Attack tolerance control method of direct current micro-grid under denial of service attack

Abstract

The attack tolerance control method for the direct-current micro-grid under the DoS attack comprises the steps of: establishing a direct-current micro-grid control system model under the DoS attack, wherein the direct-current micro-grid comprises Q constant-power load systems and an energy storage system; acquiring a condition for enabling the direct-current micro-grid control system model to operate stably; solving a gain matrix of the injection current controller, and determining the gain of the injection current controller; and constructing an injection current controller, and controlling the DC micro-grid according to the controller. According to the method, the system can be ensured to run safely and stably under the condition that DoS attacks possibly occur.

Description

technical field [0001] The invention belongs to the technical field of power system controller design, and in particular relates to an attack tolerance control method of a DC microgrid under a denial of service attack. Background technique [0002] In recent years, with the continuous improvement of users' attention to power supply reliability and power quality, the research and development of DC microgrid systems have attracted extensive attention from scholars at home and abroad. All kinds of distributed power sources in the microgrid, such as photovoltaic cells, wind generators and fuel cells, etc., mostly generate direct current (or non-power frequency alternating current); and commonly used electrical equipment, such as personal computers, electric vehicles, mobile phones, etc. And variable air conditioners also need to be converted into direct current drive through adapters in essence. Therefore, if the microgrid uses DC as the form of electric energy transmission, pa...

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Problems solved by technology

[0004] In the existing technology, such as the patent CN110277780A nonlinear DC microgrid elastic control method, the DC microgrid control to deal with DoS attacks is considered, but the method of augmenting the matrix is ​​used to deal with the nonlinear items, and at the same time, in order to save bandwidth resources, the Event trigger mechanism, and only based on the time-invariant Lyapunov analysis technique to obtain the conditions for the stable operation of the system model, but not applicable to the time-varying Lyapunov conditions, in addition, the controller gain matrix is ​​obtained directly based on the matrix contract transformation, resulting in When the patent is finally implemented, the calculation structure is complex, the calculation speed is slow, and the effect is not ideal

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