Analysis of Rail Potential and Stray Current for Taipei Metro

Chen, Shilin; Hsu, Sheng-Yu; Tseng, Chin-Tien; Yan, Kun-Hong; Chou, Huang-Yu; Too, Tong-Ming

doi:10.1109/tvt.2005.861164

Cited by 62 publications

(23 citation statements)

References 7 publications

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“…is consistent with that in (11). The complicated operation modes of train and traction substation can be unified by the submatrix (11)∼ (14), and the flow calculation can be efficient.…”

Section: Model Description a Huge Number Of Nodes Exist In The Modelsupporting

confidence: 69%

“…Furthermore, different grounding schemes of the DC mass transit system, including ungrounded, solidly grounded, and diode-grounded, have an influence on the rail potential and stray current [2,3,9]. In Taipei rapid transit systems, the impedance bond between Blue and Red-Green line is proved to be a cause of high rail potential and stray current [10,11]. Moreover, the researches show that running modes of train have an impact on rail potential and stray current [12].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Over Zone Feeding on Rail Potential and Stray Current in DC Mass Transit System

Wang

Liu

et al. 2016

Mathematical Problems in Engineering

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DC traction power system with running rails as reflux conductor has been adopted in Guangzhou Metro Line 8. During the operation of the Guangzhou Metro Line, a high rail potential has been observed, and the leakage of stray current increases significantly. Because of the electrical connectivity of the catenary, over zone feeding of traction current may exist when multiple trains run in multiple traction substations. Guangzhou Metro Line 8 suspects that over zone feeding of traction current is the major cause of the high rail potential. In this paper, a unified chain model of DC traction power system is proposed to simulate the distribution of rail potential and stray current. Field tests and simulations have been carried out to study whether over zone feeding has an impact on rail potential and stray current. Results show that over zone feeding widely exists in DC traction power system and that the rail potential and stray current can be reduced effectively by preventing the over zone feeding of traction current.

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“…is consistent with that in (11). The complicated operation modes of train and traction substation can be unified by the submatrix (11)∼ (14), and the flow calculation can be efficient.…”

Section: Model Description a Huge Number Of Nodes Exist In The Modelsupporting

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Effect of Over Zone Feeding on Rail Potential and Stray Current in DC Mass Transit System

Wang

Liu

et al. 2016

Mathematical Problems in Engineering

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show abstract

“…Earthing is one of the key factors in a dc power networks which highly influence the transient fault current, over-voltage and the protection settings of the system [25]. Carefully designed earthing configuration helps in detecting the ground fault, minimizes the stray currents and provides safety to personnel and equipment [52][53][54][55].For LV DC power system, earthing schemes can be categorized into the following types, that is, a) Unearthed System, b) Resistance earthed system and, c) Solidly earthed system.…”

Section: Earthing Configurationsmentioning

confidence: 99%

System Configuration, Fault Detection, Location, Isolation and Restoration: A Review on LVDC Microgrid Protections

et al. 2019

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Low voltage direct current (LVDC) distribution has gained the significant interest of research due to the advancements in power conversion technologies. However, the use of converters has given rise to several technical issues regarding their protections and controls of such devices under faulty conditions. Post-fault behaviour of converter-fed LVDC system involves both active converter control and passive circuit transient of similar time scale, which makes the protection for LVDC distribution significantly different and more challenging than low voltage AC. These protection and operational issues have handicapped the practical applications of DC distribution. This paper presents state-of-the-art protection schemes developed for DC Microgrids. With a close look at practical limitations such as the dependency on modelling accuracy, requirement on communications and so forth, a comprehensive evaluation is carried out on those system approaches in terms of system configurations， fault detection, location, isolation and restoration.

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“…The grounding scheme in a DC power system is a very important issue that highly affect both the transient short circuit current and overvoltage of the system, and also its fault detection and protection capabilities [159], [160], [177]. The grounding configuration of DC power systems can be divided into three types, which are the ungrounded system, resistance grounded system and solidly grounded system in middle point.…”

Section: Grounding Scheme Of DC Power Systemmentioning

confidence: 99%

“…Moreover, choosing the appropriate grounding scheme is an important issue that involves many aspects of the power system, such as the reliability of the system, personal safety, transient overvoltage and insulation coordination of the system [159]- [160].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Energy Storage Implementation in DC and AC Power System for Efficiency, Power Quality and Reliability Improvements

Farhadi¹

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Analysis of Rail Potential and Stray Current for Taipei Metro

Cited by 62 publications

References 7 publications

Effect of Over Zone Feeding on Rail Potential and Stray Current in DC Mass Transit System

Effect of Over Zone Feeding on Rail Potential and Stray Current in DC Mass Transit System

System Configuration, Fault Detection, Location, Isolation and Restoration: A Review on LVDC Microgrid Protections

Hybrid Energy Storage Implementation in DC and AC Power System for Efficiency, Power Quality and Reliability Improvements

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