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基于特征相关性的牵引系统主回路接地故障诊断

陈志文 李学明 徐绍龙 彭涛 阳春华 桂卫华

陈志文,  李学明,  徐绍龙,  彭涛,  阳春华,  桂卫华.  基于特征相关性的牵引系统主回路接地故障诊断.  自动化学报,  2021,  47(7): 1516−1529 doi: 10.16383/j.aas.c190588
引用本文: 陈志文,  李学明,  徐绍龙,  彭涛,  阳春华,  桂卫华.  基于特征相关性的牵引系统主回路接地故障诊断.  自动化学报,  2021,  47(7): 1516−1529 doi: 10.16383/j.aas.c190588
Chen Zhi-Wen,  Li Xue-Ming,  Xu Shao-Long,  Peng Tao,  Yang Chun-Hua,  Gui Wei-Hua.  Feature correlation-based ground fault diagnosis method for main circuit of traction system.  Acta Automatica Sinica,  2021,  47(7): 1516−1529 doi: 10.16383/j.aas.c190588
Citation: Chen Zhi-Wen,  Li Xue-Ming,  Xu Shao-Long,  Peng Tao,  Yang Chun-Hua,  Gui Wei-Hua.  Feature correlation-based ground fault diagnosis method for main circuit of traction system.  Acta Automatica Sinica,  2021,  47(7): 1516−1529 doi: 10.16383/j.aas.c190588

基于特征相关性的牵引系统主回路接地故障诊断

doi: 10.16383/j.aas.c190588
基金项目: 国家自然科学基金(61803390, 61790571, 61773407), 轨道交通节能控制与安全监测湖南省重点实验室(2017TP1002), 高性能复杂制造国家重点实验室自主研究课题(ZZYJKT2020-14), 博士后基金(2019T120713)资助
详细信息
    作者简介:

    陈志文:中南大学自动化学院副教授. 2016年获得德国杜伊斯堡−埃森大学博士学位. 主要研究方向为基于模型和数据驱动的故障诊断技术. E-mail: zhiwen.chen@csu.edu.cn

    李学明:株洲中车时代电气股份有限公司高级工程师. 2011年在中南大学获硕士学位. 主要研究方向为牵引系统故障诊断与预测. 本文通信作者. E-mail: lxm_hnu@163.com

    徐绍龙:株洲中车时代电气股份有限公司高级工程师. 2016年在浙江大学获硕士学位. 主要研究方向为牵引系统控制, 故障诊断与预测. E-mail: xusl@csrzic.com

    彭涛:中南大学自动化学院教授. 2005年获得中南大学博士学位. 主要研究方向为复杂系统的故障诊断与容错控制. E-mail: pandtao@csu.edu.cn

    阳春华:中南大学自动化学院教授. 1985年获得中南工业大学学士学位. 主要研究方向为复杂工业过程建模与优化, 故障诊断与智能化系统. E-mail: ychh@csu.edu.cn

    桂卫华:中国工程院院士, 中南大学自动化学院教授. 1981年获得中南矿冶学院硕士学位. 主要研究方向为复杂工业过程建模, 优化与控制应用和知识自动化. E-mail: gwh@csu.edu.cn

Feature Correlation-based Ground Fault Diagnosis Method for Main Circuit of Traction System

Funds: National Natural Science Foundation of China (61803390, 61790571, 61773407), Key Laboratory of Energy Saving Control and Safety Monitoring for Rail Transportation (2017TP1002), the Project of State Key Laboratory of High Performance Complex Manufacturing, Central South University (ZZYJKT2020-14), Postdoctoral Foundation (2019T120713)
More Information
    Author Bio:

    CHEN Zhi-Wen Associate professor at the School of Automation, Central South University. He received his Ph.D. degree from University of Duisburg-Essen, Germany in 2016. His research interest covers model-based and data-based fault diagnosis

    LI Xue-Ming Senior engineer at Zhuzhou CRRC times Electric Co., Ltd. He received his master degree from Central South University in 2011. His research interest covers traction system control, fault diagnosis and prediction. Corresponding author of this paper

    XU Shao-Long Senior engineer at Zhuzhou CRRC times Electric Co., Ltd. He received his master degree from ZheJiang University in 2016. His research interest covers traction system control, fault diagnosis and prediction

    PENG Tao Professor at School of Automation, Central South University. She received her Ph.D. degree from Central South University in 2005. Her research interest covers fault diagnosis and fault tolerant control for complex systems

    YANG Chun-Hua Professor at the School of Automation, Central South University. She received her bachelor degree from Central South University of Technology in 1985. Her research interest covers complex industrial process modeling and optimization, fault diagnosis and intelligent system

    GUI Wei-Hua Academician of the Chinese Academy of Engineering, and professor at the School of Automation, Central South University. He received his master degree from Central South Institute of Mining and Metallurgy in 1981. His research interest covers complex industrial process modeling, optimization and control applications, and knowledge automation

  • 摘要:

    本文针对目前机车、动车牵引系统中主回路接地故障的精确定位问题, 提出了一种基于特征相关性的故障诊断方法. 该方法通过在线计算与故障关联的特征变量, 提取相关故障特征指标, 并考虑各故障特征指标间的相关性, 利用典型相关分析得到残差, 以实现快速故障检测. 进一步, 构建基于残差方向的故障隔离方法, 实现准确地故障定位. 现场实验表明, 与传统基于相关性的故障诊断方法以及实际工程应用方法相比, 在存在较大测量噪声与暂态工况变化时, 本文所提方法能实现更好的故障检测与隔离性能, 具有良好的应用价值.

