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Rail vehicle ultrahigh voltage overcurrent fault detection device and method

A detection device and a technology for overcurrent faults, which are used in measurement devices, fault locations, and electrical devices in testing and transportation, and can solve problems such as difficulty in locating and detecting UHV overcurrent faults.

Inactive Publication Date: 2019-08-16
CRRC QINGDAO SIFANG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The present invention is used to solve the problem that UHV overcurrent faults are difficult to locate and detect, and provides a rail vehicle UHV overcurrent fault detection device and method

Method used

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  • Rail vehicle ultrahigh voltage overcurrent fault detection device and method
  • Rail vehicle ultrahigh voltage overcurrent fault detection device and method
  • Rail vehicle ultrahigh voltage overcurrent fault detection device and method

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Embodiment Construction

[0020] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] In general, the present invention provides a rail vehicle UHV overcurrent fault detection device, the device includes two pantographs, each pantograph is connected with a current sensor and a main transformer, between the two current sensors A third current sensor is connected in parallel. Wherein, a high-voltage isolation switch is arranged at one end of the third current sensor.

[0022] Wherein, the current sensors directly connected to each pantograph are respectively a first current sensor and a second current sensor, and the rear ends of the first sensor and the second sensor are respectively connected in parallel with a third current sensor. The first curre...

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Abstract

The invention provides a rail vehicle ultrahigh voltage overcurrent fault detection device and method. The device comprises two pantographs , each pantograph is correspondingly connected with a current sensor and a main transformer, and a third current sensor is connected between two current sensors in parallel; a main circuit breaker is connected between the current sensor correspondingly connected with each pantograph and the main transformer; two ends of the third current sensor are connected between the main circuit breakers and transformers between two pantographs in parallel; one end ofthe third current sensor is serially connected with a high-voltage isolation switch; the detection device further comprises a control module for identifying the pantograph in a photograph-lifting state, and positioning a fault region through a logic relation according to a collected overcurrent signal at a ultrahigh voltage loop. Through the device and method provided by the invention, the ultrahigh voltage overcurrent fault region can be accurately and quickly positioned, and the train driver is prompted to perform corresponding operation according to the logic relation, and the running security and reliability of the train are improved.

Description

technical field [0001] The invention relates to the technical field of train fault detection, in particular to a rail vehicle UHV overcurrent fault detection device and method. Background technique [0002] During the normal operation of the train, the high-voltage power supply system is the power source of the rail vehicle and a vital part of the train. The high-voltage power supply system obtains AC25kV high-voltage alternating current from the high-voltage catenary, provides power for vehicle traction equipment and other auxiliary facilities, and performs detection and protection. The safety and reliability of its operation are directly related to the normal operation of the train. [0003] In particular, with the rapid development of domestic intercity and urban rail transit, in order to ensure the safe, efficient and reliable operation of rail vehicles, the reliability requirements for the performance of rail vehicle components are also increasing. [0004] AC25kV rail...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08G01R31/00G01R19/165
CPCG01R31/086G01R31/006G01R19/16547Y04S10/52
Inventor 许万涛王天宇高超绪刘钦生王洪凯
Owner CRRC QINGDAO SIFANG CO LTD
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