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Drift characteristics and the multi-field coupling stress mechanism of the pantograph-catenary arc under low air pressure

引用

Chinese Physics B 2023年第4期32卷 493-503页

作者：许之磊高国强钱鹏宇肖嵩魏文赋杨泽锋董克亮马亚光吴广宁 School of Electrical Engineering Southwest Jiaotong UniversityChengdu 610031China Research and Development Department Chengdu Guojia Electrical Engineering Co.LtdChengdu 611756China

The fault caused by a pantograph-catenary arc is the main factor that threatens the stability of high-speed railway energy ***-catenary arc vertical drift is more severe than the case under normal pressure,as it is easy to develop the rigid busbar,which may lead to the flashover occurring around the support *** establish a pantograph-catenary arc experiment and diagnosis platform to simulate low pressure and strong airflow ***,the variation law of arc drift height with time under different air pressures and airflow velocities is ***,arc drift characteristics and influencing factors are *** physical process of the arc column drifting to the rigid busbar with the jumping mechanism of the arc root on the rigid busbar is *** order to further explore the mechanism of the above physical process,a multi-field stress coupling model is built,as the multi-stress variation law of arc is quantitatively *** dynamic action mechanism of multi-field stress on arc drifting characteristics is explored,as the physical mechanism of arc drifting under low pressure is theoretically *** research results provide theoretical support for arc suppression in high-altitude areas.

关键词： pantograph-catenary arc low pressure multi-field stress coupling model arc column drift

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pantograph-catenary are test apparatus for high-speed railway

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Instrumentation 2014年第2期1卷 60-66页

作者： WU Jie WU Guangning GAO Guoqiang ZHU Guangya HAO Jing ZHU Ningjun ZHOU Yue School of Electrical Engineering Southwest Jiaotong UniversityChengdu 610031China

With the continuous increase of train speed,undulations of catenary and vibrations of the pantograph head result in generating pantograph- catenary arc frequently,intensifying the abrasion between pantograph strip and catenary wire,which has seriously influenced the current collection and safety of electric multi units(EMU). It is necessary to study the pantographcatenary arc in immediately. Some researchers develop a few pantograph- catenary arc testing equipment,which couldn’t really reflect the operating condition of pantograph-catenary system. In this paper,the pantograph-catenary arc test apparatus was developed,which simulated the flexible and straight contact of pantograph strip and catenary wire,based on the coupling relationship between pantograph and catenary. The equipment was used to research the electrical parameters of the pantograph-catenary arc and the dynamic contact resistance.

关键词： pantograph-catenary arc dynamic contact resistance pantograph strip catenary wire

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