牵引变电所是牵引供电系统主要环节之一,其主设备故障将造成供电中断,影响铁路正常运营。本文分析了设备在线监测技术的必要性与基本原理、监测方案,对国内外技术现状进行了阐述,并对技术发展进行了展望。 Traction substation traction power supply system is one of the main aspects of its main equipment failure will result in interruption of power supply, affecting the normal operation of the railway. This paper analyzes the necessity and basic principle of equipment on-line monitoring technology, monitoring program, describes the status quo of technology at home and abroad, and prospects the development of technology.