Moving target defense response method guided by economic and security requirements

Abstract

The invention discloses a moving target defense response method guided by economic and security requirements. The method is characterized in that the method comprises the steps of S01 collecting maindata of a system; S02 preprocessing the acquired data; S03 detecting the required action quantity; S04 periodically working; S05 carrying out an initial action strategy; S06 checking a detection strategy; S07 detecting attack quantity; S08 carrying out a safety plan; S09 generating a defense strategy; S10 carrying out power grid operation constraint detection; S11 implementing a strategy; and S12carrying out attack quantity detection. According to the method, the security requirement is added into periodic power flow adjustment of the D-FACTS equipment due to the economic requirement of thepower grid; under the condition that the operation state of the power grid is not influenced, line parameters related to fragile nodes are properly changed to detect bad data; when abnormal data are detected, the D-FACTS equipment is enabled to enter a more comprehensive and larger-amplitude response state according to the safety plan; and whether FDI attacks exist in the system can be rapidly andeffectively judged on the premise of ensuring economy.

Description

technical field [0001] The invention relates to the technical field of power grid attack detection, in particular to a method for responding to a flexible AC transmission system in defense of moving targets guided by economic and security requirements. Background technique [0002] Since False Data Injection Attack (FDIK) against power systems was proposed, scholars have done a lot of research in this field, and in recent years, information attacks against industrial control systems represented by power grids have occurred frequently. How to meet the requirements of the system to deal with information attacks on the premise of ensuring the normal operation of the industrial control system is one of the hot issues in the field of industrial control system research. [0003] Aiming at the common problem of current network security - easy to attack and difficult to defend, the "game-changing" technology proposed by the United States to achieve proactive network defense, among w...

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a kind of economical and security demand-guided mobile target defense response method, which is used to solve the response problem of D-FACTS equipment when applying MTD technology to deal with FDI attacks in the power grid, in a fast and effective manner While defending against FDI attacks, it ensures the normal economic operation of the power grid and solves the problem of high economic costs when MTD technology is applied to power grid information security issues

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