Study on Characterization of Electrical Contact between Pantograph and Catenary

2011 IEEE 57th Holm Conference on Electrical Contacts (Holm) Pub Date : 2011-10-06 DOI:10.1109/HOLM.2011.6034815

Wangang Wang, Anping Dong, Guangning Wu, Guoqiang Gao, Lijun Zhou, Bo Wang, Yi Cui, Donglai Liu, Dajian Li, Tianzhi Li

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引用次数: 18

Abstract

Perfect sliding contact which requires appropriate contact force between pantograph and contact wire is the key point to guarantee the stability of current collection in locomotive. In order to study on characterization of electrical contact between pantograph and catenary, first, a novel test apparatus of pantograph electrical contact has been developed according to the filed application. The apparatus can simulate laterally (zigzag) movement, vertical vibration and the flexible line contact between pantograph contact strip and contact wire. Then, electrical contact experiments are carried out using this apparatus. Characteristics of static contact resistance under various contact force and traction current are analyzed. A fitted formula for contact resistance is proposed which have two independent variables of contact force and traction current. Possible mechanism for variation of contact resistance is represented in microscopic view of contact surface. It is demonstrated that the static contact resistance decreases with the contact force and traction current increasing.

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受电弓与接触网电接触特性的研究

良好的滑动接触要求受电弓与接触导线之间有适当的接触力，是保证机车集电流稳定的关键。为了研究受电弓与接触网的电接触特性，首先根据实际应用，研制了一种新型的受电弓电接触测试装置。该装置可以模拟受电弓接触条与接触线之间的横向(之字形)运动、纵向振动和柔性线接触。然后，利用该装置进行了电接触实验。分析了不同接触力和牵引电流下的静接触电阻特性。提出了包含接触力和牵引电流两个独立变量的接触电阻拟合公式。从接触表面的微观角度阐述了接触电阻变化的可能机理。结果表明，静接触电阻随接触力和牵引电流的增大而减小。

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

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