A kind of electric locomotive high-voltage circuit natural isolation and double main break redundant circuit system
A technology for electric locomotives and high-voltage circuits, used in motor vehicles, electric vehicles, electric traction, etc., can solve problems such as locomotive accidents, and achieve the effect of improving reliability and environmental adaptability
Active Publication Date: 2019-02-26
FUKAIER XIAN ELECTRIC
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Problems solved by technology
[0003] The purpose of the present invention is to provide a natural isolation and dual main break redundant circuit system for the high voltage circuit of an electric locomotive, which solves the problem that the existing vacuum circuit breaker is prone to cause locomotive accidents after failure
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[0012] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0013] The structure of an electric locomotive high-voltage circuit natural isolation and double main break redundant circuit system provided by the present invention is as follows: figure 1 As shown, it includes the first pantograph 2 and the second pantograph 3 respectively located at the front and rear ends of the electric locomotive 1, and the first pantograph 2 and the second pantograph 3 are respectively connected to the first main circuit breaker 4 and the The incoming line end of the second main circuit breaker 5, the incoming line end of the first main circuit breaker 4 and the second main circuit breaker 5 are also connected with the first voltage transformer 6 and the second voltage transformer 7 correspondingly respectively, the first main circuit breaker The outlet terminals of the circuit breaker 4 and the second main circuit br...
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The invention discloses a natural isolation and double main-break redundant circuit system of a high-voltage circuit of an electric locomotive, comprising a first pantograph and a second pantograph respectively located at the front and rear ends of the electric locomotive, the first pantograph and the second pantograph. The pantograph is respectively connected to the incoming line ends of the first main circuit breaker and the second main circuit breaker, and the incoming line ends of the first main circuit breaker and the second main circuit breaker are also respectively connected to the first voltage transformer and the second main circuit breaker. For the voltage transformer, the outlet ends of the first main circuit breaker and the second main circuit breaker are connected in parallel to the transformer of the electric locomotive. The natural isolation of the high-voltage circuit of the electric locomotive and the redundant circuit system of double main break of the present invention is to install a "1+1" double main break structure circuit breaker on the electric locomotive, so that the front and rear pantographs of the locomotive can be connected to the two main breakers respectively. The circuit breaker is linked to realize the functions of natural isolation of the high-voltage circuit of electric locomotives and emergency treatment of faults, which can improve the reliability of the entire high-voltage system.
Description
technical field [0001] The invention belongs to the technical field of high-voltage electrical appliances for electric locomotives, and in particular relates to a high-voltage circuit natural isolation and dual main break redundant circuit system for electric locomotives. Background technique [0002] Vacuum circuit breakers are widely used in Shaoshan electric locomotives, Hexie electric locomotives and EMUs. Its main function is reflected in the fact that the main circuit breaker is the main switch for carrying, closing and breaking the load current and short-circuit current of the locomotive. It is one of the most important electrical appliances in the main circuit of the locomotive. Once the main circuit breaker fails, it will directly affect the normal operation of the locomotive. run, resulting in a locomotive accident. Contents of the invention [0003] The purpose of the present invention is to provide a natural isolation and double main break redundant circuit sy...
Claims
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IPC IPC(8): B60L3/00B60L9/00
CPCB60L3/0023B60L9/00B60L2200/26
Inventor 王少锋张超雷樊会娟李新卫朱海刚张佩李甲王盼惠建兴
Owner FUKAIER XIAN ELECTRIC