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Operation control method and device applied to inverter feedback device and medium

A technology of operation control and inverter, applied in transportation and packaging, power lines, vehicle components, etc., can solve problems such as inverter feedback device misoperation, and achieve the effects of reducing misoperation, reducing costs, and low cost

Active Publication Date: 2019-11-12
XUJI GRP +2
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Problems solved by technology

[0004] The purpose of the present invention is to provide an operation control method, device and medium applied to an inverter feedback device, so as to solve the problem that the inverter feedback device malfunctions due to the fluctuation of the rail transit AC power grid

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  • Operation control method and device applied to inverter feedback device and medium
  • Operation control method and device applied to inverter feedback device and medium

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] Method example:

[0023] Such as figure 1 The rail transit traction system shown includes a 35kV medium-voltage ring network (AC35kV medium-voltage ring network) connected to the traction substation, and a 1.5kV DC catenary (DC1500V DC bus) for direct drive locomotives; 35kV The volt medium-voltage ring network is connected to the 1.5 kV DC catenary through AC-DC conversion power supply, and the 1.5 kV DC catenary is connected to an inverter feedback device, and the inverter feedback device is connected to the AC 35 kV medium voltage through a 35kV / 900V energy-feedback transformer Ring.

[0024] Such as figure 2 As shown, the operation control method of the inverter feedback device includes the following steps: monitor the AC grid-connected side voltage U of the inverter feedback device in real time, and the AC grid-connected side voltage U can be ...

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Abstract

The invention relates to an operation control method and device applied to an inverter feedback device and a medium and provides an intelligent operation control method applied to the inverter feedback device. The operation control method applied to the inverter feedback device comprises the steps of tracking an alternating current side voltage of an alternating current power grid of a traction system in real time; and when abnormal fluctuation of the alternating current side voltage is monitored, adjusting a starting threshold value of the inverter feedback device according to a fluctuation situation in real time; and therefore, the effect of network voltage fluctuation on the inverter device is avoided, and the false acting situation of the feedback device is reduced. According to the operation control method applied to the inverter feedback device, the controlling and adjusting of the starting voltage threshold value of the inverter feedback device can be realized on the basis of network voltage change self-adaption; and moreover, without changing an original hardware circuit, the operation control method applied to the inverter feedback device has the advantages of simple realization method, low desired cost and high real-time performance.

Description

technical field [0001] The invention relates to an operation control method, device and medium applied to an inverter feedback device, and belongs to the technical field of urban rail transit kinetic energy recovery. Background technique [0002] In the urban rail transit power supply system, the DC catenary voltage is supported by the traction substation. When the subway train brakes, its mechanical energy is converted into electrical energy, resulting in an increase in the DC catenary voltage. When the DC catenary voltage rises above the starting threshold of the inverter feedback device, the feedback device inverts the electric energy generated by regenerative braking into AC power and feeds it back to the medium-voltage AC ring network, and at the same time realizes the stability of the DC traction network voltage Control to avoid the DC bus voltage exceeding the allowable value, and fully guarantee the regenerative braking function. [0003] However, during the operati...

Claims

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Application Information

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IPC IPC(8): B60M3/00
CPCB60M3/00
Inventor 梅桂芳郑月宾崔炳涛郎学斌李朋翔孟向军黄辉郜亚秋耿志清柳拉勋
Owner XUJI GRP
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