Train and insulation monitoring device and method thereof

Abstract

The invention discloses a train and an insulation monitoring device and method thereof. The device comprises a first subcircuit, a second subcircuit, a bidirectional power supply, a current detector, and an insulation monitoring device. The first subcircuit having a first resistor is connected with one pole of a train high-voltage loop. The second subcircuit connected with a train body has a second resistor. The bidirectional power supply is connected with the first subcircuit and the second subcircuit. The current detector is used for detecting a first current flowing through the second resistor when the bidirectional power supply works in a first direction and is used for detecting a second current flowing through the second resistor when the bidirectional power supply works in a second direction The insulation monitoring device is used for obtaining an insulation resistance value of the train according to the resistance value of the first resistor, the resistance value of the second resistor, the detection value of the first current, and the detection value of the second current. Therefore, the insulation resistance changing situation of the train can be monitored in real time. Moreover, the circuit structure becomes simple and the operation becomes convenient; and the security of the train can be improved.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a train insulation monitoring device, a train with the insulation monitoring device and a train insulation monitoring method. Background technique [0002] In related technologies, the high-voltage circuit of the train is not connected to the train body, that is, the high-voltage circuit and the train body are suspended. When the insulation resistance between one pole of the high-voltage circuit (high-voltage positive pole or high-voltage negative pole) and the body of the train body drops, if the human body contacts the other pole of the high-voltage circuit of the train (high-voltage negative pole or high-voltage positive pole), and the insulation between the human body and the train body If the measures are not perfect, it is easy to cause personal injury and there are potential safety hazards. However, the disadvantage of the related technology is that the insulation co...

AI Technical Summary

Problems solved by technology

When the insulation resistance between one pole of the high-voltage circuit (high-voltage positive pole or high-voltage negative pole) and the body of the train body decreases, if the human body contacts the other pole of the high-voltage circuit of the train (high-voltage negative pole or high-voltage positive pole), and the insulation between the human body and the train body When the measures are not perfect, it is easy to cause personal injury and there are potential safety hazards

However, the shortcoming of the related technology is that the insulation condition of the whole train cannot be effectively monitored.

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