Resonance influence factors analysis of high-speed railway traction power supply system based on RT - LAB

Liu, Shihui; Lin, Fei; Cao, Huabao; Liu, Yuping; Han, Kun

doi:10.1109/itec-ap.2017.8080773

Cited by 4 publications

(4 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For one electric railway, the frequencies of the harmonic resonance accidents occurring at different time are the same according to the theoretical analysis and the field test data [28,29]. On the other hand, the simulation result also validates the on-site test of this device [30].…”

Section: Measurement Results Of Frequency-dependent Impedancementioning

confidence: 54%

Measurement of Impedance-Frequency Property of Traction Network Using Cascaded H-Bridge Converters: Device Design and On-Site Test

Wang

Liu

et al. 2020

IEEE Trans. Energy Convers.

View full text Add to dashboard Cite

To investigate the harmonic resonance in electric railways, determination of the traction network impedance using a utility instrument is an important and challenging task. This paper presents a novel industrial test device which can directly measure the impedance of the actual traction network which is the power source of the railway. The structure arrangement and the parameter design are accomplished to meet the requirements for high-voltage level and strong anti-electromagnetic interference capability. Following this, frequency-dependent impedance measurement is implemented through the injection of controlled harmonic currents using the cascaded H-bridge converters. Furthermore, the power flow analysis is carried out to demonstrate that this device does not need any additional power source and can generate harmonic power. In a new-built railway, this device has been adopted to conduct the on-site test of the traction network impedance. Then, the multi-conductor simulation model is established for the purpose of mutual verification between the field test result and simulation result. Furthermore, the on-site test results can be applied to determine the resonance frequency before a nenw-built line is put into use so that any harmonic resonance can be avoided by taking effective measures in advance.

show abstract

Section: Measurement Results Of Frequency-dependent Impedancementioning

confidence: 54%

Measurement of Impedance-Frequency Property of Traction Network Using Cascaded H-Bridge Converters: Device Design and On-Site Test

Wang

Liu

et al. 2020

IEEE Trans. Energy Convers.

View full text Add to dashboard Cite

show abstract

“…The traditional control method of traction converter [37] uses a double closed‐loop control strategy combining DC voltage outer loop and AC current inner loop, the DC voltage loop is used to control the stability of DC bus voltage and its output is used as the input of the current loop. In the case of multiple converters operating in parallel and the existence of multiple controllers, the CPS‐PWM [1–3, 5, 6] modulation strategy is often used, this method is implemented through a set of uniformly staggered carriers, carriers are usually initialised at the zero phase angle point of the grid voltage, the topology of the traditional control methods are shown in Figure 6. There are two common traditional control methods [38, 39], Figure 6a is a method based on direct current control (DCC), and Figure 6b is a method based on dq decoupling control (DQDC).…”

Section: Traditional Control Strategies and Problem Formulationmentioning

confidence: 99%

“…The TPSS is a complex multi-conductor transmission line with distributed inductance and capacitance, and a non-linear strong coupling relationship between the train and the network. Due to the action of the switching devices of the grid-side converter (four-quadrant converter, 4QC) of the locomotive, high-frequency harmonic currents with the same impedance characteristic frequency of the traction network may be generated, exciting high resonant overvoltage [1][2][3]6]. This high-frequency resonance phenomenon may lead to harmonic amplification, with the consequent problems of severe voltage distortion, overheating, vibration, noise, and losses in electrical equipment such as power capacitors and traction transformers, as well as incorrect operation of protective devices and electromagnetic interference (EMI) on track circuits and communication lines [4][5][6]19], which have serious implications for the safe and stable operation of trains.…”

Section: Introductionmentioning

confidence: 99%

High‐frequency harmonic suppression method for interleaved traction converters based on synchronous sampling

Gao

Chen

Huang

2022

IET Electric Power Appl

View full text Add to dashboard Cite

High‐frequency resonance in traction power supply systems (TPSSs) is of great concern because of its potential to cause great damage to the safety and stable operation of railroad systems; it has been demonstrated that when a locomotive generates a harmonic current with the resonant frequency of the series impedance on the traction network, a large amount of high‐frequency harmonic voltage is generated. This paper proposes a high‐frequency harmonic suppression method based on synchronous sampled carrier phase‐shift PWM modulation strategy (SSCPS‐PWM), which has the advantage of not only considering the consistency of sampling the analogue signal by multiple controllers, but also further optimising the precise synchronization between multiple converter pulses. This method generates lower high‐frequency harmonic content and is particularly suitable for the field of high‐power, low switching frequency, multi‐controller locomotive traction converters. The proposed method was simulated and compared with the traditional method for the harmonics injected by the locomotive, and a real railway line with a harsh power supply condition was selected and field tests were conducted in four sections by a 7200kW 6‐axle electric locomotive. The test results showed that the proposed method effectively reduced the high‐frequency harmonic current of the locomotive and reduced the high‐frequency resonant overvoltage in the TPSS.

show abstract

“…The harmonic spectra of the AC side current can be derived by applying the Fourier transform to the pulse width modulation (PWM) (Mouton et al, 2014;Kostic et al, 2013). Several inherent harmonic resonance frequencies exist according to the impedance-frequency characteristics of the traction network (Holtz and Kelin, 1989;Zhang et al, 2017;Qiujiang et al, 2018). The harmonic current generated by the VSC flows into the traction network through the point-of-commoncoupling (PCC) for the L-N system (Tan et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Analysis of Harmonic Resonance for Locomotive and Traction Network Interacted System Considering the Frequency-Domain Passivity Properties of the Digitally Controlled Converter

Liu

Zhai

et al. 2020

Front. Energy Res.

View full text Add to dashboard Cite

Resonance influence factors analysis of high-speed railway traction power supply system based on RT - LAB

Cited by 4 publications

References 12 publications

Measurement of Impedance-Frequency Property of Traction Network Using Cascaded H-Bridge Converters: Device Design and On-Site Test

Measurement of Impedance-Frequency Property of Traction Network Using Cascaded H-Bridge Converters: Device Design and On-Site Test

High‐frequency harmonic suppression method for interleaved traction converters based on synchronous sampling

Analysis of Harmonic Resonance for Locomotive and Traction Network Interacted System Considering the Frequency-Domain Passivity Properties of the Digitally Controlled Converter

Contact Info

Product

Resources

About