Topology construction method, system and device of DC power distribution experiment system

An experimental system, a technology for DC power distribution, applied in the direction of DC network circuit devices, circuit devices, AC network circuits, etc., can solve the problem that the topology of the DC power distribution experimental system is not flexible enough, the scale and construction cost of the experimental system increase, and the power grid operation topology limited form, etc.

Pending Publication Date: 2018-06-08
CHINA ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The topological form of the existing DC power distribution experimental system is generally not flexible enough. The single-node or two-node "one" structure or four-node ring structure can form a limited topology of the power grid through switching operations, which is difficult to adapt to DC. The study of power distribution topology needs
To build an experimental system capable of constructing multiple topological structures often means setting up more electrical nodes (such as 5-node and 6-node systems), and the scale and construction cost of the experimental system will increase significantly

Method used

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  • Topology construction method, system and device of DC power distribution experiment system
  • Topology construction method, system and device of DC power distribution experiment system
  • Topology construction method, system and device of DC power distribution experiment system

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Embodiment 1

[0041] figure 1 A flow chart of a DC power distribution experimental system topology construction method provided by the present invention, such as figure 1 As shown, a DC power distribution experimental system topology construction method provided by the present invention includes:

[0042] Set up at least 4 DC network endpoints;

[0043] Connect the endpoints of the DC network through side branches to form a ring-shaped DC grid structure. An internal branch is set inside the DC grid structure. One end of the internal branch is connected to any one of the side branches. Two DC Connecting to network endpoints, the other end of the internal branch is connected to the remaining DC network endpoints, the two ends of the side branch and the two ends of the internal branch are connected to the DC network endpoints through a switch module;

[0044] By adjusting the switch module, the DC distribution network topology is adjusted.

[0045] It also includes: the DC network terminal ...

Embodiment 2

[0055] Based on the same inventive concept, the present invention provides a DC power distribution experimental system topology construction system, which may include:

[0056] A setting module, configured to set at least 4 DC network endpoints;

[0057] The building module is used to connect the endpoints of the DC network through side branches to form a ring-shaped DC power grid structure, and an internal branch is set inside the DC power grid structure, and one end of the internal branch and any side branch The two connected DC network endpoints are connected, the other end of the internal branch is connected to the remaining DC network endpoints, the two ends of the side branch and the two ends of the internal branch are connected to the DC network endpoints through a switch module ;

[0058] An adjustment module, configured to adjust the DC distribution network topology by adjusting the switch module.

[0059] The building module further includes: the DC network termina...

Embodiment 3

[0069] Based on the same inventive concept, the present invention also provides a DC power distribution experimental system topology device, which may include: at least 4 DC network endpoints;

[0070] The endpoints of the DC network are connected through side branches to form a ring-shaped DC grid structure;

[0071] Internal branches are provided inside the DC grid structure;

[0072] One end of the internal branch is connected to two DC network endpoints connected to any side branch, and the other end of the internal branch is connected to the remaining DC network endpoints;

[0073] The two ends of the side branch and the two ends of the inner branch are connected to the terminals of the DC network through a switch module;

[0074] The switch module may include: a mechanical switch and / or a circuit breaker switch of an interlock mechanism.

[0075] Both the side branch and the internal branch may be DC lines.

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Abstract

The invention provides a topology construction method, system and device of a DC power distribution experiment system. The topology construction method comprises the steps of arranging at least four DC network end points; connecting the DC network end points by a side branch to form an annular DC power grid structure; arranging an internal branch in the DC power grid structure, wherein one end ofthe internal circuit is connected with the two DC network end points connected an arbitrary side branch, the other end of the internal circuit is connected with the remaining DC network end points, and two ends of the side branch and two ends of the internal branch are connected with the DC network end points via a switch module; and adjusting a topology structure of a DC power distribution network by adjusting the switch module. With the topology construction method provided by the technical scheme, various topology structures can be achieved by adjusting the switch modules.

Description

technical field [0001] The invention relates to DC distribution network technology, in particular to a DC distribution experimental system topology construction method, system and device. Background technique [0002] Compared with the traditional AC distribution network, the DC distribution network based on flexible DC technology has more superior performance in terms of improving power transmission capacity, increasing system controllability, and improving power supply quality, and can also coordinate distribution well. The contradiction between the distributed power supply and the grid, and fully tap the benefits and value of distributed energy. Therefore, a flexible DC distribution network with stability, economy, reliability and safety has huge economic value and market potential. [0003] Nowadays, the interconnection of power grids is the objective law of the development of the electric industry in various countries and the inevitable trend of the development of elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J1/00H02J3/36
CPCH02J1/00H02J3/36H02J2203/20Y02E60/60
Inventor 张海孙丽敬李蕊吴鸣
Owner CHINA ELECTRIC POWER RES INST
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