Research On Online Monitoring System Of The Catenary Security Status Based On Catenary Tension And Wire Temperature

:Our country is vigorously promoting the development of the high-speed electrified railway at present. Catenary is an important equipment of its power rail traction system. Good contact between contact line and pantograph is the key to ensure the quality of electric locomotive in flow. And catenary work in the bad natural environment, the space position, connection status is dynamic, and the probability of failure is bigger. Therefore, strengthening the catenary of on-line monitoring, understand the current state of work, timely find out the problems and potential risks, to ensure the safe operation of high-speed electrified railway has the vital significance.This paper on the study of the catenary running state monitoring, on the basis of the content and the research status at home and abroad, briefly analyzed the catenary compensation device and the contact wire tension and the relation of contact line between the important influence to the catenary security status, put forward by monitoring compensation device object tuo acceleration and ratchet wheel angular deviation both indirect parameter for safe state changes to reflect the catenary, at the same time online clip to install wireless temperature sensor can be used for monitoring broken wires in extreme situations.According to the plan for monitoring and requirements, completed the catenary security status based on tension and temperature on-line monitoring system for the design of the prototype, using high-precision sensor to drop tuo acceleration, ratchet wheel angular deviation and clamp temperature acquisition of three parameters using DSP as the core processor for data processing, and through the3G wireless communication technology to the collected data real-time transmission to the monitoring center in the PC software. Under the condition of field work, power supply module using solar panels to power supply.Finally, shanghai-kunming passenger dedicated line in nanchang section of on-site installation of the monitoring system prototype test, the analysis of monitoring to the large number of data processing, proved that this system can run stably for a long time to verify the feasibility of monitoring solution.