Novel grounding system for high-speed train, automatic control system and control method

Abstract

The invention discloses a novel grounding system for a high-speed train, an automatic control system and a control method. The novel grounding system comprises a contact network, a high-speed train and a steel rail, wherein the high-speed train comprises a trailer, a bullet train, a resistance-capacitance type connecting device, a protection grounding device and a working grounding device; the resistance-capacitance type connection device is arranged on an equipotential connecting line of the bullet train and the adjacent trailer or bullet train, a bogie is arranged at the bottom end of the resistance-capacitance type connection device, and at least one path of protection grounding device is arranged between the train body and a shaft end; the trailer comprises a train head and a transformer train, wherein a traction transformer is arranged in the transformer train, a working grounding point is arranged at a primary neutral point at the bottom end of the transformer train, and the topend of the transformer train is electrically connected with the contact network; three paths of working grounding devices which are electrically connected with the shaft end are arranged in parallel at the working grounding points; the novel grounding system solves the problems of uneven distribution of protection grounding current, overlarge current of head and tail train bodies and high surge overvoltage of the train body in the prior art.

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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