Power grid key section automatic searching method with geographical zone boundary optimization taken into consideration

A technology for geographical partitioning and boundary optimization, applied in the fields of electrical digital data processing, special data processing applications, instruments, etc.

Inactive Publication Date: 2014-01-08
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +2
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  • Power grid key section automatic searching method with geographical zone boundary optimization taken into consideration
  • Power grid key section automatic searching method with geographical zone boundary optimization taken into consideration
  • Power grid key section automatic searching method with geographical zone boundary optimization taken into consideration

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Embodiment Construction

[0053] The present invention will be further described below in conjunction with the accompanying drawings and examples.

[0054] The invention mainly relates to the optimization of system partitions, the rapid search of power transmission sections and the screening of important sections.

[0055] figure 1 It is a flowchart of the present invention. An automatic search method for key sections of the power grid considering the optimization of geographical partition boundaries, the method:

[0056] Optimizing partitions must first be based on the initial partition. According to the actual power grid data, the number of geographical divisions, the stations contained in each district, and the connection lines between regions are obtained. Simplify the power grid into a graph G(V,E), the vertex set V contains each partition of the power grid, and the edge set E is the connection line set between the partitions. In graph theory, the degree of vertex j is recorded as d(j), which ...

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Abstract

The invention relates to a power grid key section automatic searching method with geographical zone boundary optimization taken into consideration, and belongs to the technical field of safe running methods of power systems. Optimization is carried out on geographical zones, power transmission sections are searched, calculation and ranking need to be carried out on the importance degrees of all the sections according to the criteria of the importance degrees after the power transmission sections of the system are obtained to obtain key sections, and the importance degrees are larger if the power flow of the sections is heavier and the margins are smaller, and the sections with the larger importance degrees need to be monitored intensively. According to the power grid key section automatic searching method with the geographical zone boundary optimization taken into consideration, the static stable extreme power flow of the sections is taken as Pimax which is obtained through calculation by using a continuation power flow method. Effectiveness verification is carried out by using the method in a New England 39-node standard system and 500kV system of the North China Power Grid, the key sections obtained by the automatic section searching are identical with the actual running conditions, and thus the accuracy of the method is verified. The power grid key cross-section automatic searching method with geographical zone boundary optimization taken into consideration is fast, and has important significances on the aspect of safety operation of the power system and on the aspect of automatic identification of power transmission sections.

Description

technical field [0001] The invention relates to a method for quickly and automatically searching a key section of a power grid based on an actual power grid geographical partition optimization and a graph theory algorithm, and belongs to the technical field of power system safe operation methods. Background technique [0002] As the scale of the power system is expanding day by day and the structure is getting closer, the interconnection of large power systems is the current development trend. The operation of the combined power system has obvious advantages. However, the closer the connection between the components, the greater the possibility of a major accident affecting the entire power system if the control is not effective. [0003] It is impossible to monitor every component of the power grid, which shows the necessity of key monitoring and stable operation control of key links in the operation of the power system. The key section of the power grid is the key object ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 王涛顾雪平贾京华梁海平高泽明刘艳杨兴宇李渝高成彬张尚
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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