Computational Technology Resources - CCC

J. Rebelo¹, P. Antunes^1,2, J. Pombo^1,2,3 and D. Campbell⁴

¹Institute of Railway Research, School of Computing and Engineering, University of Huddersfield, UK
²IDMEC, Instituto Superior Técnico, Universidade de Lisboa, Portugal
³ISEL, Instituto Politecnico de Lisboa, Portugal
⁴NR, Network Rail, United Kingdom

doi:10.4203/ccc.7.4.17

J. Rebelo, P. Antunes, J. Pombo, D. Campbell, "Influence of Overhead Line Equipment Irregularities on Pantograph-Catenary Interaction", in J. Pombo, (Editor), "Proceedings of the Sixth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 7, Paper 4.17, 2024, doi:10.4203/ccc.7.4.17

Keywords: pantograph-catenary interaction, catenary irregularities, current collection performance, contact forces, maintenance limits, 3D finite element model.

Abstract

Achieving good contact quality between the pantograph and overhead line equipment (OLE) is fundamental to ensure reliable electric railway operation. Contact wire irregularities may affect the pantograph-OLE interaction and stability of current collection. Therefore, the maintenance of the OLE and the study of the impact of such geometric deviations is a field of interest. In the present paper, the influence of OLE irregularities, in both its vertical and lateral directions, on pantograph-catenary interaction is studied. OLE finite element models are built, from a nominal baseline scenario to increasing levels of irregularities, and are subsequently used to perform dynamic analyses and assessment of contact forces. The results demonstrate that, at conventional speeds (up to 100 mph) and in single pantograph operation, the presence of irregularities within the maintenance thresholds does not adversely impact contact quality. Increasing the irregularities by 100% leads to a dynamic performance still within the applicable thresholds, which may indicate that the current maintenance limits are overly conservative.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 7 PROCEEDINGS OF THE SIXTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 4.17 Influence of Overhead Line Equipment Irregularities on Pantograph-Catenary Interaction J. Rebelo¹, P. Antunes^1,2, J. Pombo^1,2,3 and D. Campbell⁴ ¹Institute of Railway Research, School of Computing and Engineering, University of Huddersfield, UK ²IDMEC, Instituto Superior Técnico, Universidade de Lisboa, Portugal ³ISEL, Instituto Politecnico de Lisboa, Portugal ⁴NR, Network Rail, United Kingdom doi:10.4203/ccc.7.4.17 Full Bibliographic Reference for this paper J. Rebelo, P. Antunes, J. Pombo, D. Campbell, "Influence of Overhead Line Equipment Irregularities on Pantograph-Catenary Interaction", in J. Pombo, (Editor), "Proceedings of the Sixth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 7, Paper 4.17, 2024, doi:10.4203/ccc.7.4.17 Keywords: pantograph-catenary interaction, catenary irregularities, current collection performance, contact forces, maintenance limits, 3D finite element model. Abstract Achieving good contact quality between the pantograph and overhead line equipment (OLE) is fundamental to ensure reliable electric railway operation. Contact wire irregularities may affect the pantograph-OLE interaction and stability of current collection. Therefore, the maintenance of the OLE and the study of the impact of such geometric deviations is a field of interest. In the present paper, the influence of OLE irregularities, in both its vertical and lateral directions, on pantograph-catenary interaction is studied. OLE finite element models are built, from a nominal baseline scenario to increasing levels of irregularities, and are subsequently used to perform dynamic analyses and assessment of contact forces. The results demonstrate that, at conventional speeds (up to 100 mph) and in single pantograph operation, the presence of irregularities within the maintenance thresholds does not adversely impact contact quality. Increasing the irregularities by 100% leads to a dynamic performance still within the applicable thresholds, which may indicate that the current maintenance limits are overly conservative. download the full-text of this paper (PDF, 11 pages, 877 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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