高速列车与牵引供电网高次谐波谐振分析

Analysis of High Frequency Resonances in the Power Supply Line of the High Speed Train

本文主要研究了由于高速列车与牵引供电网参数不匹配而引起的高次谐波谐振现象。首先,简要介绍了高速铁路牵引供电系统与高速列车牵引传动系统建模的理论和方法。从理论上分析了高速列车网侧电流谐波特性,基于传统的牵引网单线模型分析了谐振现象产生机理。然后,参考京沪线先导段某供电区间和CRH-380A型动车组,搭建了系统仿真模型,仿真分析了高次谐波谐振引起的列车端电压升高的现象、供电区间谐振点分布规律及阻抗特性。

The high frequency resonance caused by the mismatch between the high speed train and the power supply line is analyzed in this paper.The modeling methods of the high-speed railway power supply system and high speed train traction drive system are described in detail.And the characteristic of harmonic current generated by the high speed train is mentioned in theory.The generation mechanism of resonance is investigated based on the traditional power supply line simulation model.Then,according to Beijing-Shanghai line and CRH-380A,the simulation model is built with the MTL model.It's resulted that high frequency resonances may cause the high value of harmonic voltage.In addition,the distribution pattern of resonant points and impedance characteristic are researched deeply.