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Power grid partitioning method based on spectral clustering

A power grid partitioning and spectral clustering technology, applied in the field of power grid partitioning based on spectral clustering, can solve the problems of unreasonable considerations and unadjustable partitioning methods, and achieve the effect of reasonable, reliable and adaptable partitioning schemes

Inactive Publication Date: 2019-10-08
NANJING UNIV OF SCI & TECH
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Problems solved by technology

However, this partition method cannot be adjusted according to the actual operation situation, and the rationality needs to be considered

Method used

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  • Power grid partitioning method based on spectral clustering
  • Power grid partitioning method based on spectral clustering
  • Power grid partitioning method based on spectral clustering

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Embodiment

[0053] The black starter system division method of the present invention is used to divide the IEEE-39 standard test system to verify the validity of the algorithm. The IEEE-39 standard test system includes 12 transformers, 34 lines and 10 generator sets, 30 to 39 nodes are equipped with generator sets, and the remaining 29 are bus nodes.

[0054] Assuming that the power grid is completely shut down at the initial stage of the black start, the generators 30, 32, and 37 are used as black start power sources with self-starting capabilities after a major blackout in the power system, and their installed capacities are 250MW, 650MW, and 540MW respectively. The starting characteristics of each unit are shown in Table 1 It shows that the start-up time of the transmission line and the transformer branch is 5 minutes.

[0055] Table 1 Power Startup Characteristics

[0056]

[0057]

[0058]Utilize the power grid partition method proposed in the present invention to restore the ...

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Abstract

The invention discloses a power grid partitioning method based on spectral clustering. A power system is simplified and abstracted into a right undirected connectivity graph, and a network topology Laplacian matrix is determined. Based on the Laplacian matrix of a power system, a clustering problem is transformed into a graph segmentation problem, and power grid partitioning is carried out. According to the invention, a spectral clustering algorithm is used to partition the power system; the method has stronger adaptability, can be applied to a power system with a complex network structure, and can be adjusted according to the actual line operation situation; and the partitioning scheme is more reasonable and reliable.

Description

technical field [0001] The invention belongs to the technical field of power grids, in particular to a method for partitioning a power grid based on spectrum clustering. Background technique [0002] With the cross-regional interconnection of the power grid and the increasing scale of the power grid, a regional fault may cause large-scale cascading faults, resulting in large-scale and long-term power outages, resulting in huge economic losses and social impacts. Affected by the operational complexity of the system, the recovery time of the power system is generally very long. Dividing the power grid into multiple partitions can greatly shorten the recovery time of the entire power grid and reduce social losses. It can also limit many uncertain factors in the recovery process to the partitions. The partition that fails to restore will not affect other partitions, and the entire power grid will be restored. more feasible and reliable. Traditional power system zoning methods ...

Claims

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Application Information

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IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 刘琳谢云云黄详淇郭伟清谷志强李德正杨正婷殷明慧卜京张俊芳姚娟邹云
Owner NANJING UNIV OF SCI & TECH
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