实时评估地面绝缘降解和故障预警方法在多种操作条件下对火车引驱动系统进行实时评估
Zhenglin Cheng1, Kan Liu1, Xueming Li2
1College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China.
Sensors (Basel, Switzerland)
|March 17, 2025
概括
本研究引入了一种实时方法,用于预警火车引引力系统的地面绝缘降解. 该方法通过在所有操作条件下检测和定位接地故障来确保安全.
科学领域:
- 电气工程 电气工程
- 铁路运输系统 铁路运输系统
- 故障诊断和监测,以及监测故障的情况.
背景情况:
- 目前用于诊断机车和高速列车引驱动系统中主电路接地故障的现有方法仅限于单个操作条件.
- 在所有运行状态中,早期预警和全面的故障诊断对于确保火车安全和防止级联故障至关重要.
- 地面绝缘降解构成重大风险,需要先进的监测和预警系统.
研究的目的:
- 提出一种机制和数据驱动的实时评估方法,用于对引驱动系统的地面绝缘降解的早期预警.
- 在所有操作条件下实现故障诊断和预警,克服现有的单一条件诊断方法的局限性.
- 通过准确的故障信息,增强火车安全并支持最佳的退化运行策略.
主要方法:
- 分析电路特性和数学建模各种操作条件下的接地故障和传感器信号.
- 从工程经验中提取一组特征索引,用于准确分类不同的接地故障类型.
- 使用在现场故障数据和实时传感器信号收集上训练的决策树分类模型开发故障诊断规则库.
主要成果:
- 通过在各种操作条件下精确检测和定位接地故障.
- 成功实施了对接地故障严重性的实时警告.
- 控制器硬件在循环测试验证实了该方法的有效性和工程适用性.
结论:
- 拟议的方法提供了一个可靠的解决方案,用于实时,完全运行条件的火车引驱动系统的接地故障检测和警告.
- 该系统通过早期识别绝缘降解,确保了列车安全的提高.
- 该方法为未来的最佳降解运行规划提供了有价值的数据.
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