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首页> 外文期刊>Applied Computational Electromagnetics Society journal >Research on EMI of Traction Network Transient Current Pulse on Shielded Cable Terminal Load
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Research on EMI of Traction Network Transient Current Pulse on Shielded Cable Terminal Load

机译：Research on EMI of Traction Network Transient Current Pulse on Shielded Cable Terminal Load

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摘要

The transient current pulse (TCP) causedby the traction network short-circuit fault (TNSF) willproduce a high-strength transient electromagnetic field(TEMF). The electromagnetic field will interfere withnearby weak current equipment through the shielded cable.In this paper, a transient circuit model (TCM) forthe short-circuit traction network is proposed to calculatethe transient current. The short circuit is equivalentto a ring, and the TEMF transient electromagnetic fieldis calculated based on the magnetic dipole. The currentresponse of the TEMF transient electromagnetic field onthe shielded cable is deduced based on the transmissionline theory and verified by experiments. The electromagneticinterference (EMI) of a TEMF transient electromagneticfield to the shielded cable terminal load werewas studied under various incidence angles, azimuth angles,and polarization angles. The results demonstratethat the greater the incident angle and azimuth angle, thegreater the EMI on the terminal load. The horizontaldistance between the shielded cable head and the shortcircuitpoint should be greater than 6 m, and the incidentangle should be greater than 45 . This method can providea theoretical basis for the electromagnetic compatibilityresearch of traction power supply systems and theirnearby weak current equipment.

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