Lightning Transients of the Overhead Catenary System Pillar and its Adjacent Grounding Systems in a High-Speed Railway Depot

Su, Zhiguo; Yang, Jianzhi; Han, Congying; Xiang, Nianwen; Lyu, Weitao; Bai, Yingjie; Zhang, Wei

doi:10.1109/temc.2022.3144496

Cited by 3 publications

(1 citation statement)

References 27 publications

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“…2.3 Lightning's mechanism and spatial and temporal evolution of traction system and signal system China's high-speed railway is mostly erected by elevated way, and the viaduct actually acts as the grounding device of the contact network. Lightning strikes on the contact network cause lightning failure of the traction system and signal system (Su et al, 2022), which is the main reason for lightning affecting the safety of high-speed rail transportation. The current research on the lightning characteristics of HSR contact networks at home and abroad is based on two main ideas: one is to analyze the lightning strike rate and induced voltage of traction systems by drawing on the method of transmission line of power systems (Tlhabanyane and Gomes, 2021); the other is to establish the development mode of lightning pilots and study the lightning characteristics of the contact network and its influence on the system by analyzing the process of lightning and ground.…”

Section: Mechanism and Spatial And Temporal Evolution Of Heavy Rainfa...mentioning

confidence: 99%

Current status and prospects of research on safety situation awareness of high speed railway operation environment

Shi,

Wang,

You

et al. 2024

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PurposeThe safety of high-speed rail operation environments is an important guarantee for the safe operation of high-speed rail. The operating environment of the high-speed rail is complex, and the main factors affecting the safety of high-speed rail operating environment include meteorological disasters, perimeter intrusion and external environmental hazards. The purpose of the paper is to elaborate on the current research status and team research progress on the perception of safety situation in high-speed rail operation environment and to propose directions for further research in the future.Design/methodology/approachIn terms of the mechanism and spatio-temporal evolution law of the main influencing factors on the safety of high-speed rail operation environments, the research status is elaborated, and the latest research progress and achievements of the team are introduced. This paper elaborates on the research status and introduces the latest research progress and achievements of the team in terms of meteorological, perimeter and external environmental situation perception methods for high-speed rail operation.FindingsBased on the technical route of “situational awareness evaluation warning active control,” a technical system for monitoring the safety of high-speed train operation environments has been formed. Relevant theoretical and technical research and application have been carried out around the impact of meteorological disasters, perimeter intrusion and the external environment on high-speed rail safety. These works strongly support the improvement of China’s railway environmental safety guarantee technology.Originality/valueWith the operation of CR450 high-speed trains with a speed of 400 km per hour and the application of high-speed train autonomous driving technology in the future, new and higher requirements have been put forward for the safety of high-speed rail operation environments. The following five aspects of work are urgently needed: (1) Research the single factor disaster mechanism of wind, rain, snow, lightning, etc. for high-speed railways with a speed of 400 kms per hour, and based on this, study the evolution characteristics of multiple safety factors and the correlation between the high-speed driving safety environment, revealing the coupling disaster mechanism of multiple influencing factors; (2) Research covers multi-source data fusion methods and associated features such as disaster monitoring data, meteorological information, route characteristics and terrain and landforms, studying the spatio-temporal evolution laws of meteorological disasters, perimeter intrusions and external environmental hazards; (3) In terms of meteorological disaster situation awareness, research high-precision prediction methods for meteorological information time series along high-speed rail lines and study the realization of small-scale real-time dynamic and accurate prediction of meteorological disasters along high-speed rail lines; (4) In terms of perimeter intrusion, research a multi-modal fusion perception method for typical scenarios of high-speed rail operation in all time, all weather and all coverage and combine artificial intelligence technology to achieve comprehensive and accurate perception of perimeter security risks along the high-speed rail line and (5) In terms of external environment, based on the existing general network framework for change detection, we will carry out research on change detection and algorithms in the surrounding environment of high-speed rail.

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Section: Mechanism and Spatial And Temporal Evolution Of Heavy Rainfa...mentioning

confidence: 99%

Current status and prospects of research on safety situation awareness of high speed railway operation environment

Shi,

Wang,

You

et al. 2024

View full text Add to dashboard Cite

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Surge protective device failure caused by triggered lightning continuing current and M component

Chen

Yan

Zhang

et al. 2023

Electric Power Systems Research

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Analysis of Lightning Transients in 2 × 25 kV 50 Hz Railway Traction System using EMTP

Andreotti

Pasquale

Pagano

et al. 2022

2022 AEIT International Annual Conference (AEIT)

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Lightning Transients of the Overhead Catenary System Pillar and its Adjacent Grounding Systems in a High-Speed Railway Depot

Cited by 3 publications

References 27 publications

Current status and prospects of research on safety situation awareness of high speed railway operation environment

Current status and prospects of research on safety situation awareness of high speed railway operation environment

Surge protective device failure caused by triggered lightning continuing current and M component

Analysis of Lightning Transients in 2 × 25 kV 50 Hz Railway Traction System using EMTP

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