Pattered manipulation method for heavy-haul trains considering air brake performance diversity

XIAO Zhiming; WANG Dalong; WANG Qingyuan; LIU Qiangqiang; WEI Mi

doi:10.13890/j.issn.1000-128X.2023.01.004

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Pattered manipulation method for heavy-haul trains considering air brake performance diversity

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

- Pattered manipulation method for heavy-haul trains considering air brake performance diversity
- Electric Drive for Locomotives Issue 1, Pages: 24-32(2023)
- 作者机构：
  
  1.国家能源投资集团朔黄铁路发展有限责任公司，河北肃宁 062350
  2.西南交通大学电气工程学院，四川成都;610031
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128X.2023.01.004
  CLC： U292.92⁺1
- Published：10 January 2023，
  
  Received：27 October 2022，
- 稿件说明：
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肖致明, 王大龙, 王青元, 等. 考虑制动性能差异的重载列车模式化操纵方法[J]. 机车电传动, 2023(1): 24-32.

XIAO Zhiming, WANG Dalong, WANG Qingyuan, et al. Pattered manipulation method for heavy-haul trains considering air brake performance diversity[J]. Electric Drive for Locomotives, 2023(1): 24-32.
肖致明, 王大龙, 王青元, 等. 考虑制动性能差异的重载列车模式化操纵方法[J]. 机车电传动, 2023(1): 24-32. DOI： 10.13890/j.issn.1000-128X.2023.01.004.

XIAO Zhiming, WANG Dalong, WANG Qingyuan, et al. Pattered manipulation method for heavy-haul trains considering air brake performance diversity[J]. Electric Drive for Locomotives, 2023(1): 24-32. DOI： 10.13890/j.issn.1000-128X.2023.01.004.

摘要

重载列车在长大下坡道循环制动时，空气制动的性能差异较大、列车纵向冲动较大，偶发断钩事故，给机车乘务员操作造成极大困难。以LKJ2000机车运行监控装置记录的朔黄铁路数据和相关线路条件为基础，建立重载列车牵引计算模型，对不同制动性能的列车提出相应的优化操作方案。采用理论分析与现场运用需求相结合的研究方法，分析重载列车长大下坡线路操作规程，并基于重载列车空气制动线路的试验数据模型，以50 kPa减压量下的空气制动性能为基准，计算不同制动速度下的空气制动等效效率；以具体案例为对象，分析不同操作方案对列车运行速度曲线变化的影响规律，并在此基础上，以列车安全运行、避免停缓为目标，根据制动时的速度变化判断空气制动效率，对列车操作控制策略进行优化。经过大量仿真计算和数据分析，提出“北大牛—原平南”区间不同空气制动操作方案的判断条件，并制定相应的优化操作示意图，为重载列车安全高效地运行提供理论支撑。

Abstract

The heavy-haul trains under cyclic braking in the long steep downhill sections suffer from large difference in air braking performance and heavy longitudinal impulse

occasionally causing coupler breaking accidents and bringing great difficulties to drivers’ operation. In the current study

a traction calculation model was established for heavy-haul trains based on the data of Shuozhou-Huanghua railway recorded by the LKJ2000 locomotive operation monitoring equipment and the relevant track conditions

and optimized operation strategies were proposed for trains with different braking performances. Following the research approach of combining theoretical analysis with field application requirements

analysis was made on the operating procedures of heavy-haul trains in long steep downhill sections

and the air braking efficiency was calculated at different braking speeds

taking the air braking performance at 50 kPa pressure reduction as the benchmark and based on the model established from test data of the air brake line on heavy-haul trains. Analysis was also made on the influence law of different operation strategies on the speed curve change in the specific cases; furthermore

according to the air braking efficiency estimated on the basis of speed change during braking

such train operation strategies were optimized to avoid delayed stopping and ensure operation safety. Based on extensive simulation calculation and data analysis

the boundary conditions among air braking operation strategies were raised for the Beidaniu to Yuanpingnan section

and the corresponding optimized operation diagrams were formulated

providing theoretical support for safe and efficient operation of heavy-haul trains.

关键词

重载列车长大下坡空气制动等效效率优化操作减压量

Keywords

heavy-haul trainslong steep downhill sectionsair braking efficiencyoperation optimizationpressure reduction

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