Research on the phased development characteristics of pantograph catenary arc under low air pressure and strong airflow

XU Yue; QIAN Pengyu; CHEN Huan; PENG Wei; YANG Zefeng

doi:10.13890/j.issn.1000-128X.2023.03.101

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Research on the phased development characteristics of pantograph catenary arc under low air pressure and strong airflow

Railway Electrification | 更新时间：2024-08-02

- Research on the phased development characteristics of pantograph catenary arc under low air pressure and strong airflow
- Electric Drive for Locomotives Issue 3, Pages: 150-156(2023)
- 作者机构：
  
  1.中车青岛四方机车车辆股份有限公司，山东青岛　　266111
  2.西南交通大学电气工程学院，四川成都;611756
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128X.2023.03.101
  CLC： U225.3
- Published：10 May 2023，
  
  Received：08 March 2023，
  
  Revised：06 April 2023，
- 稿件说明：
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徐跃, 钱鹏宇, 陈欢, 等. 低气压强气流下弓网电弧阶段性发展特性研究[J]. 机车电传动, 2023(3): 150-156.

XU Yue, QIAN Pengyu, CHEN Huan, et al. Research on the phased development characteristics of pantograph catenary arc under low air pressure and strong airflow[J]. Electric Drive for Locomotives,2023(3): 150-156.
徐跃, 钱鹏宇, 陈欢, 等. 低气压强气流下弓网电弧阶段性发展特性研究[J]. 机车电传动, 2023(3): 150-156. DOI： 10.13890/j.issn.1000-128X.2023.03.101.

XU Yue, QIAN Pengyu, CHEN Huan, et al. Research on the phased development characteristics of pantograph catenary arc under low air pressure and strong airflow[J]. Electric Drive for Locomotives,2023(3): 150-156. DOI： 10.13890/j.issn.1000-128X.2023.03.101.

摘要

弓网电弧是危害高速列车受流质量的重要原因，低气压作用下弓网电弧的运动特性及发展规律与常压下存在显著差异，为保障高速列车的安全运行，文章对低气压工况下的弓网电弧展开研究。首先搭建弓网电弧试验平台，试验记录低气压弓网电弧发展过程，分析不同气压条件下电弧电压、弧长、弧根运动速度随时间的变化曲线。试验结果表明，弓网电弧的发展存在明显的阶段性特征，发展全过程可区分为电弧初始阶段、快速发展阶段与频繁震荡阶段。然后对各发展阶段电弧电气特性与运动特性进行了分析：初始阶段电弧电压相对稳定，电弧运动缓慢；快速发展阶段弧根移动速度增大，电弧电压快速提升，电弧电流相应下降；频繁震荡阶段电弧飘弧严重，出现弧根跳跃现象，电压电流波动剧烈，对列车供电质量危害最大。最后研究了气压、气流、电流对电弧发展速度与电弧弧长的影响规律，利用多元线性回归方法分析弓网电弧对各影响因素的敏感程度，发现环境气压的改变对电弧发展速度的影响效果较大，环境气流的变化影响效果其次，电流影响效果较小。研究结果为减少弓网电弧损害和低气压强气流下电弧调控提供了理论基础。

Abstract

Pantograph catenary arc is an important factor threatening the current-receiving quality of high-speed trains. The motion characteristics and development law of pantograph arc under low air pressure are significantly different from those under atmospheric pressure. In order to ensure the safe operation of high speed train

the pantograph arc under low air pressure conditions was studied. Firstly

a pantograph arc test platform was built

and the development process of the pantograph arc with low air pressure was recorded. The voltage

length and root movement speed curves with time of arc were analyzed under different air pressure. The experimental results show that there are obvious phased characteristics in the development of pantograph arc

and the whole development process can be divided into three stages

including the initial stage

the rapid development stage and the frequent oscillation stage of arc. The electrical characteristics and motion characteristics of arc in each development stage were analyzed. The arc voltage was relatively stable in the initial stage

and the arc motion was slow. In the rapid development stage

the arc root movement speed and the arc voltage increased rapidly

and the arc current decreased. In the frequent oscillation stage

the arc drifted seriously

and the arc root jumping phenomenon occurred

and the voltage and current fluctuated sharply

which was the most harmful stage for the quality of train power supply. The influence rule of air pressure

airflow and current on arc development speed and arc length was analyzed. The multiple linear regression method was used to analyze the sensitivity of pantograph arc to various influencing factors

and it was found that the influence of ambient air pressure change on arc development speed was greater

the influence effect of airflow was secondary

and the influence effect of current was small. The research results provide a research basis for reducing pantograph arc damage and arc regulation under low pressure and strong airflow.

关键词

弓网系统低气压强气流电弧发展规律敏感性分析高速列车高速铁路

Keywords

pantograph catenary systemlow air pressurestrong airflowarc development lawsensitivity analysishigh-speed trainhigh-speed railway

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