Overhead contact wires on electrified railways often have to deviate from their standard height to pass over road crossings or under overbridges. Long height transitions are usually needed to ensure safe and reliable operation, otherwise line speeds need to be restricted. This paper sets out how data analysis combined with advanced simulation of the dynamic interaction between pantograph and overhead contact line proved that a location on the Great Western railway electrification programme in the UK could operate at much higher line speeds despite having a very steep wire gradient. The modelled results for Steventon in Oxfordshire showed a strong correlation with physical testing, enabling line speeds to nearly double. This approach could be used in future electrification projects to achieve significant time and cost savings.

中文翻译：

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英国大西部铁路电气化：受电弓界面模型可提高速度

电气化铁路上的架空接触线通常必须偏离其标准高度，才能通过交叉路口或天桥之下。通常需要较长的高度过渡以确保安全可靠的操作，否则需要限制线速度。本文阐述了如何通过数据分析以及受电弓与架空接触线之间的动态相互作用的高级模拟来证明，尽管电线坡度非常陡，英国大西部铁路电气化计划中的某个位置仍可以以更高的线速运行。牛津郡史蒂文顿（Steventon）的模型结果显示与物理测试密切相关，使生产线速度几乎提高了一倍。此方法可用于将来的电气化项目中，以节省大量时间和成本。