Power network information physical potential safety hazard assessment method and system, and power system

Abstract

The invention discloses a power network information physical potential safety hazard assessment method, a power network information physical potential safety hazard assessment system and a power system. The power network information physical potential safety hazard assessment method comprises the steps of: comprehensively considering a basic index, a time index and a network attack capability index, and calculating high-risk vulnerability availability of power information equipment; establishing a power information equipment network security vulnerability assessment model, and calculating an attack success probability of defense measures of the power information equipment; establishing a network attack graph model according to the high-risk vulnerability availability of the power information equipment and the attack success probability of the defense measures of the power information equipment, and calculating an attack success probability of the power information equipment; and establishing a power information equipment-physical element failure association model, and assessing physical consequences caused by network attacks on the power information equipment. The power network information physical potential safety hazard assessment method overcomes the defects that an existing method is insufficient in attack behavior analysis and lacks consideration of power business features, and improves the accuracy and credibility of power network potential safety hazard risk assessment.

Description

technical field [0001] The invention relates to the field of power system network security analysis, in particular to a power network information physical security risk assessment method, system and power system. Background technique [0002] The safe operation of the power system is directly related to the national economy and national security. The in-depth application of information and communication technology in the power system has exposed more and more hidden dangers and loopholes in the current power network system, making it more vulnerable to network attacks. Malicious attackers can use the high-risk hidden vulnerabilities of the system to launch network attacks to gain control of the main control computer through email spoofing, phishing and other leakage methods, and then send malicious control instructions to the primary device, causing the primary device to malfunction and cause the line to be disconnected. A series of serious safety accidents such as line faul...

AI Technical Summary

Problems solved by technology

[0003] However, there are many shortcomings in the current power network hidden danger assessment method: 1) lack of in-depth analysis of the behavior characteristics of the attacker, and do not fully consider factors such as time factors and network attack capabilities that reflect the game relationship between the attacker and the defender

2) In addition, the current evaluation method only considers the exploitability of high-risk vulnerabilities, ignoring the security risk probability of the network security defense measures and the transmission risk probability of t...

Images