of electrified railway traction power supply system dominated by new energy sources. However，the integration of high proportion of renewable energy involves the extensive use of power electronic devices，particularly in grid-connected photovoltaic and energy storage system. Due to the electromechanical coupling，power fluctuations from photovoltaics and energy storage affect voltage and frequency stability，exacerbate grid oscillations，and lead to unstable train operation.The inherent uncertainty of the PV leads to the dynamic behavior of the system more complex，causing lowfrequency oscillation in the vehicle network system. In the suppression measures，such issues as switching of different strategies，high long-term operation and maintenance costs and difficult parameter matching are existed. According to the control strategy，the stability criterion can warn the oscillation risk，but the accuracy and universality still need to be studied. In order to provide an in-depth review of this issue，this paper analyzes the essential influencing factors of photovoltaic and energy storge intrgration into vehiclegrid coupling system on low-frequency osillations from such three perspectives as parameter design，optimal control and stability criterion of electrified railway traction power supply system. In view of the low-frequency oscillation phenomenon，its generation mechanism and analysis method are elucidated，and the applicability of the low-frequency oscillation suppression method and stability criterion are studied in the new electrified railroad“PV storage-vehicle network”architecture. Finally，the latest research results are summarized and prospected with respect to the influencing factors of low-frequency oscillations，so to provide reference and guidance for future research.
关键词
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references
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