Keywords: pantograph-catenary system, active control, 6C system, data fusion, UAV, fiber optic sensor.

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 high-speed 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.

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