DC high-voltage box, dual-standard high-voltage traction system and electric train unit
A high-voltage box, direct current technology, applied in the electrical field, can solve problems such as failure to guarantee the life and stability of high-voltage systems, breakdown or flashover of high-voltage equipment, and reduced reliability of high-voltage systems, so as to save the area occupied by the roof and avoid Adverse effects, effects of reducing wind noise and drag
Active Publication Date: 2021-07-16
CRRC TANGSHAN CO LTD
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Problems solved by technology
[0004] However, the speed of the next generation of high-speed EMUs will reach more than 400 kilometers per hour, with the characteristics of wide operating area span and complex natural environment
If the above-mentioned AC / DC high-voltage system is used, the high-voltage equipment scattered on the roof will be exposed to the air for a long time. Affected by environmental factors such as smog, rain and snow, the high-voltage equipment is prone to breakdown or flashover, making the high-voltage The reliability of the system is reduced, and the life and stability of the high-voltage system cannot be guaranteed
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[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0053]The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects and not necessarily Describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of practice in sequences other than ...
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The invention provides a DC high-voltage box, a dual-standard high-voltage traction system, and an electric train set. The input end of the DC high-voltage box circuit is connected to the pantograph through a selection isolation switch, and the first output end is connected to the DC traction system of the train, so that the train It can support DC power supply mode. Furthermore, by setting the circuit in the box, the high-voltage devices in the circuit will not be exposed to the air, thereby avoiding the adverse effects of environmental factors on the high-voltage equipment and improving the reliability and service life of the high-voltage system , at the same time, it can save the area occupied by the roof and improve the effective utilization of the space in the car; moreover, it can reduce the wind noise and resistance when the train is running, and improve the aerodynamic performance.
Description
technical field [0001] The invention relates to the field of electrical technology, in particular to a DC high-voltage box, a dual-mode high-voltage traction system and an electric train set. Background technique [0002] The function of the train high-voltage system is to obtain electric energy from the pantograph for the train and realize electric energy distribution, transmission and related protection functions. In order to meet the needs of cross-border interconnection, intercity / urban EMUs with AC and DC dual-mode capabilities have emerged at home and abroad. The speed of these EMUs is usually below 160 kilometers per hour. By setting up dual-mode AC-DC high-voltage systems for trains , so that the train can meet the operation requirements of different grid systems. [0003] In the prior art, the AC-DC high-voltage system supporting dual systems generally includes a plurality of high-voltage equipment, and the high-voltage equipment is scattered on the outside of the ...
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IPC IPC(8): B60L3/00
CPCB60L3/00
Inventor 崔玉萌晏志飞陈保霖韦永全张杰査小菲周立凤刘宇李颖华刘钊
Owner CRRC TANGSHAN CO LTD