Electrified railway through-type traction power supply system
A traction power supply system, electrified railway technology, applied in electric braking system, electrical components, railway transportation, etc., can solve the problem of active power and reactive power traction network voltage fluctuation, instrument measurement accuracy and normal communication impact, natural resources difficult Fully utilized and other issues, to achieve the effect of strong substitutability, easy safety redundancy design, and easy system maintenance
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[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0026] figure 1 A feed-through traction power supply system for electrified railways proposed by the present invention includes connecting transformer CT, three-phase MMC rectifier Rec, DC bus, single-phase MMC inverter Inv of traction substation, single-phase step-down transformer SDT, railway traction network. The three-phase MMC rectifier Rec is connected to the a, b, and c phases of the three-phase public power grid through the connection transformer CT, and the output DC side is connected to the DC bus, which is connected to the traction substations SS1, SS2, ..., SSn along the railway line. The single-phase MMC inverter Inv is connected to the input end, and its output single-phase alternating current is connected to the primary winding of the step-down transformer SDT. The secondary side of the step-down transformer SDT outputs ...
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