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Evaluation method aiming at weak domain of area transmission network

A transmission network, fragile technology, applied in the field of assessment of regional transmission network vulnerable domains, can solve problems such as inappropriate automatic control equipment, misoperation or refusal to operate the power grid monitoring system

Inactive Publication Date: 2013-09-04
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is very complicated to analyze the reasons for the existence of vulnerable domains in the power grid, but the main factors may include defects in the physical structure of the power grid itself, inappropriate actions of various automatic control equipment (such as malfunction or refusal, etc.), and faults in the power grid monitoring system. Problems and other reasons

Method used

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  • Evaluation method aiming at weak domain of area transmission network
  • Evaluation method aiming at weak domain of area transmission network
  • Evaluation method aiming at weak domain of area transmission network

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Experimental program
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Embodiment

[0044] An assessment method for vulnerable domains of regional transmission networks, including the following steps:

[0045] S1 simplifies the regional transmission network into a topological model network;

[0046] Specific simplification rules:

[0047] Retain the high-voltage transmission network, specifically 220kV and above high-voltage lines, and do not consider the distribution network and the main wiring structure of power plants and substations when simplifying;

[0048] The nodes are all indifferent nodes, and the nodes include power plants, substations and intermediate electrical connection points;

[0049] All sides are undirected weighted sides, and all sides include transmission lines and transformer branches, regardless of other characteristic parameters and voltage levels of transmission lines;

[0050] The purpose of merging parallel transmission lines on the same pole and ignoring parallel capacitive branches is to eliminate self-loops and multiple edges a...

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Abstract

The invention discloses an evaluation method aiming at a weak domain of an area transmission network, which comprises the steps of S1, simplifying the area transmission network into a topology model network; S2, performing weight analysis on the nodes and lines in the topology model network to obtain the weights of nodes and edges in the network; and S3, listing the weights of the nodes and edges in the network, wherein the transmission lines with higher weight are the weak domain of the transmission network; and performing risk reconstructing. The evaluation method aiming at the weak domain of the area transmission network is capable of improving the power supplying reliability and prevents the large-sized voltage losing and power outage caused by a fault.

Description

technical field [0001] The invention relates to the field of transmission network risk assessment, in particular to an assessment method for the vulnerable domain of regional transmission network. Background technique [0002] The power grid is an important infrastructure in modern society, and the safe operation of the power grid has increasingly become an effective guarantee for the efficient operation of political and economic life in a modern civilized society. However, the collapse of the power grid and blackouts have always existed along with the development of the power grid and society. In recent years, there have been many blackouts in power systems all over the world, which have brought huge losses to society and economy. The frequent occurrence of large-scale blackouts has attracted great attention from the scientific and engineering circles. Analyzing the internal causes of large-scale blackouts and finding effective ways to prevent them have become hot topics. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/06
Inventor 刘刚张弦
Owner SOUTH CHINA UNIV OF TECH
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