Influencing factors and optimization measures for longitudinal impulse of 20 000-tonne combined heavy-haul trains

MA Ruijie; WU Jian

doi:10.13890/j.issn.1000-128X.2022.01.017

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Influencing factors and optimization measures for longitudinal impulse of 20 000-tonne combined heavy-haul trains

Railway Rolling Stock | 更新时间：2024-08-02

- Influencing factors and optimization measures for longitudinal impulse of 20 000-tonne combined heavy-haul trains
- Electric drive for locomotives Issue 1, Pages: 103-108(2022)
- 作者机构：
  
  1.国能运输技术研究院有限责任公司，北京　　100089
  2.西南交通大学牵引动力国家重点实验室，四川成都;610031
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128X.2022.01.017
  CLC： U292.92⁺1
- Published：10 January 2022，
  
  Received：22 March 2021，
  
  Revised：15 December 2021，
- 稿件说明：
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MA Ruijie, WU Jian. Influencing factors and optimization measures for longitudinal impulse of 20 000-tonne combined heavy-haul trains. [J]. Electric drive for locomotives (1):103-108(2022)
DOI：

MA Ruijie, WU Jian. Influencing factors and optimization measures for longitudinal impulse of 20 000-tonne combined heavy-haul trains. [J]. Electric drive for locomotives (1):103-108(2022) DOI： 10.13890/j.issn.1000-128X.2022.01.017.

摘要

通过对朔黄铁路2万t重载组合列车的运行试验数据进行分析，得出引起列车纵向冲动过大的具体原因和影响因素，主要为列车在长大下坡道缓解时再生制动力较大、长大下坡道缓解地点选择不当和列车在大坡道与小坡道过渡区间运行等，提出缓解纵向冲动的方案为优化列车再生制动力和调整缓解地点等措施。优化后现场实际应用情况表明，2万t列车在朔黄线路的“神池南—宁武西”区间，以及“滴流磴—猴刎”区间的列车纵向冲动显著降低，验证了优化方案的可行性。

Abstract

Based on the analysis of operation test data of several 20 000-tonne heavy haul combined trains on Shuohuang railway line

the specific reasons and influencing factors causing excessive longitudinal impulse of 20 000-tone trains were obtained

mainly including large dynamic braking force adopted by the trains during air-braking release and the improper selection of air-braking release location on the long downhill grade line

as well as the operation process of the trains on the transition section between large and small downhill

etc. Then

the optimization schemes to alleviate longitudinal impulse were proposed

such as optimizing the dynamic braking force of the train

adjusting the air-braking release location. The field application after optimization shows that the longitudinal impulse of 20 000-tonne trains travelling from Shenchinan to Ningwuxi and Diliudeng to Houwen section of Shuohuang railway line have been significantly reduced respectively

which verifies the feasibility of the optimization measures.

关键词

2万t重载组合列车现场试验纵向冲动影响因素优化措施重载铁路

Keywords

20 000-tonne combined heavy-haul trainsfield testlongitudinal impulseinfluencing factorsoptimization measuresheavy haul railway

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