Method for automatically acquiring key sections based on electrical partitioning

A technology for electrical partitioning and key sections, applied to electrical components, circuit devices, AC network circuits, etc., can solve problems that affect the precision and accuracy of fine rules, and achieve the effect of improving the degree of refinement and online adaptability

Active Publication Date: 2011-02-16
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently a lack of a method that can obtain key sections of the power grid online, and only rely on

Method used

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  • Method for automatically acquiring key sections based on electrical partitioning
  • Method for automatically acquiring key sections based on electrical partitioning
  • Method for automatically acquiring key sections based on electrical partitioning

Examples

Experimental program
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Embodiment

[0057] Utilize the method for automatically acquiring key sections based on electrical partitions proposed by the present invention to automatically acquire the key sections of the power grid in province A at a certain moment, the steps and results are as follows:

[0058] 1) Topology search and classification of plants and stations: use topology search to establish the connection relationship between plants and stations in the power grid of province A, and use plants and stations as vertices and transmission lines as edges to form a network N, and divide plants and stations into rings according to network N There are two types of plant stations and non-circular plant stations, and the numbers of the two types of plant stations are shown in Table 1;

[0059] Table 1 Classification of Power Grid Plants and Stations in Province A at a certain time

[0060] category

Number

Huan Shang Chang Station

236

Non-Huan Shangchang Station

82

[...

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Abstract

The invention relates to a method for automatically acquiring key sections based on electrical partitioning, which belongs to the technical field of operation and control of electric systems. The method comprises the following steps: establishing a relation of connection among substations in a power grid by using topological research, and forming a network N by taking the substations as vertexes and taking transmission lines as edges; generating an impedance matrix Z of the network N by using a branch-adding method, and obtaining the electric distances among the substations; partitioning the network N into multiple electrical partitions and adjusting the partitions according to the geographical distribution of the substations in the network N; obtaining initial sections according to a graph theory; screening the initial sections and than obtaining transmission sections; and judging the safety margins of the transmission sections so as to obtain the key sections. The method of the invention can better adapt to the increasingly volatile operation modes of the power grid, provides more accurate transmission sections for online fine-rule-making, and improves the fineness degrees and online adaptability of fine rules.

Description

technical field [0001] The invention belongs to the technical field of power system operation and control, in particular to an automatic acquisition method for key sections based on electrical partitions. Background technique [0002] In order to ensure the safe and stable operation of the power grid, the power system operation department generally formulates the operation rules of the power grid, and limits the operation space of the power grid to the space specified in the operation rules. Operation rules are generally formulated on a specific section to achieve "dimension reduction" control of complex power systems. A section is a combination of some transmission lines in the power grid that have the same flow direction and are prone to overload. It is an important safety feature of the large power grid, reflecting the weak link of the power grid at a certain moment, and is a transmission bottleneck that has an important impact on the safety of the power grid. [0003] T...

Claims

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Application Information

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IPC IPC(8): H02J3/00
Inventor 孙宏斌张伯明吴文传郭庆来赵峰
Owner TSINGHUA UNIV
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