Power supply mode conversion system for rail transit contact network

Abstract

The invention discloses a power supply mode conversion system for a rail transit contact network, belongs to the technical field of rail transit, and provides the following scheme: a direct-current voltage conversion module converts an alternating-current power supply transmitted by a power plant through a power transmission line into direct-current voltage, outputs the direct-current voltage to a direct-current cable, and outputs the direct-current voltage to the contact network through the direct-current cable; an alternating-current voltage conversion module converts alternating-current power transmitted by a power plant through a power transmission line into alternating-current voltage and outputs the alternating-current voltage to the contact network; a first lockout control module carries out primary lockout control on a direct-current voltage output line and an alternating-current voltage conversion output line of the direct-current cable so as to control output of the direct-current voltage or the alternating-current voltage. a second locking control module performs secondary locking control on the line for outputting the direct current voltage and the line for converting and outputting the AC voltage so as to control the direct current voltage or the AC voltage to be output to a metro static adjusting line or a metro dynamic adjusting line of the contact network. According to the technical scheme, the convenience of rail transit power supply is improved.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a power supply system conversion system for a rail transit catenary. Background technique [0002] The rail transit power supply system is the source of power for urban rail transit operations. It is responsible for the supply and transmission of electric energy, power supply for electric train traction and provide power and lighting power for stations, sections, depots, control centers and other buildings. It is one of the important electromechanical equipment systems in urban rail transit engineering. It is responsible for the important task of providing electric energy for electric trains and various operating equipment. The development history of traction power supply technology and vehicle technology is closely related and directly connected with the development history of urban rail transit technology. The reliability and safety of urban rail power supply system direc...

AI Technical Summary

Problems solved by technology

When there are two power supply systems and trains need to run on the lines of these two power supply systems, trains with a single power supply system cannot meet the operational needs

The original power supply system needs to be transformed to meet the power supply needs of different trains. At the same time, the train integrates a standard system that can meet both DC power supply and AC power supply to meet the requirements of train operation on rail transit, but this is convenient. Will lead to an increase in construction costs and construction time

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