直流系统框架保护技术在地铁工程中的应用

Application of DC System Framework Protection Technology in Subway Engineering

阐述地铁直流牵引供电系统的构成,以及框架保护的原理及作用,包括电流型框架保护、电压型框架保护。分析钢轨电位限制装置和排流柜对框架保护的影响,探讨框架保护动作的应急处理方法。

This paper expounds the composition of the subway DC traction power supply system,as well as the principle and function of frame protection,including current type frame protection and voltage type frame protection.It analyzes the impact of rail potential limiting devices and drainage cabinets on frame protection,and explores emergency response methods for frame protection actions.