Insulation detection systems for trains and trains

Abstract

The invention discloses a train and an insulation detection system for the train. The train is powered by a power grid, and the power grid includes a positive power grid busbar and a power grid negative busbar. The train includes a plurality of carriages, a train insulation detection device and a train controller. Each carriage includes: a carriage A positive bus, the positive bus of the carriage is connected to the positive bus of the power grid; the negative bus of the carriage, the negative bus of the carriage is connected to the negative bus of the power grid; the first current sensor connected between the positive bus of the carriage and the negative bus of the carriage; the load connected to the first current sensor ;Fault locating device connected between the positive busbar of the carriage and the negative busbar of the carriage; The train controller is used to start the fault locating devices in multiple carriages in turn when the train insulation detection device detects an insulation fault, and pass the fault locating devices in the carriages. The fault locating device locates the insulation fault, so that the location where the insulation fault occurs, such as a specific carriage and a specific load, can be accurately determined, thereby improving the reliability of the power supply of the train.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to an insulation detection system of a train and a train having the system. Background technique [0002] With the development of the times, most trains use electric energy as power. For example, the train power supply device can first convert the power supply of the grid into alternating current of about 860 volts, and then convert the alternating current into 600 volts of direct current before supplying the train, or it can be powered from 1500 volts. volts or 750 volts DC from the grid to supply the trains. Therefore, most trains run under the power supply of high-voltage electricity. In order to ensure the personal safety of equipment and passengers on the train, insulation testing is required after the train runs. [0003] In the related art, a current sensor is provided at the grounding point of the train power supply device to determine whether an insulation fault occurs. ...

AI Technical Summary

Problems solved by technology

However, the problems existing in the related technologies are that it is impossible to detect the insulation status of the electrical system of the complete vehicle accurately in time, it is impossible to judge the location of the insulation fault, and it is difficult to separate the faulty compartment.

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