Network attack optimization method and system for information physical system of power distribution network

By constructing a two-layer attack and defense optimization model, the problem of lack of analysis of the interaction and decision-making process between the attacker and the defender in existing technologies is solved, a comprehensive assessment and rapid recovery of distribution network network attacks are achieved, effective defense strategies and re-dispatching solutions are provided, and the security resilience of the distribution network is improved.

CN120639468AActive Publication Date: 2025-09-12NORTH CHINA ELECTRIC POWER UNIV
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Patent Information

Application Number
CN202510997971.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-20
Publication Date
2025-09-12
Estimated Expiration
2045-07-20

AI Technical Summary

Technical Problem

Existing research on distribution network attack strategies lacks in-depth analysis of the interaction and decision-making process between the attacker and the defender, resulting in a disconnect between the protection scheme and the actual dynamic threat, and is unable to fully and accurately reveal the operating characteristics of the distribution network's cyber-physical system under a cyber attack environment.

Method used

A two-layer attack and defense optimization model is constructed, including an upper-layer attack model and a lower-layer re-dispatching model. The decision-making process of attackers and dispatchers is simulated, and it is converted into a mixed integer linear programming problem through the Kuhn-Tucker condition for solution to determine the vulnerable links of the distribution network and the optimal re-dispatching strategy.

Benefits of technology

It achieves a comprehensive and accurate assessment of network attacks on distribution networks, provides effective defense strategies, and quickly formulates optimal redispatching plans for distributed power sources and energy storage systems, reducing economic losses and ensuring that distribution networks quickly resume normal operations.

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Abstract

The invention relates to the field of power distribution network system protection, and discloses a power distribution network cyber-physical system network attack optimization method which comprises the following steps: S1, establishing an upper-layer attack model which is used for simulating a decision of an attacker for causing the maximum load loss under the constraint of limited attack resources; s2, establishing a lower-layer rescheduling model, wherein the lower-layer rescheduling model is used for simulating a response decision taking minimization of load shedding loss and scheduling cost as targets after a power distribution network dispatcher is attacked; and S3, constructing an attack and defense double-layer optimization model combining the upper-layer attack model and the lower-layer rescheduling model. Through sequential logic based on attack and defense, the first stage starts from the perspective of attackers to maximize attack consequences and minimize attack cost, and the second stage minimizes scheduling and operation cost from the perspective of dispatchers to guarantee power supply of key users, so that the influence of network attacks on the power distribution network is comprehensively and accurately evaluated.
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