D-series high-speed train high-voltage system trunk line detection system

Abstract

The invention belongs to the technical field of D-series high-speed train high-voltage system fault detection, and provides a D-series high-speed train high-voltage system trunk line detection systemwhich is characterized in that one end of a CT1 is connected with an overhead line system through a pantograph, and the other end of the CT1 is electrically connected with the front end of a main circuit breaker; the rear end of the main circuit breaker is electrically connected with a roof isolation switch and a CT2 respectively; the roof isolation switch is electrically connected with one end ofa CT4; the other end of the CT4 is electrically connected with the CT4 of the other carriage; the CT2 is electrically connected with the primary side of a traction transformer; the working groundingreturn part of the traction transformer is electrically connected with a CT3; a signal processing module is used for collecting currents of CT1, CT2, CT3 and CT4, logic judgment is carried out according to the collected currents, the fault position and the corresponding fault removal instruction are determined, accordingly, the fault position and the corresponding fault removal instruction are judged, and fault expansion is avoided.

Description

technical field [0001] The invention belongs to the technical field of fault detection of a high-voltage system of an EMU, and in particular relates to a detection system for a main line of the high-voltage system of an EMU. Background technique [0002] The EMU mainly transmits the electric energy in the catenary to the vehicle through the pantograph, and transmits the high-voltage voltage in the vehicle to the relevant power supply equipment, thereby providing electric energy for the EMU. The safety protection of the high-voltage main line directly involves the operation reliability of the EMU, and prevents damage to the EMU caused by high-voltage faults. [0003] At present, the main line detection technology of the high-voltage system of the EMU sets the current detection device through the main line, through hardware signal detection, and through software calculation, so as to quickly determine the location of the fault point of the high-voltage main line, so as to real...

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a detection system for the main line of the high-voltage system of the EMU to solve the problem that the failure location cannot be accurately determined in the prior art. failure, or the risk of blowing out the catenary, resulting in the problem of electric shock to personnel

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