Error data injection attack defense method based on PMU deployment in smart power grid

Abstract

The invention relates to an intelligent power grid safety technology, in particular to an error data injection attack defense method based on PMU deployment in an intelligent power grid. The method comprises three stages of a new low-overhead hybrid attack mechanism, PMU pre-deployment of fragile nodes and PMU-based greedy strategy deployment of the whole network. In a stage of a new low-overheadhybrid attack mechanism, an attacker can attack a bus with low smart grid connectivity with low overhead to cause an error state estimation result. In a PMU pre-deployment stage of a fragile node, firstly, a bus which is most easily attacked is protected through PMU deployment. And in a PMU greedy strategy-based deployment stage of the whole network, according to the current attack vector, a PMU device is deployed on a bus capable of protecting the maximum number of measurement values in each round of deployment until the whole power grid is completely observable. According to the defense method provided by the invention, the attack overhead of an attacker is increased, and the deployment iteration process is reduced; after deployment is completed, effective defense of an error data injection attack is realized.

Description

technical field [0001] The invention relates to smart grid security technology, in particular to a method for defending against wrong data injection attacks based on PMU deployment in smart grids. Background technique [0002] Smart grid is a modern power network system. Smart grid makes the balance of supply and demand of electric energy more reliable, economical and sustainable by integrating information technology and communication technology. Compared with the traditional power network, an obvious feature of the smart grid is that a large amount of data is generated due to the two-way information interaction between the grid and users. The two-way information interaction among consumers, control center and control equipment makes energy supply and demand more efficient. On the power supply side, the equipment in the power system can be managed more intelligently, and the flexibility of power supply has also been greatly improved. On the user side, the user experience a...

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Problems solved by technology

[0005] Aiming at the problem that the existing error data injection attack defense method based on greedy policy PMU deployment in the smart grid fails in the face of new mixed error data injection attacks, the present invention proposes an error data injection based on PMU deployment in the smart grid attack defense method

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