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Key node recognition method for regional power grid

A technology of regional power grid and key nodes, applied in the field of power system

Active Publication Date: 2017-12-15
广东电网有限责任公司惠州供电局 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] It can be seen that the existing methods for identifying key nodes in the regional power grid still need to be improved

Method used

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  • Key node recognition method for regional power grid
  • Key node recognition method for regional power grid
  • Key node recognition method for regional power grid

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Embodiment Construction

[0084] The accompanying drawings are for illustrative purposes only, and should not be construed as limitations on this patent; in order to better illustrate this embodiment, certain components in the accompanying drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art It is understandable that some well-known structures and descriptions thereof may be omitted in the drawings. The positional relationship described in the drawings is for illustrative purposes only, and should not be construed as a limitation on this patent.

[0085] Such as figure 1 As shown, a method for identifying key nodes of a regional power grid, its basic implementation process includes the following detailed steps:

[0086] Step 1, input power system topology parameters (line connection relationship), electrical characteristic parameters (node ​​parameters, line parameters);

[0087] Step 2. Calculate the index value of each node...

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Abstract

The invention relates to a key node recognition method for a regional power grid, and the basic flow of the method comprises the steps: inputting a power system topological structure and electrical characteristic parameters; calculating the values of evaluation indexes of a node; obtaining a node importance evaluation decision making matrix according to the values of the evaluation indexes; generating a node importance evaluation decision making matrix of a standard regional power grid; giving consideration to a Gini coefficient and a Kendall correlation coefficient, and solving the objective weights of the indexes through a CRITIC method; and solving an evaluation result of the node importance through a TOPSIS method. According to the technical scheme of the invention, the method gives full consideration to the physical features of the network topological structure and the operation state parameters of the power grid. The method can achieve the better recognition of the key node of the power grid, avoids the subjectivity of manual determination of the weights, and enables an evaluation result to be more suitable for the actual operation conditions of the power grid.

Description

technical field [0001] The present invention relates to the technical field of power systems, and more specifically, to a method for identifying key nodes of a regional power grid. Background technique [0002] With the continuous increase of the installed capacity of the power system, the interconnection between regional power grids and the integration of a high proportion of renewable energy with randomness and uncertainty, the complexity of power system operation and maintenance is increasing, and the power system often Operate closer to the limit state. In addition, power systems inevitably face the challenges of extreme weather and natural disasters. These factors lead to an increase in the possibility of large-scale blackouts in the power system. Therefore, it is of great significance to accurately and quickly identify the key nodes of the power grid to prevent large-scale power outages in the power grid. [0003] At present, some indicators and methods have been pr...

Claims

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Application Information

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IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 吕云锋韩畅林冠强叶晓君莫天文李惠松王志奎赵昱宣林振智
Owner 广东电网有限责任公司惠州供电局
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