Overcurrent fault diagnosis system, method and train

An overcurrent fault diagnosis system technology, applied in the direction of measuring current/voltage, measuring devices, instruments, etc., can solve problems affecting the operation safety of EMUs, difficult faults, and failure to diagnose and locate high-voltage bus overcurrent faults, etc., to achieve The effect of improving diagnosis and processing efficiency, improving safety, and facilitating timely processing of faults

Pending Publication Date: 2019-04-16
CRRC QINGDAO SIFANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, it is impossible to diagnose and locate the overcurrent fault of the high-voltage bus during the driving process, and it is difficult to deal with the fault in a timely and effective manner, which seriously affects the operation safety of the EMU.

Method used

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  • Overcurrent fault diagnosis system, method and train
  • Overcurrent fault diagnosis system, method and train
  • Overcurrent fault diagnosis system, method and train

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0039] see figure 1 , which is a schematic structural diagram of an overcurrent fault diagnosis system provided in this embodiment.

[0040] Such as figure 1 As shown, the overcurrent fault diagnosis system provided in this embodiment includes: a control device 101 , a first current monitoring device 102 , a second current monitoring device 103 and a third current monitoring device 104 .

[0041] see figure 2 , which is a schematic diagram of the circuit connection of the overcurrent fault diagnosis system. Such as figure 2 As shown, the first current monitoring device 102 , the second current monitoring device 103 and the third current monitoring device 104 are respectively connected to the control device 101 in communication. The first current monitoring device 102 is located on the main road where the first pantograph is located; the second current monitoring device 103 is located on the branch from the first pantograph to the second transformer and the branch from th...

no. 2 example

[0053] see image 3 , which is a schematic structural diagram of an overcurrent fault diagnosis system provided in this embodiment.

[0054] Such as image 3 As shown, the overcurrent fault diagnosis system provided in this embodiment includes: a control device 101 , a first current monitoring device 102 , a second current monitoring device 103 , a third current monitoring device 104 and a high voltage isolation switch 105 .

[0055] see Figure 4 , which is a schematic circuit connection diagram of the overcurrent fault diagnosis system provided in this embodiment. Such as Figure 4 As shown, the first current monitoring device 102, the second current monitoring device 103, the third current monitoring device 104, and the high-voltage isolation switch 105 are respectively connected to the control device 101 in communication; the first current monitoring device 102 is located at the place where the first pantograph is located. On the main road; the second current monitorin...

no. 3 example

[0077] see Figure 5 , which is a flow chart of the method for diagnosing an overcurrent fault provided in this embodiment.

[0078] Such as Figure 5 As shown, the overcurrent fault diagnosis method provided in this embodiment includes:

[0079] S501: When the first pantograph is in the working state, judge whether an overcurrent fault has occurred in the main circuit where the first pantograph is located based on the first current result collected by the first current monitoring device, and determine whether an overcurrent fault has occurred on the main circuit where the first pantograph is located, and use the first current result collected by the second current monitoring device The second current result judges whether an overcurrent fault occurs in the common branch of the branch from the first pantograph to the second transformer and the branch from the second pantograph to the first transformer; the first current monitoring device is located at the first The main road...

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Abstract

The present invention discloses an overcurrent fault diagnosis system, an overcurrent fault diagnosis method and a train. The system comprises a control device and three current monitoring devices; the system finally diagnoses whether an overcurrent fault occurs on a high-voltage bus-bar during a training travel process according to the current results of the different positions of the high-voltage bus-bar and the working states of two pantographs, and can locate the overcurrent fault, and therefore, the timely processing of the fault can be facilitated, the improvement of the diagnosis and processing efficiency of the overcurrent fault of the high-voltage bus-bar of multiple unit trains can be facilitated, and the safety of train travel can be improved.

Description

technical field [0001] The present application relates to the technical field of driving fault diagnosis, in particular to an overcurrent fault diagnosis system, method and train. Background technique [0002] The EMU is an important part of the rail transit system, and its safety, reliability and efficiency directly affect the operation of the rail transit system. The EMU is generally composed of multiple carriages, and there are two pantographs on the roof to obtain electric energy from the catenary. During actual operation, usually only one pantograph is raised to make it in working state, and the other pantograph is in standby state. The high-voltage bus overcurrent fault of the EMU train is one of the most serious faults during the operation of the EMU, and this fault increases the risk during the operation of the EMU train. [0003] At present, it is impossible to diagnose and locate the overcurrent fault of the high-voltage bus during the driving process, and it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/165
CPCG01R19/16538G01R19/16571
Inventor 侯小强许万涛刘力豪唐兆祥迟鹏飞
Owner CRRC QINGDAO SIFANG CO LTD
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