False data injection attack defense method based on pmu deployment in smart grid

Abstract

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 the smart grid. The method includes three stages: a new low-overhead hybrid attack mechanism, PMU pre-deployment on vulnerable nodes, and PMU-based greedy strategy deployment for the entire network. In the stage of the new low-overhead hybrid attack mechanism, the attacker can use lower overhead to attack the busbar with a small connection degree of the smart grid to cause wrong state estimation results. In the PMU pre-deployment phase of vulnerable nodes, the most vulnerable bus is firstly protected through PMU deployment. In the deployment phase of the entire network based on the PMU greedy strategy, according to the current attack vector, a PMU device is deployed on the busbar that can protect the maximum number of measured values ​​in each round of deployment until the entire power grid is fully observable. The defense method proposed by the invention enables the attacker to increase the attack cost, and at the same time reduces the deployment iterative process, and realizes the effective defense against the wrong data injection attack after the deployment is completed.

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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