摘要
简要阐述典型的地铁直流牵引供电系统框架泄漏保护的工作原理及设置方案,经过分析,指出该框架泄漏保护方案存在误动、拒动、缺乏选择性的缺陷,提出了"取消电压元件跳闸,双OVPD(钢轨电位限制装置)冗余配置"的优化设计方案。
The paper briefly describes the working principle and the setting scheme of the frame leakage protection of metro DC traction power supply system, and analyzes the defects of the system, including the error of the leakage protection scheme, and the lack of selectivity. It puts forward the optimization design solution of cancellation of voltage tripping, Dual OVPD （Rail Potential Limit Device） and redundancy configuration.
出处
《现代城市轨道交通》
2015年第6期1-3,8,共4页
Modern Urban Transit
关键词
地铁供电
框架保护
OVPD
优化设计
metro power supply, frame protection, OVPD, optimization design
