Frangibility prediction method for large power grid

A forecasting method and vulnerability technology, applied in forecasting, instrumentation, data processing applications, etc., can solve the problems of complicated and complex vulnerability forecasting methods for large power grids, and achieve the effects of convenient and effective analysis, easy inspection, and simple process.

Inactive Publication Date: 2016-04-27
STATE GRID CORP OF CHINA +2
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for predicting the vulnerability of large power grids, in order to solve the cumbersome and complicated problems of the vulnerability prediction methods for large power grids in the prior art

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  • Frangibility prediction method for large power grid
  • Frangibility prediction method for large power grid
  • Frangibility prediction method for large power grid

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Embodiment Construction

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0032] The invention provides a method for predicting the vulnerability of a large power grid based on complex network theory, which includes the following steps:

[0033] Step 1: Obtain grid planning data and system operation constraints, including: grid planning data, system operation constraints;

[0034] Step 2: Construct a complex network mathematical model of the power grid according to the obtained constraints;

[0035] Step 3: For the above complex network mathematical model, use the betweenness algorithm based on the shortest path to calculate the pure graph theory betweenness of each node and edge, the electrical betweenness of the power flow distribution factor based on the line capacity, and the electrical betweenness of the power flow distribution factor based on the transmission capacity number;

[0036] Step 4: According to the three types of...

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Abstract

The invention relates to a frangibility prediction method for the large power grid. The method is characterized by comprising the following steps that 1) power-grid rack program data and a system operation constrained condition are obtained; 2) a complex network mathematical model of the power grid is established according to the obtained constrained condition; 3) aimed at the complex network mathematical model, the purely graph-theory betweenness, the line capacity based trend distribution factor electric betweenness and the transmission capacity based trend distribution factor electric betweenness of each node/side are calculated; 4) a static fragile link of the grid is determined according to the three types of betweennesses obtained in the step 3); 5) a dynamic fragile link of the grid is determined by taking the three types of betweennesses in the step 3) as the basis; and 6) the static fragile link is integrated with the dynamic fragile link to obtain a fragile link of the whole large power grid. According to the invention, the large power grid is analyzed conveniently and effectively by utilizing complex network theories, so that a design staff can carry repeated examination and timely adjustment in the design process of the rack structure, and the process is simple.

Description

technical field [0001] The invention relates to the technical field of power grid security analysis, in particular to a method for predicting the vulnerability of a large power grid. Background technique [0002] The stable and reliable operation of the power system is closely related to national production, life and even national security. With the vigorous development of my country's power grid construction, the development of new energy power generation, and the increasing number of practical projects such as high-voltage direct current transmission, it is particularly important to make effective, scientific and reasonable predictions for these planning schemes. In the pre-planning process of power grid construction, the reliability analysis of the target power grid is an indispensable link. At present, experts and scholars in related fields have devoted themselves to the research on the reliability and vulnerability of large power grids in power systems, and have achiev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCY02E40/70Y04S10/50
Inventor 王圆圆田春筝王磊陈欣琰王建学杨红旗毛玉宾黄景慧
Owner STATE GRID CORP OF CHINA
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