摘要
拉弧现象会造成供电质量降低、影响乘坐舒适性以及加剧离线率等一系列危害。为了提高电气化铁路供电系统的安全性和可靠性,基于拉弧的光学特性,利用紫外相机对弓网进行跟踪拍摄,并在Lab VIEW软件中结合图像预处理、边缘提取、直线提取等一系列数字图像处理技术,在列车运行过程中判断拉弧的产生并且实时计算单次拉弧的持续时间以及燃弧率。研究和试验结果表明:该方法能够有效检测拉弧的产生,精确计算拉弧持续时间及燃弧率,实现弓网拉弧的实时在线监测。满足电气化铁路工程运营及发展的需求。
Arc phenomenon can result in the loss of power supply quality,the impact of riding comfort and the increase of the offline rate. In order to improve the safety and reliability of electrified railway power supply system,this article detects the generation of the arc and calculates in real time the continuous time of the single pull arc and the arc rate during the operation of the train,based on the optical properties of arcs,the Pantograph-Catenary conditions tracked by ultraviolet camera,a series of digital image processing techniques including image preprocessing,edge extraction and linear extraction combined in Lab VIEW software. The research and test results show that this method can effectively detect the generation of arc and accurately calculate the arcing time and arc ignition rate to realize the real-time online monitoring of the Pantograph-Catenary Arc. This technique will meet the needs of electrified railway operation and development.
作者
吴琛
伍川辉
杨恒
卿云
WU Chen;WU Chuan-hui;YANG Heng;QING Yun(School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031,China)
出处
《铁道标准设计》
北大核心
2018年第9期145-148,共4页
Railway Standard Design
基金
国家自然科学基金项目(51475387)
