Multi-condition harmonic characteristics and negative sequence analysis of EMU

Haoqiang Zhou; Haigang Zhang; Song Zeng

doi:10.1117/12.2679785

18 July 2023 Multi-condition harmonic characteristics and negative sequence analysis of EMU

Haoqiang Zhou, Haigang Zhang, Song Zeng

Proceedings Volume 12722, Third International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023); 1272242 (2023) https://doi.org/10.1117/12.2679785
Event: International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023), 2023, Hangzhou, China

Abstract

In the study of harmonic and negative sequence current of high-speed railway traction power supply system, many literatures have the regret of insufficient completeness of simulation system. In this paper, the negative sequence current distribution of the system under no-load, traction and regenerative braking conditions is analyzed in detail from the design of converter to the simulation operation modeling process of EMU. The negative sequence characteristic waveforms under various working conditions are obtained. In addition, the simulation results show that the regenerative braking condition is rich in harmonics, and the generated energy will be used by the locomotive under traction. These poor energy will threaten the current collection and commutation process of high-speed trains. According to the waveform in this paper, the trend of negative sequence current can be summarized and used for the prediction of negative sequence current. The negative sequence current under different working conditions can realize the accurate classification and identification of the working conditions, so as to divide and rule the working conditions, and more reasonably avoid the occurrence of accidents such as generator burning caused by negative sequence problems.

Citation Download Citation

Haoqiang Zhou, Haigang Zhang, and Song Zeng "Multi-condition harmonic characteristics and negative sequence analysis of EMU", Proc. SPIE 12722, Third International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023), 1272242 (18 July 2023); https://doi.org/10.1117/12.2679785

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