Comprehensive stray current monitoring system

Abstract

The invention discloses a comprehensive stray current monitoring system which comprises a rail-ground insulation monitoring screen, a station-level monitoring device and measurement sensors. The rail-ground insulation monitoring screen realizes output and acquisition of rail-ground transition resistance measurement signals and data operation analysis. The rail-ground insulation measurement sensors are mounted at test points along a running rail, measure the polarization potential, the potential to ground of the steel rail and the leakage current of the steel rail in each measurement partition, and transmit the measurement data to the station-level monitoring device. The station-level monitoring device collects polarization potentials, steel rail to ground potentials and steel rail currents in the measurement subareas in real time through the rail-ground insulation measurement sensors, and transmits measurement data of the station to the rail-ground insulation monitoring screen, so that the rail-ground monitoring screen analyzes and calculates the data of the measurement subareas. According to the invention, the test results and variation trends of the polarization potential, the steel rail potential and the rail-ground transition resistance of a measurement section can be comprehensively analyzed, the condition of ground insulation of the steel rail in the monitoring section is judged, and an effective basis is provided for operation and maintenance of a subway.

Description

technical field [0001] The invention relates to the technical field of urban rail transit, in particular to a stray current comprehensive monitoring system. Background technique [0002] At present, my country's transportation construction is in a stage of rapid development, the process of urban modernization is accelerating, the urban population base and the number of motor vehicles are increasing sharply, and most cities are facing a series of problems such as traffic congestion. Vigorously developing urban rail transit is the policy of urban public transport development and the best choice to solve urban traffic congestion. [0003] my country's first subway line, Beijing Subway Line 1, was completed in 1969. Although the development of urban rail transit in my country started relatively late, after half a century of development, as of December 31, 2020, 44 cities in my country have opened rail transit. Transportation, the operating mileage of the line is 7,715.31 kilomet...

AI Technical Summary

Problems solved by technology

[0036] The disadvantages of the existing technology: the measurement data is single, the error is large, the arguments of the test conclusion are not sufficient, and it is difficult to make corresponding decisions based on the test results; the test data is not correlated and verified, and the accuracy of the measurement results is difficult to be guaranteed. The conclusions are not convincing enough, the guidance and suggestions are not targeted, and the guiding significance for operating personnel is greatly reduced

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