Power system reliability evaluation method, device and system considering LR attack

A power system and reliability technology, applied in the field of power system reliability assessment considering LR attack, can solve the problems of lack of reliability assessment methods for power system considering LR attack, lack of etc.

Pending Publication Date: 2021-07-02
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is a lack of research on defense measures against LR attacks, and there is also a lack of research on power system reliability assessment methods that consider LR attacks and defense measures.

Method used

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  • Power system reliability evaluation method, device and system considering LR attack
  • Power system reliability evaluation method, device and system considering LR attack
  • Power system reliability evaluation method, device and system considering LR attack

Examples

Experimental program
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Effect test

Embodiment 1

[0148] An embodiment of the present invention provides a power system reliability assessment method considering LR attacks, including the following steps: First, parameter initialization: input system network topology parameters, electrical parameters of generators and lines, load parameters, generator unavailable degree parameter, line unavailability parameter; secondly, calculate the transmission line utilization rate, and identify the vulnerable line in the system; then, obtain the load shedding model considering LR attack and vulnerable line defense, the vulnerable line power flow in the load shedding model The constraints are related to the identified vulnerable lines; then, based on the preset stochastic process model of LR attack, the success probability of LR attack is calculated; finally, based on the load reduction model and the success probability of LR attack, non-sequential Monte Carlo Methods evaluate power system reliability considering LR attacks.

[0149] Such...

Embodiment 2

[0270] Based on the same inventive concept as in Embodiment 1, an embodiment of the present invention provides a power system reliability evaluation device considering LR attacks, including:

[0271] Initialization module for parameter initialization;

[0272] The first calculation module is used to calculate the utilization rate of transmission lines and identify vulnerable lines in the system;

[0273] An acquisition module, configured to acquire a load reduction model considering LR attacks and vulnerable line defenses, where the power flow constraints of the vulnerable lines in the load reduction model are related to the identified vulnerable lines;

[0274] The second calculation module is used to calculate the success probability of the LR attack based on the preset stochastic process model of the LR attack;

[0275] An evaluation module, configured to use a non-sequential Monte Carlo method to evaluate the reliability of the power system considering the LR attack based...

Embodiment 3

[0278] An embodiment of the present invention provides a power system reliability evaluation system considering LR attacks, including a storage medium and a processor;

[0279] The storage medium is used to store instructions;

[0280] The processor is configured to operate according to the instructions to perform the method according to any one of the methods in Embodiment 1.

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Abstract

The invention discloses a power system reliability evaluation method, device and system considering an LR attack. The method comprises the following steps: initializing parameters; calculating the utilization rate of the power transmission line, and identifying a fragile line in the system; obtaining a load reduction model considering LR attack and fragile line defense, wherein the fragile line power flow constraint in the load reduction model is related to the identified fragile line; calculating the success probability of the LR attack based on a preset random process model of the LR attack; and based on the load reduction model and the LR attack success probability, evaluating the reliability of the power system considering the LR attack by using a non-sequential Monte Carlo method. According to the method, power system reliability evaluation considering LR attacks and defensive measures thereof is realized.

Description

technical field [0001] The invention belongs to the technical field of power system analysis, and in particular relates to a power system reliability evaluation method, device and system considering LR attacks. Background technique [0002] With the rapid development of the smart grid, advanced measurement infrastructure, flexible control equipment and efficient information and communication technology have been widely used in the power system, and the physical system and information technology are highly integrated to form a power cyber-physical fusion system. It provides favorable conditions for efficient allocation of power resources and real-time analysis of the system. However, the possible security loopholes in widely distributed measurement facilities and communication networks also pose potential threats to the safe operation of the power grid. For example, the blackout in Ukraine in 2015 and the blackout in Venezuela in 2019 are all cyber attacks. A typical case of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/18G06F111/02G06F111/04G06F111/08G06F113/04G06F119/02
CPCG06F30/18G06F2111/02G06F2111/04G06F2111/08G06F2113/04G06F2119/02
Inventor 陈凡史杰刘海涛赵美莲张乐涛王曼
Owner NANJING INST OF TECH
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