Online Monitoring System for Electrification Status of Neutral Section of OCS Based on Single-end Measurement
Abnormal electrification of neutral sections of the railway overhead contact system(OCS)is a major safety hazard in the OCS operation.Based on the voltage induction principle,voltage changes in the neutral section of OCS are measured in real time and the measured data are transmitted to the data acquisition device in real time through the ZigBee low-power wireless module.After receiving the pulse duration values from multiple voltage acquisition units,it calculates the current voltage value in real time using the appropriate algorithm.Then,the electrification status of the OCS neutral section is transmitted to the OCS operation and maintenance monitoring system in real time over the 4G/5G network.In this way,the electrification condition of the OCS neutral section is accurately diagnosed and analyzed.Compared with the conventional online inspection of voltage transformers,voltage induction errors are large.However,in terms of the safe operation of OCS,cost efficiency,and application performance,the inspection by voltage induction can accurately assess the electrification status of the OCS neutral section in real time,and quickly activate alarms,ensuring safe and reliable railway operation.
OCSneutral sectionlive-line inspectionsingle-end inductionmonitoring system
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