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Energy reversible traction substation, method and system

A traction substation and energy technology, which is applied in the direction of converting equipment, electrical components, and AC power input into DC power output with reversible, can solve the problem of train regenerative braking energy waste, etc.

Pending Publication Date: 2018-06-29
BEIJING QIANSIYU ELECTRIC +1
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  • Application Information

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Problems solved by technology

[0005] The present invention provides an energy-reversible traction substation, method and system to solve the problem that train regenerative braking energy is wasted on resistors in the existing urban rail transit traction power supply system, and at the same time ensure that the regenerative braking energy of trains is consumed by multiple Common absorption of traction substations to improve energy utilization

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  • Energy reversible traction substation, method and system
  • Energy reversible traction substation, method and system
  • Energy reversible traction substation, method and system

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Embodiment Construction

[0050] Usually, an urban rail transit traction power supply system includes an AC grid, a DC catenary, and multiple traction substations, and each traction substation includes a diode rectifier unit. Such as figure 1 As shown, for the convenience of description, a traction substation is taken as an example to describe this embodiment in detail.

[0051] Usually, in the existing urban rail transit traction track system, regenerative braking energy will be generated when the train enters the station for braking, and the energy will be consumed by the resistor, which will cause a waste of resources. In order to reasonably and fully utilize the regenerative braking energy of trains, an energy reversible traction substation can be used in this embodiment, by controlling the DC given voltage of the four-quadrant converter unit in the energy reversible traction substation The value is changed in real time, so that the regenerative braking energy of the train can be jointly absorbed ...

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Abstract

The invention provides an energy reversible traction substation, method and system. The energy reversible traction substation comprises a four-quadrant converter unit, a controller and a direct-current sensor. The four-quadrant converter unit is respectively connected with an alternating-current power grid and a direct-current contact network; the direct-current sensor is connected with the direct-current side of the four-quadrant converter unit and also connected with the controller; the controller is connected with the four-quadrant converter unit. The direct-current sensor is used for measuring and transmitting direct-current side current of the four-quadrant converter unit to the controller; the controller is used for controlling a direct-current voltage given value of the four-quadrant converter unit to change along with the change of the direct-current side current according to specific rules. The energy reversible traction substation, the method and the system provided by the invention have the benefits that a plurality of energy reversible traction substations can commonly absorb train regenerative braking energy, the power impact on the single traction substation is reduced, and the energy utilization rate is improved.

Description

technical field [0001] The invention relates to the technical field of rail transit traction power supply, in particular to an energy reversible traction substation, method and system. Background technique [0002] Urban rail transit has increasingly become the first choice to solve urban congestion problems due to its advantages of safety and comfort, large passenger capacity, fast operation speed, energy saving and environmental protection. Therefore, urban rail transit has developed rapidly in most areas. [0003] figure 1 The structural representation of the existing urban rail transit traction power supply system provided by the present invention, as figure 1 As shown, the urban rail transit traction power supply system includes an AC power grid, a DC catenary, and multiple traction substations. Each traction substation includes a diode rectifier unit. The diode rectifier unit has a simple structure and reliable performance. [0004] However, diode rectifier units ca...

Claims

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Application Information

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IPC IPC(8): H02J5/00H02M7/66H02M7/797
CPCH02J5/00H02M7/66H02M7/797
Inventor 刘志刚刘贺江张钢白锡彬王永葛洲牟富强徐东昇魏路漆良波吕海臣陈杰邱瑞昌
Owner BEIJING QIANSIYU ELECTRIC
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