Study on the Performance of Integrated Grounding Line in High-Speed Railway

Wu, Guangning; Gao, Guoqiang; Dong, Anping; Zhou, Lijun; Cao, Xia; Wang, Wangang; Wang, Bo; Tang, Yuan; Chen, Jigang

doi:10.1109/tpwrd.2011.2117446

Cited by 27 publications

(12 citation statements)

References 14 publications

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“…Therefore, the steel impedances on viaduct roadbed are not unnecessarily considered. Here, using the rail (P65‐Type) in parallel with the integrated grounding wire in each feeder region, the topology parameters R r , L r , R rz , and L rz are, respectively, determined …”

Section: Modeling and Determination Parametersmentioning

confidence: 99%

“…Here, using the rail (P65-Type) in parallel with the integrated grounding wire in each feeder region, the topology parameters R r , L r , R rz , and L rz are, respectively, determined. 33 Through the described calculation processes aforementioned, the specific electrical lumped parameters on the upper part of viaduct are depicted in Table 1. 3.2 | Modeling and determination parameters of the lower part of viaduct roadbed…”

Section: Determination Parameters Of the Viaduct Roadbed Upper Modelmentioning

confidence: 99%

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Research on electromagnetic transient process in articulated split-phase insulator of high-speed railway considering viaduct's electrical coupling

Wang

Liu

et al. 2017

Int Trans Electr Energ Syst

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Summary In single‐phase alternating current (AC) traction power supply system, to balance 3‐phase load of power system, each phase of electricity is used in rotation. Based on the 7‐section articulated split‐phase insulator of China Beijing‐Tianjin high‐speed railway line, different electromagnetic transient processes are deeply analyzed considering pantograph arc and viaduct's electrical coupling in this paper. First, based on the lumped parameter model, the process of high‐speed train passing the articulated split‐phase region, concluding the upper viaduct part and the lower viaduct part, is deeply studied. Second, through state‐space technique, 4 independent electromagnetic transient processes in articulated split‐phase region of high‐speed railway are derived and analyzed thoroughly considering the impact of pantograph arc and viaduct. Finally, the integral transient process is accurately simulated and analyzed by ATP‐EMTP software under several circumstances, such as different topologies, initial phase and phase difference of feeders, and specific suppression overvoltage measures. The independent and integral comparison results illustrate that the coupled viaduct can lead to the more complex topologies and electromagnetic transient processes. Also, the coupled viaduct can play a significant topology discharge and pantograph overvoltage suppression role for the high‐speed train passing articulated split‐phase region.

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Section: Modeling and Determination Parametersmentioning

confidence: 99%

Section: Determination Parameters Of the Viaduct Roadbed Upper Modelmentioning

confidence: 99%

Research on electromagnetic transient process in articulated split-phase insulator of high-speed railway considering viaduct's electrical coupling

Wang

Liu

et al. 2017

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

show abstract

“…Over the past few years, China has invested a lot of manpower and material resources in the development and construction of high-speed railway, whose operation speed has been improved to 350 km/h in service [1]. To reduce the rail potential and use for common grounding of different electrical system as well as equipment, the concept and the technique of integrated grounding system (IGS) has been adopted in many countries' high-speed railway design and construction [1][2][3][4][5][6][7][8]. In China, IGS mainly consists of two long bare horizontal copper lines named run-through ground wire, which are buried under the cable grooves along the both sides of the railway in the roadbed section with a transversal connection every 500 m, while paved within the cable ducts on the bridge section and in the tunnel section.…”

Section: Introductionmentioning

confidence: 99%

Grounding impedance measurement method of integrated grounding system in high‐speed railway roadbed section

Zhang

Wang

Qi³

et al. 2015

IET Electrical Systems in Transportation

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Integrated grounding system (IGS) in china high-speed railway is formed through two long horizontal copper lines named run-through ground wire buried on both sides along the railway, which is also the longest horizontal grounding system in the world through the interconnection of railways. The grounding impedance measurement of IGS of high-speed railway is a novel, important problem to ensure the human and equipment safety. The placement approach of test electrodes for the grounding impedance measurement of the IGS in the roadbed section of high-speed railway was discussed by the simulation calculation and field test results in this study. Numerical analysis and measurement arrangement of IGS grounding impedance based on short-current lead wire was evaluated by analysing the soil structure, the distance of test electrodes and the ratio of measured grounding impedance and true grounding impedance. The test route was suggested that the potential electrode be placed on the opposite side with respect to the current electrode for measuring the grounding impedance. The suitable and convenient test electrode arrangement and the corresponding correction coefficients were obtained. Compared with the computer-aided calculation, the field test maintained acceptable measurement error. Thus, a useful measurement method was proposed for grounding impedance measurement of IGS.

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“…In order to reduce the potential difference and electromagnetic interference between each professional system, high-speed railway in China have adopted the integrated grounding system [1]- [4]. By laying the run-through ground wire along the two sides of railway, high-speed railway integrated grounding system fuses traction power supply return system, power service system, communication signal system, buildings, road bed, platform, bridges, tunnels, sound barrier and other electrical and electronic information system together, forming a huge-scale long-distance horizontal grounding system, which is the basic guarantee and important measure to maintain high speed railway safe and reliable operation, ensure operating personnel and electrical equipment safety.…”

Section: Introductionmentioning

confidence: 99%

Grounding Impedance Measurement of High Speed Railway Integrated Grounding System

Zhang¹,

Wang²,

Fan³

et al. 2015

JPEE

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The high-speed railway integrated grounding system is the basic guarantee for the safe and stable operation of the railway. It is the world's largest long-distance horizontally elongated joint grounding system, which stretches the length of hundreds to thousands of kilometers, and its structure is not only different from power station and substation grounding system, but also different from the transmission line tower, lightning rod and other small grounding devices. There is little research information on the grounding impedance of high-speed railway integrated grounding system. This paper adopted 0.618 compensation method and reverse away method respectively, measured a section of high-speed railway integrated grounding system grounding impedance by JD16 and CA6425. Measurement results are in good agreement using those two type instrument. By using 0.618 compensation method, the measurement result will be gradually converged at 0.3 Ω with the increasing of current electrode distance, which is the real grounding impedance of integrated grounding system. By using reverse away method, the maximum measurement result difference is less than 0.024 Ω with the lead of current electrode distance increasing. The measurement results will be rapidly converged 0.25 Ω. The results showed that the reverse away method is helpful to shorten the length of current electrode wiring. The measurement error will be small when the current electrode wiring is longer.

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Study on the Performance of Integrated Grounding Line in High-Speed Railway

Cited by 27 publications

References 14 publications

Research on electromagnetic transient process in articulated split-phase insulator of high-speed railway considering viaduct's electrical coupling

Research on electromagnetic transient process in articulated split-phase insulator of high-speed railway considering viaduct's electrical coupling

Grounding impedance measurement method of integrated grounding system in high‐speed railway roadbed section

Grounding Impedance Measurement of High Speed Railway Integrated Grounding System

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