Electrified railroad homo-phase traction power supply system
A technology for traction power supply systems and electrified railways, applied in power lines, conversion equipment that can be converted to DC without intermediate conversion, transportation and packaging, etc., can solve the problem of low accuracy and reliability, affecting the safe operation of locomotives, trains Problems such as abnormal parking, to achieve the effect of reducing excessive phase separation, facilitating later maintenance, and simplifying the structure
Image
Examples
Embodiment 1
[0021] figure 1 As shown, a specific embodiment of the present invention is: in a same-phase traction power supply system for electrified railways, the traction transformer SS1 of the traction substation is a three-phase-two-phase transformer, and the primary sides of the traction transformer SS1 have three phases A and B , C are connected to the public power grid, and the α output phase and β output phase of the secondary side are connected in turn with a step-down transformer G, a single-phase converter M1, a DC capacitor C, and a single-phase converter M2; the α phase is The locomotive L supplies power, and its output voltage is 27.5kV; the output voltage of the β phase is 600-2000V.
[0022] figure 1 It is also shown that the traction transformer SS1 in this example is a Scott transformer.
Embodiment 2
[0024] figure 2 As shown, a specific embodiment of the present invention is: in a same-phase traction power supply system for electrified railways, the traction transformer SS1 of the traction substation is a three-phase-two-phase transformer, and the primary sides of the traction transformer SS1 have three phases A and B , C are connected to the public power grid, and the α output phase and β output phase of the secondary side are connected in turn with a step-down transformer G, a single-phase converter M1, a DC capacitor C, and a single-phase converter M2; the α phase is The locomotive L supplies power, and its output voltage is 27.5kV; the output voltage of the β phase is 600-2000V.
[0025] figure 2 It is also shown that the traction transformer SS1 in this example is an impedance matching balance transformer.
Embodiment 3
[0027] image 3 As shown, a specific embodiment of the present invention is: in a same-phase traction power supply system for electrified railways, the traction transformer SS1 of the traction substation is a three-phase-two-phase transformer, and the primary sides of the traction transformer SS1 have three phases A and B , C are connected to the public power grid, and the α output phase and β output phase of the secondary side are connected in turn with a step-down transformer G, a single-phase converter M1, a DC capacitor C, and a single-phase converter M2; the α phase is The locomotive L supplies power, and its output voltage is 27.5kV; the output voltage of the β phase is 600-2000V.
[0028] image 3 It is also shown that the traction transformer SS1 in this example is a YNvd transformer.
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Description
Claims
Application Information
- IPC
- B60M3/00; H02M5/10
- Inventors
- 解绍锋; 李群湛