Power system information physical double-layer strategy optimization method considering network attack influence

Abstract

The invention discloses a power system information physical double-layer strategy optimization method considering network attack influence, and belongs to the technical field of power generation, power transformation or power distribution. The method comprises the following steps: modeling an electric power information physical system based on an incidence matrix method; forming a mathematical vector by using a known network attack mechanism, and analyzing attack influence based on a power information physical system association model; on the basis of the influence of attacks on the physical side and the information side of a power system, an existing control strategy is judged firstly for the safety and stability control service of the power system, and if the judgment result is feasible,execution is performed; if the method is not feasible, optimizing a load reduction optimization strategy of a physical side according to the attack influence; and optimizing the strategy transmissionpath on the basis of upper-layer optimization, and finally obtaining an information physical coordination optimal control strategy of the network attack scene. According to the invention, an information physical cooperative control strategy under a network attack can be formed, and a better control effect is realized.

Description

technical field [0001] The invention relates to power system network security technology, in particular to a power system cyber-physical double-layer strategy optimization method considering the influence of network attacks, belonging to the technical field of power generation, power transformation or power distribution. Background technique [0002] As one of the most important infrastructures in modern society, the power system has been deeply integrated with the communication system and has become a typical cyber physical system (Cyber ​​Physical System, CPS). On the one hand, the power grid has become more intelligent; on the other hand, it also brings potential risks of cyber attacks. Vulnerabilities in control equipment and communication links can be exploited to destroy control and measurement signals to interfere with control commands and achieve cyber attacks on power systems. If the operator does not consider the impact of the attack and still operates the power s...

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Problems solved by technology

[0004] The purpose of the present invention is to address the shortcomings of the above-mentioned background technology, provide a power system information-physical double-layer strategy optimization method that considers the impact of network attacks, realize the online optimization of the physical information double-layer strategy, and solve the problem of existing physical-side control strategies. The technical problem that the expected control effect cannot be achieved under the influence of the attack

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