AC/DC power supply system rapid identification system and method
An identification method, AC and DC technology, applied in the measurement of current/voltage, motors, electric vehicles, etc., can solve the problems of complex structure, difficult to identify quickly and accurately, achieve high portability, reduce system costs, and improve the level of intelligence Effect
Active Publication Date: 2020-12-18
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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[0010] The purpose of the present invention is to provide a system and method for fast identification of AC and DC power supply systems, to solve the problem that the existing pantograph-catenary power supply system detection device has a complex structure and is difficult to identify quickly and accurately
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[0075] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the invention, not to limit the invention.
[0076] At present, multi-stream electric locomotives are widely used. Aiming at the problem of how to quickly identify multiple pantograph-catenary power supply systems for electric locomotives, the present invention proposes a system and method for quickly identifying AC and DC power supply systems.
[0077] The working principle of the high-voltage traction system of the EMU is as follows: the pantograph introduces the catenary voltage into the traction transformer for step-down and then sends it to the traction converter. Three-phase alternating current is supplied to the traction motor for traction operation. ...
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The invention relates to the field of rail transit electrical equipment, in particular to an AC / DC power supply system rapid identification system and method. The invention provides the AC / DC power supply system rapid identification system, and the system comprises a network voltage transformer for detecting and acquiring a network voltage synchronization signal of a bow net and outputting the network voltage synchronization signal to a traction converter; a voltage sensor which is used for detecting and acquiring a net voltage synchronizing signal of the pantograph-catenary and outputting thesignal to the traction converter; and a traction converter which is used for respectively calculating a corresponding network voltage effective value and a network voltage average value according tothe network voltage synchronizing signals acquired by the network voltage transformer and the voltage sensor, and judging the pantograph-catenary power supply system according to the ratio of the network voltage effective value to the network voltage average value. According to the invention, the system can be rapidly and accurately identified by the electric locomotive in a plurality of periods,the switching of the locomotive power supply system is automatically completed according to the identification result, the on-site application requirements are met, and the application prospect is good.
Description
technical field [0001] The invention relates to the field of rail transit electrical equipment, and more specifically, to a system and method for quickly identifying AC and DC power supply systems. Background technique [0002] Various pantograph-catenary power supply systems are used in railway power supply systems in many countries and regions. For example, the South African railway traction power supply system adopts two power supply systems of AC25kV / 50Hz and DC3kV. [0003] The European railway traction power supply system is even more diverse. The railway traction power supply system in Italy and Belgium is DC3kV, the railway traction power supply system in France and Germany is AC25kV / 50Hz, and the railway traction power supply system in Switzerland is 15kV / 16.7Hz. [0004] There are three types of systems for railway traction power supply systems in the United States, namely 12kV / 60Hz, 12.5kV / 60Hz and 25kV / 60Hz. [0005] Japan's railway traction power supply system ...
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IPC IPC(8): G01R15/18G01R19/02G01R19/165B60L15/00
CPCB60L15/007G01R15/18G01R19/02G01R19/16547Y02T10/64
Inventor 尚敬邹东海徐绍龙甘韦韦郭维周杨黄浩陈科魏超田乐王俊然马晓东
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD