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Gridding method for one-line diagram layout and optimization of zone electric distribution system

A power distribution system, one-line diagram technology, used in instrumentation, data processing applications, forecasting, etc.

Active Publication Date: 2015-11-11
STATE GRID OF CHINA TECH COLLEGE +1
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Problems solved by technology

[0003] In order to solve the above problems, the present invention proposes a gridding method for the single-line diagram layout and optimization of the regional power distribution system. This method relies on the advantages of the grid layout in the application of complex network visualization, and studies the regional distribution system based on discrete grid technology. Arrangement of a large number of nodes and the connection relationship between them in the single line diagram of electrical system

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  • Gridding method for one-line diagram layout and optimization of zone electric distribution system
  • Gridding method for one-line diagram layout and optimization of zone electric distribution system
  • Gridding method for one-line diagram layout and optimization of zone electric distribution system

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Embodiment Construction

[0048] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0049] 1 Application of genetic algorithm in node layout

[0050] 1.1 General Model of Node Layout Problem

[0051] In order to make the geometric distribution of nodes have a better correspondence with the logic of network connections, the layout space is firstly discretized into a neat grid with u rows and v columns, each node occupies a grid, and a Boolean variable is used to mark the grid status. On the other hand, in order to conform to the habits of the operators in viewing pictures, the location of the substation should be roughly similar to the geographical relative location. In this paper, the geographic information of the substation in the network is converted into coordinate constants and placed in the corresponding grid as the constraint of the optimization problem. .

[0052] After the location of the station is fixed, the problem of lin...

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Abstract

The invention discloses a gridding method for one-line diagram layout and optimization of a zone electric distribution system. The method comprises the following steps of: gridding a layout space, forming a grid lattice of a node layout solution space and a line corridor space of lines, and limiting the node layout solution space in the grid lattice of nodes; describing each grid state by adopting a relevant enumeration variable; performing node layout, establishing a node layout model, and adopting a shortest Manhattan distance of the nodes as a target function for node layout and optimization; performing mapping and initialization, determining the position of a transformer substation in grids according to relative geographic information by utilizing hierarchical branch attributes of a power distribution line, and arranging branch contact lines of a distribution network by selecting a hierarchical layout algorithm; introducing a self-adaptive crossover probability, and introducing different crossover probabilities for different fitness values; and avoiding overlapping and crossing situations of the lines. The gridding method disclosed by the invention effectively assists in node layout and optimization of a one-line diagram and arrangement of the lines in the zone electric distribution system.

Description

technical field [0001] The invention relates to a gridding method for layout and optimization of a single-line diagram of a regional power distribution system. Background technique [0002] The automatic drawing technology of electrical one-line diagram is one of the important research topics in the field of graphic visualization, and it is also a general supporting technology to realize the intelligentization of system application software. Since the urban medium-voltage power distribution network adopts a variety of ring connection methods such as single-ring network, double-ring network, and multi-segment multi-connection, the coupling degree of nodes increases, and the complexity of the network structure also increases. Therefore, the single-line diagram Automatic drawing presents new challenges. Among the existing graph layout algorithms, the hierarchical layout algorithm [1] It is only suitable for networks with a relatively simple topology such as radial networks, a...

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/06
Inventor 周博曦张艳杰孙连喜范友鹏荣潇
Owner STATE GRID OF CHINA TECH COLLEGE
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