Review on Full Perception Intelligent Pantograph-Catenary System in Electrified Railways

High-speed railways have gradually shifted from the infrastructure era to the operation and maintenance era in China, which puts forward higher requirements for the safe and reliable operation of high-speed railway traction power supply system equipment.As a railway power transmission channel, the pantograph-catenary system is an important part of the traction power supply system.However, the operation has shown that most abnormal states come from the pantograph-catenary system (including contactors and pantographs).The Power supply safety monitoring system for highspeed railways (6C system) is a comprehensive system that can measure the dynamic and static geometric parameters related to the catenary and detect the faulty working status and running status of the components in the pantograph-catenary system.The active control of the pantograph can also effectively improve the current collection quality of the pantograph-catenary system.The paper provides a detailed introduction to the overall architecture of the 6C system, pantograph active control technologies, and pantograph active control simulation platform.Finally, combining multi-source data fusion, UAV monitoring, fiber optic sensors, and other technologies, a prospect is given for the full-sensing intelligent detection of pantograph-catenary on electrified railways.