Security control method for microgrid under network attacks

Abstract

The invention relates to a security control method for a microgrid under network attacks, and belongs to the field of power grids. The method comprises the following steps: S1, identifying a network attack type, and detecting by utilizing a cumulant-based network attack algorithm; S2, executing a periodic network attack defense decision; and S3, executing a random network attack defense decision.The network attack can be quickly discovered by utilizing the network attack algorithm based on the cumulant, the network attack can be timely dealt with, and the economic loss caused by wrong decision is avoided. An event triggering mode can reduce unnecessary state data transmission, the calculation efficiency is improved, and the utilization of limited communication resources is reduced. Damageof periodic network attacks to the microgrid is solved in time through the zero-pole configuration controller based on event triggering, damage of the microgrid network caused by random network attacks is solved through optimal control, the network attacks are effectively resisted, and normal operation of the microgrid is guaranteed.

Description

technical field [0001] The invention belongs to the field of power grids, and relates to a security control method for micro-grids under network attacks. Background technique [0002] In today's rapidly developing micro-grid system, since the distributed power generation units need to use the network communication layer to exchange information, if the information on the communication layer is threatened by the environment or malicious attacks, the stability of the micro-grid will be greatly reduced, and even cause The collapse of the entire system, while causing huge economic losses. Due to the recent rise of the micro-grid system, the existing technology is aimed at the physical layer of the micro-grid, making the micro-grid system more robust, achieving high-precision and more economical dispatch, and able to resist the physical layer of the micro-grid. Attacks, such as internal faults, weather reasons, power system environmental impact, etc. However, the network informat...

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Problems solved by technology

[0005] However, these technologies do not directly defend against network attacks. Due to the diversity of network attacks in the actual system, a strong topological network alone may not be able to withstand all attacks. It is only detected that information network security is being threatened. Unable to make technical decisions, manage and store information data in a safe and effective way, and cannot transmit information if there is a failure in the network topology

If the network information security control strategy for the microgrid is not made in time, the microgrid system will not be able to operate in a normal working state, the reliability of the microgrid system will be reduced, and once it is attacked, it will directly cause economic losses and security problems

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