Network security prevention method based on security situation awareness and risk assessment

Abstract

The invention discloses a space-time multi-dimensional cooperative prevention method based on security situation awareness and risk assessment, which comprises the following steps: 1) preprocessing network security data of each node of a smart power grid to obtain situation features of potential network attacks; 2) obtaining evaluation index data of a panoramic collaborative letter security risk evaluation system, according to the situation characteristics of the potential network attack, performing quantitative representation on each evaluation index in the panoramic collaborative letter security risk evaluation system to obtain a space-time multi-dimensional risk evaluation quantitative index, and calculating a panoramic collaborative letter security risk evaluation value according to the space-time multi-dimensional risk evaluation quantitative index; and 3) optimizing the safety performance indexes of the voltage and frequency of each node of the multi-space-time scale physical power grid by using a robust fault-tolerant control method. The method can accurately predict and evaluate the influence of the network attack safety in real time, and effectively perform space-time multi-dimensional cooperative prevention and response on the network attack safety.

Description

technical field [0001] The invention belongs to the technical field of smart grid security defense, and in particular relates to a network security prevention method based on security situation awareness and risk assessment. Background technique [0002] In recent years, there have been endless security incidents caused by smart grid attacks caused by cyber attacks. At the end of 2015, the Ukrainian power grid was attacked by a network, which resulted in the failure of the energy management system and eventually led to the interruption of power supply. It became the first large-scale power outage caused by a network attack in history. In 2016, Israel's electricity supply system was hit by a major cyber attack, forcing a large number of computers in the electricity supply system to go offline, among other things. Many such accidents show that the token security issues caused by cyber attacks cannot be ignored. In the token-coupled smart grid, this problem is particularly pro...

AI Technical Summary

Problems solved by technology

Many such accidents show that the token security issues caused by cyber attacks cannot be ignored. In the token-coupled smart grid, this problem is particularly prominent and needs to be solved urgently.

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