兼顾杂散电流防护的新型钢轨电位限制装置应用实施  

Application and Implementation of Novel Rail Over Voltage Protection Device Considering Stray Current Protection

作　　者：黄俊 李军 周航 陈昌邦 HUANG Jun;LI Jun;ZHOU Hang;CHEN Changbang(Nanning Rail Transit Co.,Ltd.,Nanning 530029,China)

机构地区：[1]南宁轨道交通集团有限责任公司,广西南宁530029

出　　处：《电工技术》2022年第10期84-86,共3页Electric Engineering

摘　　要：当前,国内城市轨道交通多采用钢轨电位限制装置(OVPD)来抑制钢轨电位,过高的钢轨电位通常引起OVPD频繁通断、长期合闸,导致杂散电流泄漏量明显增加。为此提出一种兼顾杂散电流防护的新型OVPD,并在南宁轨道交通1号线进行试点安装。测试、分析结果表明该新型OVPD不仅能实现钢轨电位抑制,还能有效减少杂散电流泄漏量。Currently, the over-voltage protection device(OVPD) are often used in urban rail transit in China to suppress the rail potential. Excessive rail potential usually causes frequently opening and closing, long-term closed state of OVPD, increasing the leakage of stray current. Therefore, a novel OVPD which compromises the stray current protection is proposed. The pilot installation was carried out in Nanning Rail Transit Line 1. The test and analysis results show that the new OVPD can not only suppress the rail potential, but also effectively reduce the leakage of stray current.

关 键 词：城市轨道交通 钢轨电位限制装置 杂散电流 可变电阻 电力电子技术 

分 类 号：U213[交通运输工程—道路与铁道工程]