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弓网离线接触电流总谐波畸变率的实验研究

, PP. 261-266

Keywords: 弓网离线,传导电磁噪声,总谐波畸变率,电磁兼容

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Abstract:

受电弓与接触网(弓网)是电气化铁路中牵引供电系统的重要组成部分,弓网系统在运行过程中会发生离线现象,弓网离线会带来严重的电磁噪声问题.利用弓网电弧电磁噪声实验平台开展了不同条件下的弓网离线实验,分析了弓网离线状态下接触电流的频域特性.采用接触电流总谐波畸变率来表征弓网离线的传导电磁噪声特性,获得了接触电流总谐波畸变率与回流电流,接触压力和滑动速度之间的变化关系,建立了有效的接触电流总谐波畸变率数学模型,为深入研究弓网离线传导电磁噪声提供了实验依据和理论基础.

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