当前位置: X-MOL 学术IEEE Trans. Transp. Electrif. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Grounding Behavior and Optimization Analysis of Electric Multiple Units in High-Speed Railways
IEEE Transactions on Transportation Electrification ( IF 7 ) Pub Date : 2020-06-30 , DOI: 10.1109/tte.2020.3006099
Ke Huang , Zhigang Liu , Feng Zhu , Yunchuan Deng

In high-speed railways (HSRs), the overvoltages and overcurrents of train body (TB) are two critical issues for the grounding safety and reliable operation of the electric multiple units (EMUs). Running of EMUs inevitably encounters all kinds of electromagnetic transient scenarios, resulting in unfavorable surges on the TB. To restrain the surges, some grounding optimization countermeasures, such as adding groundings, have been proved to be effective for some scenarios but easily bring more rail currents into TB. Besides, only one or two operational scenarios are focused on the previous optimization design. Therefore, this article implements the grounding behavior and optimization analysis stemming from more comprehensive consideration. Typical EMUs are taken as an instance for establishing the accurate vehicle-grid models of all kinds of scenarios. Using EMTP simulations, both the TB voltages and TB currents in different grounding layouts and grounding resistances are analyzed and compared, focusing on each scenario. An optimization scheme is designed according to the comparison results. Finally, the Gini coefficient approach and entropy weight method are first applied to demonstrate the validity of optimization design, with the aim to suppress both the electromagnetic transient surges on TB and the return currents of entering TB to the maximum degree.

中文翻译:

高速铁路电气多单元接地行为及优化分析

在高速铁路(HSR)中,车体(TB)的过电压和过电流是接地安全和电气多单元(EMU)可靠运行的两个关键问题。动车组的运行不可避免地会遇到各种电磁瞬态情况,从而导致结核病的不利电涌。为了抑制电涌,一些接地优化对策(例如增加接地)已被证明在某些情况下有效,但很容易将更多的铁轨电流带入结核病。此外,只有一个或两个操作方案专注于先前的优化设计。因此,本文基于更全面的考虑实施接地行为和优化分析。以典型的动车组为例,以建立各种情况下的精确车辆-电网模型。使用EMTP仿真,可以分析和比较不同接地布局和接地电阻中的TB电压和TB电流,并重点关注每种情况。根据比较结果设计一种优化方案。最后,首先采用基尼系数法和熵权法来证明优化设计的有效性,以最大程度地抑制TB上的电磁瞬变浪涌和进入TB的返回电流。根据比较结果设计一种优化方案。最后,首先采用基尼系数法和熵权法来证明优化设计的有效性,以最大程度地抑制TB上的电磁瞬变浪涌和进入TB的返回电流。根据比较结果设计一种优化方案。最后,首先采用基尼系数法和熵权法来证明优化设计的有效性,以最大程度地抑制TB上的电磁瞬变浪涌和进入TB的返回电流。
更新日期:2020-06-30
down
wechat
bug