Smart grid malicious data injection attack and detection method

Abstract

The invention provides a smart grid malicious data injection attack and detection method, belongs to the field of smart grid data information safety, and aims at solving an existing technology has the defects if smart grid measurement data are subjected to malicious data injection attack by hackers. The method comprises the following steps: firstly converting the malicious data injection attack in an alternating current model into the malicious data injection attack in a direct current model by attacking few phasor measurement units (PMUs) in a grid so as to construct a new smart grid malicious data injection attack manner; and aiming at the new attack manner, providing two detection operators based on forecast measurement and estimation measurement residual for detecting, positioning and judging malicious injection data possibly existing in power system measurement information, and performing relative update data process to ensure that the smart grid runs relatively stably, safely and reliably. The smart grid malicious data injection attack and detection method can be achieved after the original grid architecture is subjected to relatively slight technological transformation and upgrade, so that the practical economic value and the operability are achieved.

Description

technical field [0001] The invention belongs to the field of smart grid data information security, in particular to a smart grid malicious data injection attack and detection method. Background technique [0002] Modern smart grids use state estimation theory to obtain the best estimate of the current state of the power system from error-containing telemetry data (active and reactive power injection measurements, active and reactive power flow measurements, voltage measurements), and eliminate errors that occur in the system. It provides real-time and accurate operation data for the online analysis and control of the power system. Therefore, effectively eliminating erroneous data in telemetry data and defending against hackers' malicious data injection attacks are the primary conditions for the safe and stable operation of smart grids. Although after years of development, a relatively complete theoretical system of bad data detection and identification has been established ...

AI Technical Summary

Problems solved by technology

[0003] Although some literatures have proposed some detection algorithms for the DC transmission model of the smart grid and achieved certain results, but for the more practical AC transmission model of the power grid, no effective detection algorithm has been proposed.

Images