Train power supply leakage current detecting system and method

Abstract

The invention discloses a train power supply leakage current detecting system and method. The train power supply leakage current detecting system comprises a leakage current sensor, a monitoring board and an insulation detecting module, wherein the leakage current sensor is arranged on a DC (Direct Current) 600V power supply connector of a locomotive; the monitoring board is inserted to an AP (Access Point) slot position of a 6A system and is used for controlling the train power supply leakage current detecting system; the insulation detecting module is used for detecting the insulating strength of a DC 600V power supply output circuit. The train power supply leakage current detecting method comprises the steps: monitoring board control: controlling the working state of the train power supply leakage current detecting system; insulating detection: detecting the insulating strength of the DC 600V power supply output circuit; real-time monitoring: monitoring leakage current in real time, wherein the leakage current is generated by the locomotive; and detected data transmission and storage. By using the train power supply leakage current detecting system and method, grounding current generated in an electric system of the locomotive can be directly measured, the accuracy, safety and reliability of leakage current detection are improved, and the reliability and safety of train power supply are improved.

Description

technical field [0001] The invention relates to the field of train power supply monitoring of a locomotive on-board safety protection system, in particular to a train power supply leakage current detection system and a detection method. Background technique [0002] Since there are many electrical devices on passenger vehicles, any grounding of any device can cause a leakage current alarm, but it is difficult to separate the faulty vehicle if it is necessary to directly determine the location of the leakage current. For this reason, it is necessary to install a leakage current sensor on the DC600V prime mover connector between the locomotive-vehicle or vehicle-vehicle, and cooperate with the external supporting test instrument to directly display the real-time value of the leakage current and judge the front and rear positions of the fault . [0003] In the prior art, the Chinese invention patent with application number 201010148002.7 discloses a leakage current detection m...

AI Technical Summary

Problems solved by technology

[0004] The above existing technologies cannot detect the insulation status of the locomotive and vehicle electrical systems in a timely manner, thereby affecting the real-time monitoring of the locomotive and vehicle leakage current, and improving the accuracy and safety of the leakage current detection of the vehicle electrical system due to insulation reduction. There is room for further improvement in terms of reliability and

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