Railway traction current unbalance monitoring method and system

Abstract

The invention provides a railway traction current unbalance monitoring method and system. The method includes the following steps that S1, the current of a railway circuit is collected in real time, and the 25HZ current and the 50HZ current are obtained through analysis of a current spectrum; S2, when the situation that the 25HZ current breaks at a moment is monitored, the 50HZ current in the broken current is detected, and if the 50HZ current at the moment is higher than a threshold value, interference current data is generated; and S3, the 25HZ current, the 50HZ current and the interference current data are monitored in real time and sent to a terminal. According to the railway traction current unbalance monitoring method, in a signal mechanical room, traction unbalanced current generated on the railway circuit in the running process of an electric locomotive is collected at a high speed by adopting the non-electric contract sensing technology, the digital signal processing technology and the computer and internet technology, the sampling positions and the sampling chances are selected reasonably, and the problems of difficult transmission, dispersed detecting positions and inconvenient management and maintenance usually caused by in-situ signal collecting and testing are solved.

Description

technical field [0001] The invention relates to the field of electrified railways, in particular to a method and system for monitoring unbalanced railway traction current. Background technique [0002] The unbalanced traction current of electrified railway is the unbalanced current generated on the two rails and the choke transformer that provides the traction current loop during the traction process of the electrified railway electric locomotive. The signals of electrified railways in my country use a large number of 25Hz phase-sensitive track circuits in stations. The track circuits are used to detect the situation of trains occupying track sections, and realize the safety control of signals, turnouts and routes through railway signal interlocking equipment to ensure the safety of railway traffic. , the track circuit is the main technical equipment of my country's electrified railway. The 25Hz phase-sensitive track circuit better solves the path of track occupancy detectio...

AI Technical Summary

Problems solved by technology

The 25Hz phase-sensitive track circuit better solves the path of track occupancy detection and locomotive 50Hz traction current return. Since the 25Hz track circuit and the traction return flow act on the same track section, the unbalanced traction current will interfere with the normal operation of the 25Hz track circuit , when the traction unbalanced current exceeds the specified value, it will cause the 25Hz track circuit relay to malfunction, and the consequences will have a serious impact on the safety and efficiency of railway traffic

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