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High reliability power supply method for electric locomotive

A technology of electric locomotive and power supply method, which is applied in the field of rail transit, can solve the problems of lack of negative sequence and reactive current compensation capabilities, dead zone of electric locomotive power supply, large converter capacity, etc., to ensure switching power-off time, The effect of reducing reactive current and preventing power flow circulation

Active Publication Date: 2022-06-07
ZHENGZHOU RAILWAY VOCATIONAL & TECH COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional over-phase separation scheme, there are problems such as large capacity and high cost of the converter, power supply dead zone of the electric locomotive and lack of negative sequence and reactive current compensation capabilities

Method used

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  • High reliability power supply method for electric locomotive
  • High reliability power supply method for electric locomotive
  • High reliability power supply method for electric locomotive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A high-reliability power supply method for electric locomotives, including the following steps:

[0038] S1, by the switch 16 and the switch 16 in series with the impedance 18, switch 17 and the switch 2 17 in series with the impedance 2 19, located on the rail sensor 14 composed of a detection unit for the train relative to the catenary driving position and driving direction of the judgment, the neutral zone 200 no train running, switch 16 and switch 2 17 are disconnected, the train travels to the transition zone between the power supply arm 100 and the neutral zone 200, the switch 16 is closed, the train is within 200 of the neutral zone, Switch one 16 is disconnected, switch two 17 is closed, when the train leaves the transition zone between the neutral zone 200 and the power supply arm two 300, the switch two 17 is disconnected.

[0039] S2, the train by the catenary of the power supply arm 100 to the neutral zone 200 in the process of driving, by the power supply unit ...

Embodiment 2

[0042] combine Figure 1 and Figure 2 , a high reliability power supply method for electric locomotives, comprising catenary and rail, the catenary comprises a neutral zone 200 and a power supply arm 100 and a power supply arm 200 and a power supply arm 300 at each end of the neutral zone 200, comprising a TCMS locomotive controller 13, a power supply unit and a detection unit.

[0043] The power supply unit comprises a traction transformer 400, a step-down transformer 1, a step-up transformer 4, a three-phase rectifier 2 and a single-phase inverter 3, the primary side output terminal of the step-down transformer 1 is connected to the power supply arm 100, the power supply arm 300 and the rail, the secondary side of the step-down transformer 1 is connected to the three-phase rectifier 2, the primary side of the step-up transformer 4 is connected to the AC output terminal of the single-phase inverter 3, the secondary side of the step-up transformer 4 is connected to the neutral regi...

Embodiment 3

[0050] combine Figure 1 , the output terminal of the current receiver 5 is connected to the traction inverter 8 and the auxiliary inverter 6, the output terminal of the auxiliary inverter 6 is connected to the load 7, the output of the traction inverter 8 is connected to the traction motor 9, the output terminal of the current receiver 5 is also connected to the battery 10 by the charger 11, the battery 10 is powered by the traction inverter 8 to the traction motor 9, the charger 11 is a DC / DC converter.

[0051] Through the battery to achieve the uninterrupted power supply of important loads, so that the locomotive in the no-power area when the load continues to work continuously, reduce the use of important load failure rate, improve the comfort of drivers and passengers, to ensure driving safety.

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Abstract

The invention relates to a high-reliability power supply method for an electric locomotive, comprising the following steps: S1, a detection unit judges the running position and direction of the train relative to the catenary, and S2, the train travels from the power supply arm of the catenary to the neutral zone During the process, the converter of the power supply unit modulates the amplitude and shifts the phase, so that the neutral zone generates a voltage with the same phase and amplitude as the power supply arm, the train enters the neutral zone, and S3 travels from the neutral zone to the second power supply arm During the process, the converter amplitude and phase shift, so that the neutral zone generates a voltage with the same phase and amplitude as the second power supply arm, and the train enters the second power supply arm area; the power supply system provided by the present invention, by changing the neutral section The output voltage of the rectifier makes the neutral area and the power supply arm generate voltages with the same phase and amplitude, so that when the electric locomotive passes through the electric split phase area, it will drive by inertia with full load when the power is off, eliminating the power supply dead zone of the locomotive and improving safety and reliability.

Description

Technical field [0001] The present invention belongs to the field of rail transit technology, specifically relates to a high reliability power supply method for electric locomotives. Background [0002] An electric locomotive is a locomotive driven by a traction motor with wheels, and an electric locomotive is a locomotive that does not have its own energy because the required electrical energy is supplied by the catenary of the electrified railway power supply system. Electric locomotives with its high power, strong overload capacity, large traction, fast speed, short maintenance time, low maintenance, low operating costs, easy to achieve multi-machine traction, can use regenerative braking and energy saving and many other advantages, more and more widely used in the railway transportation industry, the use of electric locomotive traction train, can improve the speed of train operation and bearing weight, thereby greatly improving the railway transportation capacity and passing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60M3/02B60M3/04
CPCB60M3/02B60M3/04Y02T10/72
Inventor 李长留李建龙海方毕红雪雷成
Owner ZHENGZHOU RAILWAY VOCATIONAL & TECH COLLEGE
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