Short rail type electric sectioning structure

Abstract

The invention discloses a short rail type electric sectioning structure which comprises a first short rail, a second short rail, a corresponding first short rail and a corresponding section short rail, wherein the first short rail and the second short rail are separated from a contact rail on one inner side of a platform section, and the corresponding first short rail and the corresponding second short rail are separated from a contact rail on the other side. Electricity of each first short rail is supplied by a first direct current contactor, electricity of each second short rail is supplied by a second direct current contactor, the first short rail and the second short rail on each contact rail are in non-electric connection, the contact rail part except for the first short rail and the second short rail on each contact rail on the corresponding side are connected to power substations through cables respectively, and the power substations are connected with the first direct current contactors and the second direct current contactors on the contact rails of the corresponding sides through cables. The short rail type electric sectioning structure can uninterruptedly supply power to vehicles in normal operation, and when one power supplying section has electrical failure, the fact that adjacent power supplying sections can have electrical failure due to circuit conduction in the vehicles can be prevented.

Description

technical field [0001] The invention relates to a traction power supply system for urban rail transit and intercity rail transit, in particular to a short-rail electric segment structure capable of both short-term and long-term vehicle marshalling. Background technique [0002] The early subways used a rail-breaking electric section with a rail-breaking distance of 14m, which must be set in the idling zone before the vehicle enters the station. For vehicles with a single train as an independent traction unit, the early vehicles generally did not have regeneration. In the case of braking function, when the vehicle passes through the electric section of the 14m broken rail after the traction motor stops taking current in the coasting section of the station, generally there will be no large arc, which can basically meet the operation requirements, but the interior lighting will be short-term effects. [0003] Today's vehicles generally have a regenerative braking function. If...

AI Technical Summary

Problems solved by technology

The advantage of the second option is that it is not necessary to adjust the position of the short rail when the short-term and long-term vehicle marshalling is adjusted. The disadvantage is that the large-capacity DC contactor needs to be imported and the price is high; when the DC contactor and the cable connected to the short rail fail May cause vehicles to lose kinetic energy in the station, causing line blockage

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