An Active Oscillation Compensation Method to Mitigate High-Frequency Harmonic Instability and Low-Frequency Oscillation in Railway Traction Power Supply System
This paper investigates the high-frequency harmonic instability (HHI) and low-frequency oscillation (LFO) phenomena in high-speed railways, and proposes an active oscillation compensation method to mitigate these HHI and LFO. Such mitigation method introduces the input voltage oscillating components...
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2018-01-01
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doaj-d2557309361048f89bccc85f671cd8122021-03-29T21:34:27ZengIEEEIEEE Access2169-35362018-01-016703597036710.1109/ACCESS.2018.28790548519732An Active Oscillation Compensation Method to Mitigate High-Frequency Harmonic Instability and Low-Frequency Oscillation in Railway Traction Power Supply SystemXinyu Zhang0https://orcid.org/0000-0003-4048-1358Jie Chen1Gang Zhang2Lei Wang3Ruichang Qiu4Zhigang Liu5Beijing Jiaotong University, Beijing, ChinaBeijing Jiaotong University, Beijing, ChinaBeijing Jiaotong University, Beijing, ChinaBeijing Jiaotong University, Beijing, ChinaBeijing Jiaotong University, Beijing, ChinaBeijing Jiaotong University, Beijing, ChinaThis paper investigates the high-frequency harmonic instability (HHI) and low-frequency oscillation (LFO) phenomena in high-speed railways, and proposes an active oscillation compensation method to mitigate these HHI and LFO. Such mitigation method introduces the input voltage oscillating components of grid side to the control loop of the grid-side converter, which helps to mitigate the voltage oscillation variables and restore the steady state of the train and traction network (simplified as “train-network”) system. From the perspective of train-network impedance, this paper proposes the train impedance models with and without the mitigation process. The generalized Nyquist analysis method is used to analyze the stability of the system with and without the mitigation. Finally, the mitigation method is verified by simulated and experimental data, to be capable of suppressing both HHI and LFO effectively.https://ieeexplore.ieee.org/document/8519732/Active oscillation compensationhigh-frequency harmonic instabilitylow-frequency oscillationtrain-network power supply system |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xinyu Zhang Jie Chen Gang Zhang Lei Wang Ruichang Qiu Zhigang Liu |
spellingShingle |
Xinyu Zhang Jie Chen Gang Zhang Lei Wang Ruichang Qiu Zhigang Liu An Active Oscillation Compensation Method to Mitigate High-Frequency Harmonic Instability and Low-Frequency Oscillation in Railway Traction Power Supply System IEEE Access Active oscillation compensation high-frequency harmonic instability low-frequency oscillation train-network power supply system |
author_facet |
Xinyu Zhang Jie Chen Gang Zhang Lei Wang Ruichang Qiu Zhigang Liu |
author_sort |
Xinyu Zhang |
title |
An Active Oscillation Compensation Method to Mitigate High-Frequency Harmonic Instability and Low-Frequency Oscillation in Railway Traction Power Supply System |
title_short |
An Active Oscillation Compensation Method to Mitigate High-Frequency Harmonic Instability and Low-Frequency Oscillation in Railway Traction Power Supply System |
title_full |
An Active Oscillation Compensation Method to Mitigate High-Frequency Harmonic Instability and Low-Frequency Oscillation in Railway Traction Power Supply System |
title_fullStr |
An Active Oscillation Compensation Method to Mitigate High-Frequency Harmonic Instability and Low-Frequency Oscillation in Railway Traction Power Supply System |
title_full_unstemmed |
An Active Oscillation Compensation Method to Mitigate High-Frequency Harmonic Instability and Low-Frequency Oscillation in Railway Traction Power Supply System |
title_sort |
active oscillation compensation method to mitigate high-frequency harmonic instability and low-frequency oscillation in railway traction power supply system |
publisher |
IEEE |
series |
IEEE Access |
issn |
2169-3536 |
publishDate |
2018-01-01 |
description |
This paper investigates the high-frequency harmonic instability (HHI) and low-frequency oscillation (LFO) phenomena in high-speed railways, and proposes an active oscillation compensation method to mitigate these HHI and LFO. Such mitigation method introduces the input voltage oscillating components of grid side to the control loop of the grid-side converter, which helps to mitigate the voltage oscillation variables and restore the steady state of the train and traction network (simplified as “train-network”) system. From the perspective of train-network impedance, this paper proposes the train impedance models with and without the mitigation process. The generalized Nyquist analysis method is used to analyze the stability of the system with and without the mitigation. Finally, the mitigation method is verified by simulated and experimental data, to be capable of suppressing both HHI and LFO effectively. |
topic |
Active oscillation compensation high-frequency harmonic instability low-frequency oscillation train-network power supply system |
url |
https://ieeexplore.ieee.org/document/8519732/ |
work_keys_str_mv |
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