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Direct-current traction substation regenerative electric energy utilization test system

A technology of DC traction and test system

Active Publication Date: 2015-12-02
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is very difficult or even impossible to fully demonstrate the typical working conditions and evaluate the performance of the inverter device or energy storage device in the actual DC traction substation. At the same time, the failure of the inverter device or energy storage device may Cause power supply accidents and affect normal operation

Method used

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  • Direct-current traction substation regenerative electric energy utilization test system
  • Direct-current traction substation regenerative electric energy utilization test system

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. Such as figure 1 As shown, a test system for regenerative power utilization of DC traction substation, including power supply voltage regulating transformer TA, three-phase AC bus B AC , DC bus B DC , rectifier unit, reversible load unit, inverter unit, freewheeling resistor R, DC current sensor CT and three-phase high-voltage AC switch K, three-phase low-voltage AC switch K A , DC switch K D and other components; the power supply voltage regulating transformer TA adopts Yd wiring, and its primary side is equipped with a three-phase high-voltage AC switch K, and the second side is connected to the three-phase AC bus B AC ; The rectifier unit is composed of transformer TR and diode rectifier RU; the reversible load unit is composed of transformer TR and IGBT AC-DC converter unit ADR; the inverter unit is composed of transformer TR and IGBT DC-A...

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Abstract

The invention discloses a direct-current traction substation regenerative electric energy utilization test system. With the test system adopted, problems existing in the utilization of regenerative electric energy can be solved. The direct-current traction substation regenerative electric energy utilization test system includes a power source voltage regulating transformer, a three-phase alternating-current busbar, a direct-current busbar, a rectifying set, a reversible load set, an inverting set, an energy storage set, a current-continuing resistor, direct-current sensors and the like; the rectifying set is composed of a transformer and a diode rectifier; the reversible load set is composed of a transformer and an IGBT alternating current-to-direct current conversion unit; the inverting set is composed of a transformer and an IGBT direct current-to-alternating current conversion unit; the energy storage set is composed of a bidirectional direct current-to-direct current converter and an energy storage unit; the rectifying set, the reversible load set and the inverting set form a parallel body; and the inverting set and the inverting set can be substitutable to each other. With the direct-current traction substation regenerative electric energy utilization test system of the invention adopted, the traction and regeneration typical work conditions of a direct-current traction substation can be simulated in a high-capacity manner, and the utilization mode of regenerative electric energy of the inverting set and the energy storage set, and the control performance of the inverting set and the energy storage set can be comprehensively assessed. The direct-current traction substation regenerative electric energy utilization test system is mainly applied to the test field.

Description

technical field [0001] The invention relates to the technical field of rail transit power supply, in particular to the utilization and test technology of regenerative electric energy in DC traction substations of subways and other urban rail transits. Background technique [0002] With the development of modern power electronic device manufacturing and control technology represented by IGBT, motor AC speed regulation technology and regenerative braking technology have been widely used in urban rail power supply system, among which DC traction substation adopts 12 pulse / 24-pulse uncontrollable diode rectification, when the electric energy of the regenerative braking of the train cannot be completely absorbed by the adjacent trains in the traction condition, how to make good use of the remaining electric energy has become an urgent problem to be solved. At present, in the DC traction substation, there are two ways to utilize electric energy for train regenerative braking: one...

Claims

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Application Information

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IPC IPC(8): G01R31/00
Inventor 李群湛郭育华黄小红李亚楠刘炜李子晗刘承志孟军邓琴余俊祥
Owner SOUTHWEST JIAOTONG UNIV
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