Safety control method of multi-machine power system load frequency control system based on Markov jump model under DoS attack
A load frequency control, electromechanical system technology, applied in the direction of circuit devices, AC network circuits, reducing/preventing power oscillation, etc., can solve problems such as occupying communication channels, blocking normal communication, and unstable jumping systems, etc. The effect of transmission pressure and saving network bandwidth resources
Inactive Publication Date: 2020-08-07
NANJING UNIV OF POSTS & TELECOMM
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Among them, the denial of service attack is most likely to occur, and its purpose is to occupy the communication channel and block the normal communication, thus causing the instability of the jump system
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[0025] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with examples, which are only used to explain the present invention and do not constitute a limitation to the protection scope of the present invention. Such as Figure 1-3 As shown, this embodiment provides a multi-machine power system load frequency control system based on the Markov jump model under a DoS attack, which may specifically include the following steps:
[0026] S101: Establish a mathematical model of a multi-machine power system load frequency control system under a DoS attack.
[0027]
[0028] Where {r(t), t>0} is the value of the finite set S={1,2,L,K} continuous Markov process. When there are generator output changes, load power fluctuations, operation mode adjustments, and operating parameter changes in the power system, the state equation will switch between different modes, and the switching rate is determined by r...
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The invention provides a safety control method for a multi-machine power system load frequency control system based on a Markov jump model under DoS attack. The method comprises the following steps establishing a mathematical model of the load frequency control system of the multi-machine power system based on the Markov jump model; introducing an unknown period DoS attack, and establishing a mathematical model of the multi-machine power system load frequency control system based on the Markov jump model under the DoS attack; introducing an elastic event triggering mechanism, and establishinga mathematical model of the multi-machine power system load frequency control system based on the Markov jump model and the event triggering mechanism under the DoS attack; solving a trigger matrix and a control gain matrix; and establishing a controller of the multi-machine power system under the DoS attack. Stable and safe operation of the system is ensured, the transmission quantity of redundant signals is reduced, the transmission pressure of a communication network is reduced, and limited network bandwidth resources are saved.
Description
technical field [0001] The invention relates to the field of power system controllers, in particular to a safety control method for a multi-machine power system load frequency control system based on a Markov jump model under DoS attacks. Background technique [0002] In recent years, while the safety control of networked control systems has become a research hotspot in the field of automatic control, the safety control of Markovian jump systems has gradually received widespread attention. Markov jump system is the generalization of general system from single mode to multi-mode, it can describe a large number of practical systems, and has been widely used in power systems. At the same time, as the degree of openness of the network becomes higher and higher, the possibility of malicious attacks increases accordingly. Network attacks are mainly divided into spoofing attacks and denial of service attacks. Among them, the denial of service attack is most likely to occur, and i...
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IPC IPC(8): H02J3/24
CPCH02J3/24H02J2203/20
Inventor 胡松林姜震韬岳东解相朋丁磊
Owner NANJING UNIV OF POSTS & TELECOMM