White-box detection method for single point data attack in power system

Abstract

The invention discloses a white-box detection method for a single-point data attack in a power system, aiming at behaviors in which only a single data is subjected to malicious attacks. The method obtains the function value range after establishing the function definition domain and defining the function program, and compares the change of the function value range under the operation of a complete set of control logic relationship functions to find malicious attack points. The invention is composed of a power system data input module, a control logic module, an automatic identification module, an output module, a judgment module, and a feedback module. Through the two modules of the control logic module and the automatic identification module, layer-by-layer verification is completed, and single-point maliciousness is automatically identified. The location of the attack. This detection method makes up for the limitation that the bad data identification algorithm in current power system state estimation cannot detect specific linear attacks.

Description

technical field [0001] The invention relates to the field of power system security, in particular to a white-box detection method for single-point data attacks in the power system. Background technique [0002] Modern power system is a complex coupling network system composed of physical power system and information communication system. That is to say, the failure or attack of components in any of these two systems may lead to the paralysis of the power grid. [0003] Malicious data attacks on power systems have attracted the most attention internationally in the past two years. This attack method first appeared in the Stuxnet virus in Iran, which caused the Iranian nuclear power plant to shut down. The essence of the attack is to pretend to be a legitimate user to enter the system, affect relevant data, obtain the controller, and further cause a large-scale power outage through the system influence of the power system to achieve the purpose of attacking the system. [00...

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Problems solved by technology

These patents mainly use state estimation algorithms, which have the disadvantage of being difficult to identify linear intrusion attacks

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