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A power grid partitioning algorithm based on structural characteristics

A technology of power grid partition and structural characteristics, applied in electrical components, circuit devices, AC network circuits, etc., can solve problems such as difficulty in forming partition plans, lack of theoretical support, etc., to achieve the effect of simplifying the power network

Inactive Publication Date: 2018-12-14
RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER +2
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Problems solved by technology

In the existing technology, the research on the zoning of the electromagnetic ring network is mainly concentrated in the scheme evaluation stage. The scheme formation process is only divided according to the engineering experience according to the administrative division or the electric power company to which the power grid belongs. There is no effective theoretical support, and it is difficult to form a reasonable zoning scheme.

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  • A power grid partitioning algorithm based on structural characteristics
  • A power grid partitioning algorithm based on structural characteristics
  • A power grid partitioning algorithm based on structural characteristics

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Embodiment Construction

[0063] Such as figure 1 As shown, a grid partition algorithm based on structural characteristics includes the following steps:

[0064] 1) The power network is simplified, and the specific simplification methods include:

[0065] a. The power network is limited to the high-voltage transmission network, regardless of the distribution network and the main wiring form of the power plant and substation;

[0066] b. All power plant nodes, substation nodes and load nodes in the power network are abstracted as indifferent nodes, and the grounding point is not considered;

[0067] c. All high-voltage transmission lines and transformer branches are abstracted as weighted edges in the network, and the weight is the admittance modulus value of the branch, and the directionality of the network is ignored;

[0068] After the above simplification, the power network forms an undirected and weighted sparse connected graph with n nodes, which is represented by an association matrix A of orde...

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Abstract

The utility model relates to a power grid partitioning algorithm based on structural characteristics, belonging to the technical field of power grid maintenance. The power grid partitioning algorithmincludes the following steps: 1) simplifying a power network; 2) initially calculating a network shortest path length matrix; 3) calculating the betweenness of all sides in the current network; 4) finding the side with the highest betweenness; 5) calculating the network shortest path length matrix after the community division; 6) judging whether a new partition appears or not; 7) calculating a weighting module index; 8) judging whether each hub is classified into different partitions; 9) judging whether there is a partition without a hub substation; 10) using a greedy algorithm to quickly merge partitions; 11) calculating a weighting modularity index after partition merging; and 12) outputting an electromagnetic looped network partitioning scheme. The problem of high blindness in power network partitioning is solved, and a complex network community structure theory is applied to the power network partitioning process, thus a theoretical basis is provided for the formation of a partitioning scheme and the quality of network partitioning can be measured macroscopically.

Description

technical field [0001] The invention relates to a grid partition algorithm based on structural characteristics, and belongs to the technical field of grid maintenance. Background technique [0002] In recent years, with the construction of high-level voltage grids, the lower-level voltage grids have gradually realized partition operation, and adjacent partitions are kept as backups for each other. Electromagnetic ring networks of different voltage levels that seriously affect the safety and stability of the power grid should be avoided and eliminated. In the existing technology, the research on the zoning of the electromagnetic ring network is mainly concentrated in the scheme evaluation stage. The scheme formation process is only divided according to the engineering experience according to the administrative division or the power company to which the power grid belongs. There is no effective theoretical support, and it is difficult to form a reasonable zoning scheme. . [...

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Application Information

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IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 田鑫李雪亮赵龙吴健牟宏王颢贾善杰李勃高效海孙东磊高晓楠汪湲付一木魏鑫魏佳张佳宁王男
Owner RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER
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