本文结合中国高铁建设和运营的经验，从高速铁路牵引供电不同层面，系统地介绍了高铁牵引供电系统的一系列关键技术。同时，就目前牵引供电系统的发展现状，展望了新型供电技术、主动运营维护、节能与效能提升、检测监测等新技术，可为中国高铁牵引供电技术的发展与应用提供指导。

The theoretical analysis and key technologies for high-speed railway（HSR） TPSS are needed to be studied. Firstly，a series of key basic theories and technologies of high-speed railway TPSS are described in this paper. Meanwhile，on the present development situation of traction power supply system，the new technologies are prospect such as the new power supply technology，active operation and maintenance，energy saving and improve the efficiency of energy utilization and the detection and monitoring technology. This will provide guidance for the development and application of China high-speed rail traction power supply technology.