摘要高速铁路作为快捷舒适、超大运量、低碳环保的运输方式已经成为世界铁路发展的重要趋势，是解决客运供需矛盾的重要手段之一。高速铁路能否安全运行不仅直接关系到经济社会健康快速发展，更关系到广大人民群众生命财产安全。因此，研究高速铁路牵引供电系统故障预警具有重大的意义。

论文先是介绍了牵引供电系统的构成及供电方式，通过比较选择了AT供电方式；然后讲述了各类牵引供电系统故障，着重突出了牵引网线路故障，并从Petri网技术入手分析、诊断故障；最后分析了恶劣天气对接触网的影响，针对接触线风偏量、积冰量与合成负载，使用风险严重程度函数来描述风险，从而达到预警的目的。65199

毕业论文关键字    牵引供电系统  故障预警  AT供电方式  Petri网  恶劣天气  风险评估

毕业设计论文外文摘要

Title   Research on Early Warning for Power Supply System  of High-speed Railway                                         

Abstract

As the quick，comfortable，super large traffic volume and environmental protection transportation mode，high-speed railway has been the important trend of world railway development，which is also an important method to solve the contradiction between supply and demand of passenger transport．

Whether high-speed rail can run safely not only directly concerns the healthy and rapid development of economy and society, but also concerns the broad masses of the people of the safety of lives and property,further more, it  has great significance on research on predictive failure for power supply system of high-speed railway.

Firstly, paper introduces the structure of the traction power supply system and the modes  of power supply. By comparing ,AT power supply mode is selected. Then paper tells all kinds of failure of traction power supply system , highlighting the traction line failure, and analyses, diagnoses failure through Petri net. Finally,it analyses the impact of severe weather to contact line，calculating the wind deviating distance,the synthetic burden, achieving prediction through risk evaluation.   .

Keywords  Traction Power Supply System    Early Warning   Petri Net

          AT Power Supply Mode    Severe Weather   Risk Evaluation

目次

1 绪论 1

1.1 课题研究的背景和意义 1

1.2 国内外发展现状 1

1.3 本文内容的介绍 2

2 高速铁路供电系统 3

2.1 高速铁路供电系统概述 3

2.2 牵引供电系统构成 3

2.3 牵引供电系统供电方式 3

3 牵引传动设备故障及检测技术 9

3.1 牵引传动设备故障 9

3.2 牵引传动设备故障检测技术 9

4 牵引网线路故障及检测技术 13

4.1 牵引网线路故障 13

4.2 Petri网 13

4.3 基于Petri网故障信息诊断的算例 16

5 天气对高速铁路接触网影响的预测 21

5.1 接触网简介