Extended Black-Box Model of Pantograph-Catenary Detachment Arc Considering Pantograph-Catenary Dynamics in Electrified Railway

Liu, Zhigang; Zhou, Huiyang; Ke, Huang; Song, Ye‐Qiong; Zheng, Zongsheng; Cheng, Yu‐Shan

doi:10.1109/tia.2018.2870376

Cited by 16 publications

(20 citation statements)

References 20 publications

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“…The total transient time t = 0.1 s, the solving step h = 10 µs, and the total sampling points N = 1 × 10 7 are set. In addition, the PH arc is equivalent by the Habedank black-box arc model based on the researches [23], [24]. As displayed in Fig.…”

Section: Solution Methodsmentioning

confidence: 99%

Research on Electromagnetic Transient Processes of Long Marshalling High-Speed Train Passing Articulated Split-Phase Region

Liu

2019

IEEE Access

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When a long marshaling high-speed train (HST) with two raised pantographs passes an articulated split-phase region, there will be eight electromagnetic transient processes along with pantograph arcing. These transients cause over-voltage in the train body (TB), which can have a negative effect on the train's electronic equipment. In view of this issue, this paper closely analyzes the different transient processes generated by an HST passing a split-phase region. The analysis focuses on identifying the root causes and influencing factors relating to each transient process, examining, in particular, the capacitive coupling between TB and overhead contact system and the capacitive coupling between TB and the neutral wire. The results of this analysis are then used to establish Bergeron mathematical models that can be used to derive and study the eight independent transient processes. This leads to the generation of more detailed models that can be used to accurately simulate the phenomenon according to different variables, such as the phase difference of feeders, with Electromagnetic Transients Program (EMTP) software. The analysis results demonstrate that the hazardous PH over-voltages and TB over-voltages are easily generated. This paper concludes by drawing upon the simulation results to discuss possible over-voltage suppression measures, such as phase and grounding optimization for the pantograph and TB.INDEX TERMS Long marshalling high-speed train (HST), train body (TB) over-voltages, articulated split-phase region, capacitive coupling, Bergeron mathematical models, Electromagnetic Transients Program (EMTP) software, phase optimization, grounding optimization.

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Section: Solution Methodsmentioning

confidence: 99%

Research on Electromagnetic Transient Processes of Long Marshalling High-Speed Train Passing Articulated Split-Phase Region

Liu

2019

IEEE Access

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“…where, h is Planck's constant, v denotes the UV frequency, N 1 is the number of photons incident at the cathode, N 2 is the number of electrons out the elementary charge, q represents photogenic charge, E R is the incident light energy received by PMT, e is the elementary charge. According to (1) and (2), it can be obtained that,…”

Section: B Principle Of Pmt Arcing Detectionmentioning

confidence: 99%

“…During train operation, the pantograph and contact line may be offline due to the longitudinal vibration caused by the vehicle body vibration, irregularity of wheels and rail, hard point and other factors. The air gap between the pantograph and contact line is easily broken down by high voltage in the moment offline, and resulting in pantograph arc [2]. The hazards caused by pantograph arc include threatening the insulation safety of vehicle body equipment [3], making the train receiving current continuously, leading to the unstable running speed of the train [4], generating high-frequency noise, causing certain interference to the communication equipment and communication signal control system along the line [5], generating harmonics injected into the traction power supply network system, reducing the power supply quality [6], ablating the contact line, or even burning the contact wire and causes an accident [7]- [9].…”

Section: Introductionmentioning

confidence: 99%

Pantograph Arc Detection of Urban Rail Based on Photoelectric Conversion Mechanism

2020

IEEE Access

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According to the solar-blind characteristic of the pantograph arc spectrum distribution, an arc detection method based on the photoelectric conversion mechanism for urban rail was proposed, and the design of each part of the arcing detection system was completed. Through the analysis of arc spectral distribution, the 275-285 nm band was determined as the detection characteristic waveband. The optical acquisition system located on the roof of the train collects the arc characteristic light and transmits it to the photoelectric conversion module, which converts the received optical signal into the corresponding current signal linearly. After amplification, comparison and screening in this module, the optical signal is sent to the data processing module for output display. Finally, a field test conducted on an urban rail transit line shows that this arc detection system can effectively detect the pantograph arc phenomenon and reflect the arc intensity linearly avoiding the influence from natural light, train load and train running direction. INDEX TERMS Urban rail, pantograph arc, photoelectric conversion, arcing detection.

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“…Considering the influence of the pantograph/catenary detachment process on the train system, an effective extended black-box model of pantograph arcing is proposed in [9] by introducing a dynamic pantograph and the overhead line detachment trajectory model. Another resistive arc model is proposed for investigating the interaction between the arc and the remaining part of the electronic circuit [10].…”

Section: Description Of the Traction Systemmentioning

confidence: 99%

“…Numerical simulation is used to analyze the dynamic characteristics of pantograph arcing, for example, Gao and Hao [7,8] presented the mechanism of how heat dissipation and gas flow field influence the plasma behavior of arcing. Considering the influence of the pantograph/catenary detachment process on the train system, an effective extended black-box model of pantograph arcing is proposed in [9] by introducing a dynamic pantograph and the overhead line detachment trajectory model. Another resistive arc model is proposed for investigating the interaction between the arc and the remaining part of the electronic circuit [10].…”

Section: Introductionmentioning

confidence: 99%

A Supercapacitor-Based Method to Mitigate Overvoltage and Recycle the Energy of Pantograph Arcing in the High Speed Railway

Xu¹,

Chen²,

Cheng³

et al. 2019

Energies

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The pantograph arcing phenomenon may shorten the service life of a pantograph and even destroy onboard devices and instruments, due to the irregular motions of the train and the intermittent line–pantograph disconnection. This paper points out that abrupt inductive energy from the magnetizing inductance of the traction transformer can lead to an electromagnetic transient process with unexpected overvoltage across it. Further, a supercapacitor-based power electronic system is proposed, which can not only redirect the inductive energy to the supercapacitor pack through bidirectional converters but also mitigate the overvoltage across the main electrical equipment when pantograph arcing occurs. Simulation results show the overvoltage could be reduced and the energy stored in the supercapacitor which could also be used to provide energy for sensors or other devices.

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Extended Black-Box Model of Pantograph-Catenary Detachment Arc Considering Pantograph-Catenary Dynamics in Electrified Railway

Cited by 16 publications

References 20 publications

Research on Electromagnetic Transient Processes of Long Marshalling High-Speed Train Passing Articulated Split-Phase Region

Research on Electromagnetic Transient Processes of Long Marshalling High-Speed Train Passing Articulated Split-Phase Region

Pantograph Arc Detection of Urban Rail Based on Photoelectric Conversion Mechanism

A Supercapacitor-Based Method to Mitigate Overvoltage and Recycle the Energy of Pantograph Arcing in the High Speed Railway

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