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Power grid planning method by combining power grid structural vulnerability

A technology for power grid planning and power grid structure, which is applied in the field of electric power and can solve problems such as the inability to comprehensively evaluate and quantify the vulnerability of the system structure.

Inactive Publication Date: 2016-03-09
STATE GRID SICHUAN ECONOMIC RES INST
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects in the prior art and to design a grid planning method combined with the vulnerability of the grid structure. In this method model, starting from the complex network theory, a method for analyzing the global structure of the grid according to the uniformity of the grid structure is proposed. The vulnerability method overcomes the inadequacy of traditional methods that cannot comprehensively assess and quantify the structural vulnerability of the system

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  • Power grid planning method by combining power grid structural vulnerability
  • Power grid planning method by combining power grid structural vulnerability
  • Power grid planning method by combining power grid structural vulnerability

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[0121] The specific implementation manners of the present invention will be further described below in conjunction with the drawings and examples. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0122] The technical solution adopted in the present invention is a grid planning method combined with the vulnerability of the grid structure. The steps of the grid planning method in this embodiment are as follows:

[0123] (1) Vulnerability factor model of component structure based on electrical betweenness:

[0124] (1) Electrical betweenness: According to the principle of power grid topology model establishment, the power grid is simplified into a directed weighted network composed of N nodes and M edges; the nodes can be divided into three types: generators, loads and contact nodes; Erhoff's law to establish the electrical betweenness model of compon...

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Abstract

The present invention relates to a power grid planning method by combining power grid structural vulnerability. The power grid planning method uses the power grid structural vulnerability as one factor of planning evaluation, and comprises the steps of: providing an improved electrical betweenness model by combining economic difference of generators and load; introducing a Gini coefficient to measure distribution uniformity of electrical betweennesses of elements, and evaluating the power grid structural vulnerability through importance distribution uniformity of power grid elements; performing comprehensive evaluation for investment construction and operation maintenance cost of the power grid, system annual operation cost, power grid global structural vulnerability factors and a security constraint set of a panning scheme through a principal component analysis method, taking the smallest comprehensive evaluation index as an optimization object, and solving a power grid planning model through a genetic algorithm, so as to obtain a power grid planning scheme with the optimal coordination between economy and vulnerability.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a grid planning method combined with the vulnerability of the grid structure. Background technique [0002] Nowadays, the power grid is gradually developing in the direction of ultra-high voltage, large capacity, long-distance power transmission and regional interconnection, and its structure is unprecedentedly complex. On the one hand, it brings huge benefits to the power grid, on the other hand, it also poses a huge challenge to the safe and stable operation of the power grid. Rational planning of the grid structure is the basis for the safe and stable operation of the grid. In the field of grid planning, existing technical solutions are mainly implemented based on the security, economy, and reliability of the grid. However, the grid structure itself plays an important role in the safe and stable operation of the power system. Existing studies have shown that the rationality of...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCY04S10/50
Inventor 王晞张玉鸿张全明周友富
Owner STATE GRID SICHUAN ECONOMIC RES INST
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