Low Frequency Stability of AC Railway Traction Power Systems: Analysis of the Influence of Traction Unit Parameters

被引：7
|
作者：
Frutos, Paul [1 ]
Ladoux, Philippe [2 ]
Roux, Nicolas [2 ]
Larrazabal, Igor [3 ]
Guerrero, Juan M. [1 ]
Briz, Fernando [1 ]
机构：
[1] Univ Oviedo, Dept Elect Comp & Syst Engn, Gijon 33204, Spain
[2] Univ Toulouse, UPS, INPT, CNRS,LAPLACE, F-31000 Toulouse, France
[3] Ingeteam Power Technol SA, Tract R&D, Zamudio 48170, Spain
来源：
ELECTRONICS | 2022年 / 11卷 / 10期
关键词：
low frequency stability; low frequency oscillations; railway traction system; traction power supply; nyquist stability criteria; input admittance; resonant stability; TRAIN-NETWORK INTERACTIONS; SINGLE-PHASE SYSTEM; PART;
D O I：
10.3390/electronics11101593
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Dynamic interactions between AC railway electrification systems and traction unit power converters can result in low frequency oscillation (LFO) of the contact-line voltage amplitude, which can lead to a power outage of the traction substation and the shutdown of train traffic. Several system parameters can influence the low frequency stability of the railway traction power system, including contact-line length and traction unit parameters such as transformer leakage inductance, DC-link capacitance, control bandwidths and synchronization systems. This paper focuses on the influence of these parameters on the LFO. The methodology is based on a frequency-domain analysis. Nyquist and Bode diagrams are used to determine the stability limit. The validation of the method is performed through the use of time-domain simulations.
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收藏
页数：25
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