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Train regenerative braking failure suppression device and control method thereof

A technology of regenerative braking and suppression device, applied in circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, emergency protection circuit devices, etc., can solve the problem of excess regenerative braking energy, train regenerative braking failure and other issues to achieve the effect of improving and enhancing safety, increasing utilization, and reducing impact

Pending Publication Date: 2020-01-17
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

[0007] The purpose of the present invention is to provide a train regenerative braking failure suppression device, which can effectively solve the regenerative braking failure of the train caused by the excessive voltage at the end of the power supply arm, and can also support the voltage at the end of the power supply arm, and take into account the absorption of redundant regenerative braking. Technical issues with braking energy

Method used

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  • Train regenerative braking failure suppression device and control method thereof
  • Train regenerative braking failure suppression device and control method thereof
  • Train regenerative braking failure suppression device and control method thereof

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] figure 1 As shown, a specific embodiment of the present invention is: a train regenerative braking failure suppression device, including an energy storage device 1, a supporting capacitor 2, and a converter 3; The current transformer 5 and the AC side of the converter 3 are connected to the end of the catenary 4 and the rail 7, and the DC side is connected in parallel with the energy storage device 1 and the supporting capacitor 2; the current transformer 5 measures the current of the feeder 6; the voltage transformer 8 measures the catenary 4 terminal voltage.

[0030] figure 2 It is a schematic diagram of the connection relationship of the measurement and control unit in the embodiment of the present invention. The two input interfaces of the measurement and control unit 9 are respectively connected to the measurement terminals of ...

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Abstract

The invention provides a train regenerative braking failure suppression device and a control method thereof, and relates to the technical field of electrified railway power quality control. A currenttransformer is arranged at a head-end feeder line of a traction substation power supply arm, a converter is arranged at the tail end of the power supply arm, the alternating-current side of the converter is connected with an overhead line system and a steel rail, the direct-current side of the converter is connected with an energy storage device, a supporting capacitor is connected between the converter and the energy storage device in parallel, and a voltage transformer is arranged at the tail end of the power supply arm. The measurement end of the current transformer and the measurement endof the voltage transformer are connected with the input interface of the measurement and control unit. The output interface of the measurement and control unit is connected with the control end of theconverter and the control end of the energy storage device. The measurement and control unit obtains power supply arm tail end voltage and feeder current parameters in real time through a voltage transformer and a current transformer, and controls the working states of the energy storage device and the converter in real time.

Description

technical field [0001] The invention relates to the field of electrified railways, in particular to the technical field of power quality control of electrified railways. Background technique [0002] Ensuring the power quality of electrified railways is an important condition to ensure the safe operation of electric locomotives, and the voltage level at the end of the power supply arm of some lines has become the primary problem restricting power quality. [0003] With the continuous development of power electronic AC drive technology, my country has basically completed the upgrade from AC-DC electric locomotives to AC-DC electric locomotives. AC-DC electric locomotives can use regenerative braking, feedback regenerative braking energy, and be The adjacent locomotive absorbs or feeds back the three-phase grid. However, almost the entire power supply arm of some lines is on a long slope, and most electric locomotives on the power supply arm are in the regenerative braking con...

Claims

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Application Information

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IPC IPC(8): H02H9/04H02J3/16H02J3/28
CPCH02H9/045H02J3/16H02J3/28Y02E40/30
Inventor 解绍锋陈利夫李群湛郭锴黄小红易东
Owner SOUTHWEST JIAOTONG UNIV
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