Direct-current micro-grid multi-power spring passivity control method and system under false data injection attack

By constructing a passive control method for multi-power springs of DC microgrids under false data injection attacks, the stability problem of DC microgrids under false data injection attacks is solved, and the stable operation of the system during uncertainty perturbation and false data injection attacks is achieved and the bus voltage is stabilized.

CN119742732APending Publication Date: 2025-04-01SHANGHAI UNIVERSITY OF ELECTRIC POWER
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Patent Information

Application Number
CN202411857566.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-17
Publication Date
2025-04-01

AI Technical Summary

Technical Problem

The stability of the DC microgrid under false data injection attacks is threatened. The traditional PI control method has low stability margin and is difficult to resist time-varying false data injection attacks.

Method used

By constructing a passive control method for multi-power springs of DC microgrid under false data injection attack, it includes constructing a consistent control law, a Hamiltonian model of port controlled dissipation, a system expectation dynamic equation and its constraints, establishing a passive control law, and adjusting the working state of the multi-power spring according to this control law.

Benefits of technology

This method can maintain the stability of the DC microgrid bus voltage, ensure that the system operates stably during uncertainty disturbances and false data injection attacks, and effectively suppress the fluctuations in the microgrid bus voltage caused by uncertainty disturbances and false data injection attacks.

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Abstract

The invention relates to a direct current micro-grid multi-power spring passivity control method and system under false data injection attack. The method comprises the following steps: firstly, constructing a multi-power spring consistency control law of the DC micro-grid under the false data injection attack so as to obtain an effective value regulating variable of bus voltage of each node of the micro-grid; a port controlled dissipation Hamiltonian model is constructed; then, constructing a system expectation dynamic equation and constraint conditions thereof according to the bus voltage effective value adjusting quantity of each node of the micro-grid; a port controlled dissipation Hamiltonian model, a system expectation dynamic equation and constraint conditions are jointly analyzed, a passivity control law is established, and finally the working state of the multiple power springs is adjusted according to the passivity control law. Compared with the prior art, the method has the advantages that adverse effects caused by uncertainty disturbance and false data injection attacks are suppressed, the bus voltage of the direct-current micro-grid is stable, the calculated amount is small, response is fast, and the stability range is wide.
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