摘要
机车过锚段关节式电分相出现电弧会产生过电压,使设备绝缘、机车和人身安全等受到巨大威胁。本文分析了机车过分相过程中产生电弧的四个位置,并绘制了其等效电路。并通过PSCAD/EMTDC仿真软件对机车过分相过程进行仿真建模,研究过分相过电压的产生机理,提出在中性线与钢轨间加装并联电容抑制过电压的措施,结果表明安装抑制装置后过电压最大幅值降低,抑制效果明显。
The overvoltage of arc arrester is produced when electric locomotive passes the electrical sectioning with insulated overlap,making the insulation of the equipment,the safety of locomotive and person in great danger. In this paper,it is analyzed the four positions and causes of arc when electric locomotive passes neutral section and the equivalent circuit is drawn. The simulation model is established by PSCAD/EMTDC simulation software,and the process of locomotive over-phase is simulated. The purpose of this research is to study the mechanism of production of overvoltage when electric locomotive passing the electrical sectioning and suppression measures that install parallel capacitors between neutral and rail is put forward. As a result,the maximum amplitude of the overvoltage is reduced after installation of the suppression device.
出处
《高速铁路技术》
2017年第5期39-42,共4页
High Speed Railway Technology
关键词
电分相
电弧
暂态过程
过电压
electrical sectioning
arc arrester
transient process
overvoltage
