Free neutral-section passing device of train

Abstract

The invention discloses a free neutral-section passing device for a train. The free neutral-section passing device is formed by connecting an electric neutral section of an overhead line system and a switching control compartment arranged on a line side through a high-voltage cable and an optical fiber. Integrated optical fiber sensor probes are mounted between a carrier cable and a contact line at a suspension point of the overhead line system, a contact line is lifted by a head bow of the train to acquire a bow position signal, the bow position signal required by the driving direction is input into a control system by setting the distance between the probes and assisting contacts by virtue of vacuum switches, and after the resistance value of a controllable rheostat is adjusted from zero to maximum, the program-controlled two vacuum switches supply power through the neutral overhead line system in a commutation mode, and the resistance value of the controllable rheostat is adjusted from the maximum value to zero after current limiting is finished. The device belongs to a department of the overhead line system, and the device operation is not associated with any department, so that standardized operation management is facilitated; an overhead line system department automatically solves the problem of free neutral section passing of the train, and a driver does not have a neutral section passing concept; and the device is low in cost, the electric split-phase structural form of the overhead line system and the construction cost are not changed, the application range is not limited, and application and popularization are facilitated.

Description

technical field [0001] The invention belongs to the automatic phase separation technology of electrified railway, and relates to an electric phase separation automatic conversion device integrated with equipment of multiple departments in Japan, especially a free train phase separation device belonging to a catenary department. Background technique [0002] In the research report No. 037 of the Institute of Science and Technology Information of the Ministry of Railways, "Research on Traction Power Supply Systems for High-Speed ​​Railways Abroad", page 31, in October 2001, the Railway Electrification Committee of the China Railway Society, "Electrified Railways Automatically Excessive On page 44 of the Proceedings of the Academic Conference "Phase Technology", the Japanese electric phase splitting automatic conversion device is composed of catenary electric phase splitting, normally closed and normally open vacuum switches and control systems in substations or partitions, and ...

AI Technical Summary

Problems solved by technology

[0005] The track signal is not related to the current-limiting system, and the current-limiting resistor cannot be connected in series to the power supply circuit of the main transformer of the locomotive before the load is off, and the power supply circuit of the main transformer of the locomotive can not be ensured. It is easy to generate operating overvoltage and damage the insulation of the main transformer. Failure; the device starts running when any vehicle passes by; the overall structural form of equipment integration in multiple departments is not conducive to standardized operation management; occupying space in the station, electric locomotives need to be equipped with a current limiting system, expensive signal acquisition equipment, high investment costs, only applicable Electric locomotives equipped with a current limiting system are not conducive to popularization and application

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