Research on Real-time Diagnosis and Protection Strategy of Line-side Over-current Fault of Train Traction System

Xueming LI; Kan LIU; Shaolong XU; Qing HUANG

doi:10.13890/j.issn.1000-128x.2021.06.011

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Research on Real-time Diagnosis and Protection Strategy of Line-side Over-current Fault of Train Traction System

Electric Traction and Control | 更新时间：2022-01-18

- Research on Real-time Diagnosis and Protection Strategy of Line-side Over-current Fault of Train Traction System
- Electric Drive for Locomotives Vol. 0, Issue 6, Pages: 81-86(2021)
- 作者机构：
  
  1.湖南大学　机械与运载工程学院，湖南　长沙　410082
  2.株洲中车时代电气股份有限公司，湖南　株洲　412001
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128x.2021.06.011
  CLC：
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Xueming LI, Kan LIU, Shaolong XU, et al. Research on Real-time Diagnosis and Protection Strategy of Line-side Over-current Fault of Train Traction System. [J]. Electric Drive for Locomotives 0(6):81-86(2021)
DOI：

Xueming LI, Kan LIU, Shaolong XU, et al. Research on Real-time Diagnosis and Protection Strategy of Line-side Over-current Fault of Train Traction System. [J]. Electric Drive for Locomotives 0(6):81-86(2021) DOI： 10.13890/j.issn.1000-128x.2021.06.011.

摘要

目前机车和动车组牵引系统网侧过流故障存在诊断与保护方式单一且无法准确定位具体故障源的问题，因此提出了一种基于决策树模型的实时诊断方法：通过离线分析网侧过流故障的相关信号，得出其故障特征量并建立决策树模型；实时采集运行过程中的信号并计算其故障特征量，基于决策树模型来实现故障的准确定位；根据故障诊断结果采取不同保护策略，以实现故障的最优保护与隔离。现场测试结果表明，该方法简单有效，可实现对故障的实时诊断与最优保护，大幅提升列车可用性和智能化水平。

Abstract

At present, the line-side over-current faults of locomotives and EMUs traction system have the problem that the diagnosis and protection methods are single and the speci fic fault source cannot be accurately located. So a real-time diagnosis method based on decision tree model was proposed. Based on the off-line analysis of the related line-side over-current fault related signals,the fault characteristics were obtained and the decision tree model was established; The real-time acquisition of signals in the process of operation and the calculation of their fault characteristics were carried out, then based on the decision tree model, the accurate fault location was realized; And different protection strategies were adopted according to the fault diagnosis results, so as to achieve the optimal protection and isolation of faults. The field test results show that the method is simple and effective, can realize real-time accurate fault diagnosis and optimal protection, and greatly improve the train availability and intelligence level.

关键词

动车组故障诊断牵引系统实时诊断网侧过流决策树诊断模型

Keywords

EMUsfault diagnosistraction systemreal-time diagnosisline-side over-currentdecision tree diagnosis model

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