列车牵引系统网侧电路接地故障实时诊断  

Real-time diagnosis of grounding fault for traction system line-side circuit

作　　者：成正林 曾颖丰 李学明 李书敏 CHENG Zhenglin;ZENG Yingfeng;LI Xueming;LI Shumin(Zhuzhou CRRC Times Electric Co.,Ltd.;CRRC Zhuzhou Locomotive Co.,Ltd.,Zhuzhou 412001,China)

机构地区：[1]株洲中车时代电气股份有限公司 [2]中车株洲电力机车有限公司,湖南株洲412001

出　　处：《电力机车与城轨车辆》2023年第1期72-76,共5页Electric Locomotives & Mass Transit Vehicles

摘　　要：为解决目前牵引系统网侧电路接地故障无法被精确检测的问题,文章提出了一种基于时间约束Petri网模型的实时诊断方法,介绍了牵引系统主电路的构成及工作原理,分析了传统网侧电路接地实时诊断的原理及不同工况不同模式下的接地故障特征,并基于时间约束Petri网的基本原理建立了网侧接地故障诊断模型。经案例验证,该方法可及时、准确地诊断出牵引系统网侧电路接地故障的类型。In order to solve the problem that the grounding fault of traction system line-side circuit can not be accurately detected, a real-time diagnosis method based on time constrained Petri net model is proposed. The structure and working principle of traction system main circuit are presented. The real-time diagnosis principle of traditional line-side circuit grounding fault, and the characteristics of grounding fault under different working conditions and modes are analyzed. Based on the basic principle of time constrained Petri net, a line-side grounding fault diagnosis model is established. The case proves that the method can diagnose the grounding fault type of traction system line-side circuit timely and accurately.

关 键 词：牵引系统 网侧电路 接地故障 PETRI网 实时诊断 

分 类 号：U260.13[机械工程—车辆工程]