Train, train power supply system and its leakage protection device
A technology of leakage protection device and power supply system, which is applied to emergency protection circuit devices, circuit devices, and automatic disconnection emergency protection devices, etc., can solve the problems such as the inability of trains to run, affecting the power supply of trains, etc., so as to improve safety and reliability. sexual effect
Active Publication Date: 2020-03-31
BYD CO LTD
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Problems solved by technology
Once there is a fault on the train side when the power grid is powered, such as a leakage fault, it will directly affect the power supply of the train, and may also cause the train to fail to run
Method used
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[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0039] The leakage protection device of the train power supply system, the train power supply system and the train according to the embodiments of the present invention will be described below in conjunction with the accompanying drawings.
[0040] In an embodiment of the present invention, the train power supply system includes a power grid 1 for supplying power to the train, and an on-board battery pack 2 for supplying power to the train, wherein the train may be a straddle-type monorail train.
[0041] figure 1 It is a schema...
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The invention discloses a train, a train power supply system and a leakage protection device thereof, wherein, the power supply system comprises a power grid for supplying power to the train and a vehicle-mounted battery pack; the leakage protection device comprises a first circuit breaker connected with a positive pole of the power grid; A first positive electrode contactor connected to the firstcircuit breaker and the train receiving positive electrode; A first negative electrode contactor connected to the grid negative electrode and the train receiving negative electrode; A second positiveelectrode contactor connected to the battery positive electrode and the train receiving positive electrode; A second negative electrode contactor connected to the battery negative electrode and the train receiving negative electrode; Includes a first leakage protection assembly of a controller, the controller can control the on-off of the circuit breaker and the contactors to realize the power supply of the electric network to the train or the power supply of the on-board battery pack to the train, When the electric network supplies power to the train, the controller can judge whether the high-voltage positive pole of the train has leakage or not, and the first circuit breaker can be controlled to be disconnected to realize leakage protection when the leakage occurs, thereby improving thesafety and reliability of the train operation.
Description
technical field [0001] The invention relates to the technical field of train power supply, in particular to a leakage protection device of a train power supply system, a train power supply system and a train. Background technique [0002] With the development of science and technology, my country's railways have entered the era of high-speed passenger transport, and trains have provided great convenience for people's travel. At present, the train is mainly powered by the grid, and mainly uses the DC trunk line power supply method. Once there is a fault on the train side when the power grid is powered, such as a leakage fault, it will directly affect the power supply of the train, and may also cause the train to fail to run. Contents of the invention [0003] The present invention aims to solve one of the technical problems in the above-mentioned technologies at least to a certain extent. For this reason, an object of the present invention is to propose a leakage protecti...
Claims
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IPC IPC(8): H02H3/32H02J9/06
CPCH02H3/32H02J9/061
Inventor 郭名扬李道林任林
Owner BYD CO LTD