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Power distribution network control method, device and system

A technology of distribution network and voltage value, applied in the field of distribution network, can solve the problems of poor reliability of power supply in distribution network, achieve the effect of solving poor reliability of power supply and improving reliability of power supply

Inactive Publication Date: 2018-10-16
STATE GRID BEIJING ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Embodiments of the present invention provide a method, device and system for controlling a distribution network, so as to at least solve the technical problem of poor reliability of power supply in the existing distribution network

Method used

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  • Power distribution network control method, device and system
  • Power distribution network control method, device and system

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Embodiment 1

[0032] According to an embodiment of the present invention, a system embodiment for controlling a distribution network is provided, wherein, Figure 6 is a schematic structural diagram of a system for controlling a distribution network according to an embodiment of the present invention, such as Figure 6 As shown, the system includes: converter S and transformer T. Wherein, the converter S is used to convert the DC voltage on the DC bus into an AC voltage, wherein the converter includes at least three sets of string sets, and the output voltage of each set of strings is the voltage of each phase of the converter ; The transformer T is used to convert the AC voltage and output the voltage value corresponding to the distribution network, wherein the secondary side of the transformer is connected to the AC output terminal of the converter, and there is no electrical connection between the secondary sides of the transformer.

[0033] It should be noted that the above-mentioned t...

Embodiment 2

[0056] According to an embodiment of the present invention, an embodiment of a method for controlling a distribution network is also provided. It should be noted that the steps shown in the flow charts of the drawings can be executed in a computer system such as a set of computer-executable instructions, Also, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0057] Figure 8 is a flowchart of a method for controlling a distribution network according to an embodiment of the present invention, wherein the method for controlling a distribution network can be implemented in the system for controlling a distribution network provided in Embodiment 1. Such as Figure 8 As shown, the method includes the following steps:

[0058] Step S802, acquiring the DC voltage on the DC bus;

[0059] Step S804, converting the DC voltage into an AC voltage, and converting ...

Embodiment 3

[0084] According to an embodiment of the present invention, an embodiment of a device for controlling a distribution network is also provided, wherein, Figure 9 is a schematic structural diagram of a device for controlling a distribution network according to an embodiment of the present invention, such as Figure 9 As shown, the device includes: an acquisition module 901 and a conversion module 903 .

[0085] Among them, the acquisition module 901 is used to obtain the DC voltage on the DC bus; the conversion module 903 is used to convert the DC voltage into an AC voltage, and convert the AC voltage into a voltage value corresponding to the distribution network through a transformer, wherein the transformer's There is no electrical connection between the secondary sides.

[0086] It should be noted that the DC bus is connected to the converter, and the AC output terminal of the converter is connected to the secondary side of the transformer, wherein the converter includes at...

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PUM

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Abstract

The invention discloses a power distribution network control method, device and system. The system comprises a current converter for converting direct voltage on a direct current bus into alternatingvoltage, and a transformer for converting alternating voltage and outputting a voltage value corresponding to the power distribution network, wherein the current converter comprises at least three sets of string formation sets, and output voltage of each string formation set is each phase voltage of the converter, the secondary sides of the transformer are connected with the alternating output endof the current converter, and no electrical connection is formed between the secondary sides of the transformer. The technical problem that an existing power distribution network is poor in power supply reliability is solved.

Description

technical field [0001] The invention relates to the field of distribution networks, in particular to a method, device and system for controlling a distribution network. Background technique [0002] At present, in order to reduce the circulating current and short-circuit current of the medium-voltage distribution network, the existing medium-voltage distribution network can only be connected and cannot operate in a closed loop. The ring network operation device of the medium-voltage distribution network is a device that can make the medium-voltage distribution network run in a loop. It can control the network circulation without increasing the short-circuit current, and improve the mutual interaction between the distribution network partitions. Mutual economic supply capacity, thereby improving the reliability of urban distribution network power supply. [0003] At the present stage, the closed-loop operation device of the distribution network mainly realizes the closed-loo...

Claims

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Application Information

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IPC IPC(8): H02J3/36
CPCH02J3/36Y02E60/60
Inventor 崔福博张帆李伟张璞张凯秦冰滕苏郸宫一玉李翔宇高扬鹤刘景延郭思琪
Owner STATE GRID BEIJING ELECTRIC POWER