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Method for determining the importance of power information network data transmission channel under denial of service attack

A denial of service attack, network data transmission technology, applied in digital transmission systems, transmission systems, electrical components, etc., can solve problems such as the lack of influence of grid topology and state in the evolution process, and the failure to consider the impact of network attacks on grid cascading failures.

Active Publication Date: 2022-08-05
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] To sum up, the current cascading failure model mainly considers the operating state and power flow characteristics of the power grid, and does not consider the impact of network attacks on the cascading failures of the power grid, the evolution process of cascading failures after the power grid is attacked by a network, and the topology and state of the power grid. There is a clear deficiency in the impact analysis of

Method used

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  • Method for determining the importance of power information network data transmission channel under denial of service attack
  • Method for determining the importance of power information network data transmission channel under denial of service attack
  • Method for determining the importance of power information network data transmission channel under denial of service attack

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Embodiment 1

[0078] like figure 1 A method for judging the importance of a data transmission channel of a power information network under a denial of service attack is characterized in that: by constructing a cascading failure model in which a denial of service attack is added to the uplink and downlink communication channels of the power communication network, simulating the denial of service attack The dynamic evolution process of grid cascading failures when the overload information of grid lines and the dispatch information issued by the control center are lost due to service attacks; and the vulnerability calculation of the grid after the cascading failure ends, including the calculation of grid structure vulnerability and state vulnerability indicators , to determine which position of the data transmission channel of the denial-of-service attack on the power information network has the greatest impact on the power grid.

[0079] The method of this embodiment adds a denial of service ...

Embodiment 2

[0081] A method for judging the importance of power information network data transmission channel under denial of service attack is invented, and the steps are as follows:

[0082] Step 1: Initialize the power network, input the relevant information of the power grid, and set the load loss rate threshold η max ;

[0083] Step 2, randomly select a line in the power grid to remove, as the initial fault of the power grid, and trigger the cascading failure of the power grid;

[0084] Step 3, determine whether the power grid load loss rate is greater than the set threshold; if so, the cascading failure is over, and the vulnerability settlement is performed on the remaining power grid; otherwise, step 4 is performed;

[0085] Step 4: When the initial fault of the line causes some lines of the power grid to be overloaded, the power grid uploads the line overload information to the dispatch center. Join the denial of service attack on the upstream channel or the downstream channel; ...

Embodiment 3

[0132] A method for determining the importance of a power information network data transmission channel under a denial of service attack, comprising the following steps:

[0133] Step 1: Initialize the power network, input the relevant information of the power grid, and set the load loss rate threshold η max ;

[0134] Step 2, randomly select a line in the power grid to remove, as the initial fault of the power grid, and trigger the cascading failure of the power grid;

[0135] Step 3, determine whether the power grid load loss rate is greater than the set threshold; if so, the cascading failure is over, and the vulnerability settlement is performed on the remaining power grid; otherwise, step 4 is performed;

[0136] Step 4: When the initial fault of the line causes some lines of the power grid to be overloaded, the power grid uploads the line overload information to the dispatch center. Join the denial of service attack on the upstream channel or the downstream channel;

...

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Abstract

The present invention provides a method for judging the importance of power information network data transmission channel under denial-of-service attack. By constructing a cascading failure model in which denial-of-service attack is added to the uplink and downlink communication channels of the power communication network, it simulates that the denial-of-service attack causes the power grid to fail. Dynamic evolution process of power grid cascading failures when the line overload information and dispatching information issued by the control center are lost; and the vulnerability calculation of the power grid after the cascading failure ends, including the calculation of power grid structural vulnerability and state vulnerability indicators, to determine denial of service Which position of the data transmission channel of the power information network is attacked has the greatest impact on the power grid. The invention can protect the data transmission channel of the electric power information network in advance, prevent the occurrence of a large power outage accident caused by a denial of service attack, and improve the practicability of the cascading failure model.

Description

technical field [0001] The invention relates to the field of power communication network security, power network cascading failure modeling and power grid vulnerability analysis and evaluation, in particular to a method for judging the importance of power information network data transmission channels under denial-of-service attacks. Background technique [0002] With the construction and development of smart grid, the research on key technologies of smart grid at home and abroad has developed into various aspects such as hardware, software, policy and standard system. Modern smart grid is a typical cyber-physical fusion system. It integrates a large number of sensing and measurement equipment and communication equipment on the basis of traditional power network and communication network, and the connection between power network and communication network is more closely. The development of the power cyber-physical fusion system enables the dispatch center of the power networ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/40
CPCH04L63/1433H04L63/1458
Inventor 李雪戚知婷
Owner SHANGHAI UNIV
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