  • 图  1  牵引系统典型主电路原理图

    Fig.  1  Schematic diagram of main circuit of traction system

    图  2  故障类型F1、F2和F5的波形特征

    Fig.  2  Features of F1、F2 and F5 faults

    图  3  基于特征相关性的故障检测算法流程图

    Fig.  3  Flowchart of the feature correlation-based fault detection algorithm

    图  4  基于特征相关性的牵引主回路接地故障诊断算法原理框图

    Fig.  4  Diagram of the feature correlation-based fault diagnosis algorithm for main circuit of the traction system

    图  5  机车牵引变流器实物图

    Fig.  5  Photo of the traction converter for field test

    图  6  牵引变流器对外连接端子布置图

    Fig.  6  Layout diagram of connection terminals under traction converter cabinet

    图  7  存在故障类型F1时的检测诊断结果

    Fig.  7  Diagnosis results in F1 case

    图  10  故障残差方向显示

    Fig.  10  Illustration of five fault directions

    表  1  牵引系统常见主回路接地故障点

    Table  1  The ground points of typical faults

    序号 主回路接地点 主电路中位置 故障代号
    1 四象限输入侧正端接地 图1接地点①、③ F1
    2 四象限输入侧负端接地 图1接地点② F2
    3 正母排接地 图1接地点④ F3
    4 负母排接地 图1接地点⑤ F4
    5 逆变输出侧接地 图1接地点⑥ F5
    下载: 导出CSV

    表  2  不同接地故障类型时故障特征变量$ I_{x1} $变化规律

    Table  2  The change rules of $ I_{x1} $with different ground faults under working condition C5

    故障类型 $ I_{x1} $变化规律 $ I_{x1} $相关指标
    F1 其值在−0.5$ {\bar U_{s1}} $与0.5$ {\bar U_{s1}} $间变化, 均值, 方差, 最大值, 最大峰值
    F2 且频率与四象限模块开关频率相同
    F3 其值约为−0.5$ {\bar U_{s1}} $
    F4 其值约为0.5$ {\bar U_{s1}} $
    F5 其值在−0.5$ {\bar U_{s1}} $与0.5$ {\bar U_{s1}} $间变化,
    且频率与逆变模块开关频率相同
    下载: 导出CSV

    表  3  不同接地故障类型时故障特征变量 $ I_{x2} $变化规律(工况5)

    Table  3  The change rules of $ I_{x2} $ with different ground faults under work condition C5

    故障类型 $ I_{x2} $变化规律 $ I_{x2} $相关时域指标
    F1 $ I_{x2} $均值小于一定门槛值 (负值)
    F2 $ I_{x2} $均值大于一定门槛值 (正值) 均值
    F5 $ I_{x2} $均值约为 0
    下载: 导出CSV

    表  4  算法对比验证所采用数据

    Table  4  Test data for comparing and verifying algorithms

    序号 y 本文所提的FC-CCA方法 基于原始数据的CCA方法
    指标/变量 含义 指标/变量 含义
    1 $ y_a $ $ J_1 $ $ I_{x1} $均值 $ U_{s1} $ 中间直流电压
    2 $ y_a $ $ J_2 $ $ I_{x1} $方差 $ U_{s2} $ 半中间电压
    3 $ y_a $ $ J_5 $ $ I_{x2} $均值 $ U_2 $ 牵引变压器次边电压
    4 $ y_b $ $ J_3 $ $ I_{x1} $最大值 $ I_{r1} $ 四象限一输入电流
    5 $ y_b $ $ J_4 $ $ I_{x1} $最大峰值 $ I_{r2} $ 四象限二输入电流
    下载: 导出CSV

    表  5  不同故障类型时测量值变化情况说明

    Table  5  Description of changes in measured in different fault types

    故障类型 可检测工况
    C3 C4 C5
    F1
    F2
    F3
    F4
    F5 × ×
    下载: 导出CSV

    表  6  不同故障类型时FDR与CIR结果对比

    Table  6  Comparison results of FDR and CIR in different fault types

    故障代号 故障检测率(FDR) 正确隔离率(CIR)
    FC-CCA
    方法
    CCA
    方法
    传统工程
    方法
    FC-CCA
    方法
    CCA
    方法
    传统工程
    方法
    F1 100% 99.99% 64.09% 100% 27.48% 0%
    F2 100% 100% 79.74% 100% 14.44% 0%
    F3 100% 100% 100% 100% 61.12% 0%
    F4 100% 100% 79.03% 100% 21.93% 0%
    F5 99.84% 99.68% 94.16% 99.32% 1.42% 0%
    下载: 导出CSV
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  • 收稿日期:  2019-08-17
  • 录用日期:  2019-11-25
  • 刊出日期:  2021-07-27

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