Electrified railway traction power supply and energy storage device and method thereof

A technology for electrified railways and energy storage devices, applied in power lines, harmonic reduction devices, transportation and packaging, etc., can solve the problems of increased initial installation costs of traction transformers, increased negative sequence currents, and increased basic electricity costs, achieving improved Effects of energy utilization, stable power supply voltage, and reduced billing capacity
CN103840477AActive Publication Date: 2014-06-04CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
4 Cites 53 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
Publication Date
2014-06-04

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses an electrified railway traction power supply and energy storage device and a method of the electrified railway traction power supply and energy storage device. The energy storage device is connected between a feeding arm alpha or feeding arm beta at the output end of a traction transformer and a steel rail, or two energy storage devices are connected between the feeding arm alpha and the steel rail and between the feeding arm beta and the steel rail respectively, wherein the energy storage device is arranged in a traction substation. The energy storage device comprises a control unit, an isolation transformer, a PWM current transformer, an energy transformation circuit and an energy storage element, wherein the PWM current transformer, the energy transformation circuit and the energy storage element are connected in sequence, and the control unit is used for carrying out calculation according to the voltage, current and direction of the feeding arm alpha and / or feeding arm beta to complete control over the PWM current transformer and the energy transformation circuit and achieve energy exchange between the energy storage device and the feeding section connected with the energy storage device. The electrified railway traction power supply and energy storage device can fully recycle locomotive braking feedback electric energy, improve the energy utilization ratio of a traction power supply system, reduce the installation billing capacity of the traction transformer, reduce cost and absorb and store energy even in electricity valleys, has the effect of peak load shifting and further has the functions of dynamic reactive-power compensation and low-order harmonic suppression.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of electrified railways, in particular to a traction power supply energy storage device and a method thereof applied in the field of electrified railways. Background technique

[0002] At present, the world's energy is becoming increasingly tense, and energy conservation and consumption reduction have become a worldwide research topic, and energy recovery and reuse is an effective means of energy conservation and consumption reduction. In recent years, with the development of my country's rail transit field, especially the high-speed and heavy-duty electrified railways, railways, as a key energy-consuming industry, have great potential in energy recovery and reuse. On the one hand, the electrified railway traction power supply system does not have a high utilization rate of electric locomotive braking feedback power, and in many cases it is directly fed back to the three-phase AC grid, which cannot produce economic be...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More