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Power system attacked measurement data two-layer restoration method based on data driving

A technology for measuring data and power systems, which is applied in the field of data-driven second-layer repair of attacked measurement data in power systems.

Pending Publication Date: 2022-04-19
YANSHAN UNIV +1
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a data-driven two-layer repair method for power system attacked measurement data. The problem of separating damaged measurement data and rebuilding and repairing it

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  • Power system attacked measurement data two-layer restoration method based on data driving
  • Power system attacked measurement data two-layer restoration method based on data driving
  • Power system attacked measurement data two-layer restoration method based on data driving

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Embodiment Construction

[0047] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0048] It should be noted that in the present invention: the English of false data injection attack is: false data injection attack, abbreviated as FDIA, for the convenience of expression, the following places related to false data injection attack are expressed as FDIA;

[0049] The English abbreviation of multidimensional scaling method is MDS; the English name of Federal Forest is: Federated Forest;

[0050] The English abbreviation of Conditional Boundary Equilibrium Generative Adversarial Network is CBEGAN. For the convenience of expression, the following parts related to Conditional Boundary Equilibrium Generative Adversarial Network are expressed as CBEGAN.

[0051] Such as Figure 1~3 As shown, a data-driven method for repairing the second-layer measurement data of the power system under attack includes the following steps:

[0052] Step 1. Obtain the networ...

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Abstract

The invention discloses a data-driven power system attacked measurement data two-layer restoration method, and relates to the field of power system operation safety maintenance, and the method comprises the steps: building a measurement regression model under each topological structure according to the network parameter information of a regional power grid, and simulating an attacked measurement vector under an FDIA working condition; separating attacked data on the upper layer by using a multi-dimensional scaling method for dimension reduction in combination with a federal forest algorithm; inputting the separated normal data into a generator G of the improved CBEGAN at the lower layer to generate data G (z); the G (z) and a historical measurement regression model are injected into a discriminator D, and authenticity is distinguished by calculating a Hellinger distance between reconstruction error distributions of a real sample and a generated sample; convergence is judged through the target M, and finally data restoration is achieved. According to the method, the measurement data can be effectively restored on the basis of the residual normal data, the self-healing capability of the power grid after being attacked is realized, and the method has relatively good measurement convergence, control distribution diversity and practicability.

Description

technical field [0001] The invention relates to the technical field of power system operation safety maintenance, in particular to a data-driven two-layer repair method for the attacked measurement data of the power system. Background technique [0002] The essence of false data injection attack (FDIA) is a data integrity information attack. Attackers can inject false data into the power measurement data in a variety of ways, exploit the loopholes in the detection of bad state estimation data, and bypass the detection to carry out attacks, which are extremely concealed and extremely harmful to the stable operation of the power system. Therefore, in order to mitigate or deal with the harm caused by false data injection attacks, it is necessary not only to have the detection function, but also to separate and repair the tampered measurement data. [0003] In terms of separation, most of the current research is to detect and separate abnormal data in a power grid topology, wit...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/215G06K9/62G06Q50/06
CPCG06F16/215G06Q50/06G06F18/2433G06F18/24323
Inventor 曲正伟杨京川郎燕生王云静韩晓明王淼马晓忱
Owner YANSHAN UNIV
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