Calculation of remote short circuit fault currents for DC railways

Brown, Judith C.; Allan, J.; Mellitt, B.

doi:10.1049/ip-b.1992.0034

Cited by 25 publications

(17 citation statements)

References 7 publications

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“…The feed is separated by articulated neutral section insulator. [1] , J H He [1] ,J Hu [1] ,Z Q Bo [2] , M X Li [1] , T Yip [2] , A Klimek [2] [1] Beijing Jiaotong University, China [2] AREVA T&D Automation, UK A 978-1-4244-6551-4/10/$26.00 ©2010 IEEE…”

Section: DC System Configurationmentioning

confidence: 99%

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Accurate track modeling for fault current on DC railways based on MATLAB/Simulink

et al. 2010

IEEE PES General Meeting

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Section: DC System Configurationmentioning

confidence: 99%

“…C. S. Chang uses MATLAB/Simulink to build model. the model includes the DC substation, but not include the most important character of short-circuit current: skin effect [1].…”

mentioning

confidence: 99%

Accurate track modeling for fault current on DC railways based on MATLAB/Simulink

et al. 2010

IEEE PES General Meeting

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“…However this duration is less than the time setting of protection return ( re T Δ ), therefore, a trip decision is made. (4) In the course of the current rises, dt di / is reduce to below the setting level with a duration of more than re T Δ , therefore protection will return. …”

Section: B Current Increment Protectionmentioning

confidence: 99%

Simulation and algorithm development of protection scheme in DC traction system

Bo³

et al. 2009

2009 IEEE Bucharest PowerTech

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This paper presents a simulation model of DC traction system which is based on bilateral power supply mode. The model of two substation rectifiers in one track section has been proposed which is according to practical situation. The modeling was conducted with respect to the variations of the starting-up process and short circuit conditions. By comparing and investigating the simulation results of short circuit current and the train starting current, more effective algorithms such as DDL protection has been proposed. The paper presents the principle and analysis of DDL protection scheme, which shows effectiveness of DDL protection for fault detection and discrimination against train starting currents in the DC transit system.

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“…Actual remote short-circuit currents were recorded on the London Docklands Light Rail system [4]. The rising portion of each recording was divided into segments and curve-fitted for calculating the equivalent time constants using the following equation [4]: The feature-extraction process is introduced to enhance the difference in the DC surge profile between the normal starting and DC-link fault cases.…”

Section: Remote Short-circuit Currentmentioning

confidence: 99%

A new DC feeder protection based on wavelet transform

Bo³

et al. 2009

2009 IEEE Bucharest PowerTech

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This paper presents a new DC feeder protection based on wavelet transform. The model of two substation rectifiers in one track section has been proposed which is according to practical situation. The remote short-circuit current is determined mainly by the steel rail impedance, which is time varying due to the skin effect. In contrast, impedances of the traction motor and the contact wires, and the change of operating mode during starting govern the train starting current. The wavelet transform identifies these salient features. The remote short-circuit current and train starting current are simulated using SIMULlNK. The modeling was conducted with respect to the variations of the starting-up process and short circuit conditions. By comparing and investigating the simulation results of short circuit current and the train starting current, more effective algorithms such as wavelet transform has been proposed.

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Calculation of remote short circuit fault currents for DC railways

Cited by 25 publications

References 7 publications

Accurate track modeling for fault current on DC railways based on MATLAB/Simulink

Accurate track modeling for fault current on DC railways based on MATLAB/Simulink

Simulation and algorithm development of protection scheme in DC traction system

A new DC feeder protection based on wavelet transform

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