Pantograph Arc's Energy Characters under Various Load

2011 IEEE 57th Holm Conference on Electrical Contacts (Holm) Pub Date : 2011-10-06 DOI:10.1109/HOLM.2011.6034811

Bo Wang, Guangning Wu, Lijun Zhou, Guoqiang Gao, Wangang Wang, Donglai Liu, Dajian Li, Tianzhi Li

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引用次数: 7

Abstract

Sliding electrical contact is the main process for locomotive to carry current in electrical railways. The relative sliding velocity between pantograph and cantenary increases with the speeding up of locomotive, However¿Cthe adhesiveness between pantograph and cantenary decreases. Meanwhile, the contact status of pantograph and catenary get worse. Pantograph arc occurred frequently under these conditions. Pantograph arcing eroded pantograph slider and contact wire seriously. That affected the contacting morphology between pantograph and contact wire severely. The erosion degree is mainly determined by arcing energy. In this paper, the pantograph arc's electrical parameters such as voltage, current and energy were tested under different load by Pantograph-Catenary Arcing Experiment System (PCAES). Relationship between arc's average duration and traction current was analyzed. Influence of load power factor was studied too. Relationship between arc energy and load character was studied at last. It is demonstrated that arc's average duration becomes longer with the increasing of traction current. Arc duration under inductive load is longer than resistive load. Arc energy decreases when load power factor increase.

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不同载荷下受电弓电弧的能量特性

在电气化铁路中，滑动电接触是机车承载电流的主要过程。随着机车速度的加快，受电弓与接触网之间的相对滑动速度增大，而受电弓与接触网之间的粘接力减小。同时，受电弓与接触网的接触状况变差。在这种条件下，受电弓弧频繁发生。受电弓电弧严重侵蚀受电弓滑块和接触导线。这严重影响了受电弓与接触丝之间的接触形态。腐蚀程度主要由电弧能量决定。本文利用受电弓-接触网电弧实验系统(PCAES)对受电弓电弧在不同负载下的电压、电流、能量等电学参数进行了测试。分析了电弧平均持续时间与牵引电流的关系。并对负载功率因数的影响进行了研究。最后研究了电弧能量与负载特性的关系。结果表明，随着牵引电流的增大，电弧的平均持续时间变长。在感性负载下的弧持续时间比电阻负载下的弧持续时间长。电弧能量随负载功率因数的增大而减小。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2011 IEEE 57th Holm Conference on Electrical Contacts (Holm)

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