Power supply system without passing neutral phases in whole journey of high-speed passenger transport line motor train unit

Abstract

The invention relates to a power supply system without passing neutral phases in the whole journey of a high-speed passenger transport line electric multiple units (EMU), and belongs to the field of power supply of high-speed EMU. A cantilever at the upper end of an anchoring section pillar is provided with two catenary wires, the catenary wires are connected with droppers, the droppers are connected with a single-phase alpha contact line and a single-phase beta contact line which are output from the secondary side of a traction transformer, the single-phase alpha and the single-phase beta are parallel, are insulated with each other, are input into the internal power supply system of the EMU through double-phase pantographs and are connected with a basic power supply unit TUB1 and a basic power supply unit TUB2 respectively, and the basic power supply unit TUB1 and the basic power supply unit TUB2 are separate with each other. No circuit breaker switch or neutral insulating section is needed to be arranged on the single-phase alpha and the single-phase beta, and no negative-sequence current generates in a three-phase high-voltage supply network. The invention further provides a circuit structure used for improving a CRH1-model 8-compartment EMU and a CRH5-model 8-compartment EMU into a 6-compartment EMU, a 10-compartment EMU, a 12-compartment EMU and a 16-compartment EMU recombined by two 8-compartment EMUs and for brake regenerative braking.

Description

technical field [0001] The power supply system of electrified high-speed passenger dedicated line is the power source to ensure the safe, stable and efficient operation of trains. It is responsible for safely taking power from the high-voltage power supply network and providing stable, continuous and reliable power supply to trains. It is one of the important infrastructures for electrified high-speed railways. The invention relates to a traction pantograph-catenary power supply system for high-speed trains, which is particularly suitable for the engineering technical field that the pantograph-catenary power supply system of CRH1 and CRH5 type EMUs does not have excessive phase separation and does not cause negative sequence current in the three-phase high-voltage power supply network. Background technique [0002] Electrified railway uses electric energy as the power source for the traction power supply of the train and the auxiliary power supply of the train. The inventor...

AI Technical Summary

Problems solved by technology

Due to the frequent opening and closing of the main circuit breaker, its service life is affected, investment and operating costs are increased, and the running speed of the train is also affected

Moreover, frequent switching will cause overvoltage, which will affect the electrical equipment of the train. During the switching process, ferromagnetic resonance may also occur, which will affect the reliability of automatic over-phase separation.

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