Intelligent power grid communication anomaly detection method based on time sequence

A smart grid communication and anomaly detection technology, applied to electrical components, circuit devices, data exchange networks, etc., can solve the problems of lack of anomaly monitoring and active defense devices, network communication lack of identification and two-way security verification mechanism, etc.

Active Publication Date: 2019-10-25
浙江双成电气有限公司 +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The increasing number of power grid attacks every year has exposed many security loopholes and hidden dangers of the current smart grid, such as the lack of identification and two-way security verification mechanisms in network communications, the lack of abnormal monitoring and active defense devices, etc.

Method used

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  • Intelligent power grid communication anomaly detection method based on time sequence
  • Intelligent power grid communication anomaly detection method based on time sequence
  • Intelligent power grid communication anomaly detection method based on time sequence

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Embodiment Construction

[0047] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0048] At the beginning of the construction of the power grid, similar to traditional industrial control systems, due to the natural physical isolation, information security was not focused on design. With the continuous advancement of informatization, devices are gradually interconnected and interoperable. Smart grids adopt device partitions, firewalls, and vertical encryption. It has certain security protection capabilities, but it is still unable to detect and defend against current cyber attacks of various scales, targeted and concealed. In view of the highly periodic and deterministic characteristics of smart grid telemetry, remote signaling, and remote control network communication, the present invention extracts the signal cycle through discrete Fourier transform based on th...

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Abstract

The invention relates to the technical field of intelligent power grids, and particularly relates to an intelligent power grid communication anomaly detection method based on a time sequence. The method comprises the following steps: for any normal communication network flow, determining a sequence position of each element in a period through a period overlapping mapping based on a period extraction method of discrete Fourier transform so as to determine a periodic time sequence relationship of each element in the normal network flow; obtaining the periodic time sequence relationship of each element in the to-be-detected network flow, and comparing the periodic time sequence relationship with the periodic time sequence relationship of each element in the normal network flow, so that anomaly detection of network communication is realized, and the method has very important significance for monitoring and detection of a strong periodic intelligent power grid control flow.

Description

technical field [0001] The invention relates to the technical field of smart grids, in particular to a time-series-based smart grid communication anomaly detection method. Background technique [0002] In the past few decades, the emergence and development of the smart grid has greatly improved the efficiency of the power system in various stages of power generation, transmission, and distribution. The original physical isolation has been broken, potential risk points have increased, and the power grid is facing more and more cyber security threats, which will certainly threaten national security. Globally, the number of attacks against smart grids is increasing year by year, with increasing methods and escalating consequences, causing huge losses to society and the economy, including the "Ukraine Power Grid" incident in 2015, which was attacked by hackers and caused seven 110KV and 23 35KV substations were interrupted for up to 3 hours; in 2018, the United States first pub...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/26H02J13/00
CPCH02J13/0013H04L63/1416H04L63/1425H04L43/16
Inventor 赵刚杨才明陈建平蒋正威沈祥章立宗陶涛周华严利锋杜奇伟陈培东张锋明周进李博葛彬彬
Owner 浙江双成电气有限公司
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