A new type of grounding system, automatic control system and control method for high-speed trains

Abstract

The invention discloses a new grounding system, an automatic control system and a control method for a high-speed train. The new grounding system includes a catenary, a high-speed train and a steel rail. Working grounding device; the equipotential connection line of the motor car and the adjacent trailer or motor car is equipped with a resistance-capacitance connection device, and the bottom end is equipped with a bogie, and at least one protective grounding device is provided between the car body and the shaft end; the trailer Including the train locomotive and the transformer car, the interior of the transformer car is equipped with a traction transformer, and the neutral point of the primary side at the bottom is provided with a working grounding point, and its top is electrically connected with the catenary; An electrically connected working grounding device; the invention solves the problems in the prior art of uneven distribution of protection grounding current, excessive current in the body of the front and rear cars, and high surge overvoltage of the car body.

Description

technical field [0001] The invention belongs to the technical field of grounding systems, and in particular relates to a new grounding system for high-speed trains, an automatic control system and a control method. Background technique [0002] The high-speed train adopts distributed power. After the traction current leaks into the rail through the wheel set, it is easy to flow back to the car body through the protective grounding point, and a local circulation is formed between each section of the car body through the equipotential connection line, so that the train near the working grounding point The protective grounding current of the body and the front and rear car bodies is relatively large. The working grounding of existing high-speed trains adopts direct grounding, and the protection grounding adopts direct grounding or grounding through grounding resistors. Although the grounding mode of grounding resistors can restrain the grounding current from entering the car bo...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above-mentioned deficiencies in the prior art, the present invention proposes a new type of grounding system, automatic control system and control method for high-speed trains, which are used to solve the problems of uneven distribution of protection grounding current and excessive current of the front and rear trains existing in the prior art. And the problem of high surge overvoltage of the car body

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