Controller Design Of Isolated Hybrid Wind-diesel Power System Under DoS Jamming Attacks

With the development of the existing technologies,the combined operation of renewable energy such as wind energy and diesel power stations can save a large amount of fuel and improve the efficiency of power supply while protecting the environment.Safety and stability are the basis of power grid operation.Isolated hybrid wind-diesel power system is of great significance to the lives,economy,and politics of local people.Therefore,the stability of the isolated hybrid wind-diesel power system has been widely concerned.In the actual production process,the isolated hybrid wind-diesel power system has the advantages of high reliability and low cost.However,due to the randomness of wind energy,load variability,sudden equipment failure,unknow external interference and the openness of the wireless network and other factors,many problems cannot be ignored.This paper mainly studies the control of isolated hybrid wind-diesel power system under different types of denial of service(Do S)attacks and actuator saturation.The H_?stability of the isolated hybrid wind-diesel power system is mainly analyzed,and the corresponding event-triggered controller is designed.Performed numerical simulation and other work.Specifically,it includes the following aspects:First,the problem of load frequency control for isolated hybrid wind-diesel power system based on resilient event-triggered communication under periodic Do S interference attacks is studied.The resilient event-triggered communication mechanism is introduced to avoid unnecessary signal transmission in the isolated hybrid wind-diesel power system,thus saving network bandwidth resources.In a unified framework,a switching system model is established which can describe both the resilient event-triggered mechanism and periodic Do S jamming attacks.Based on the analysis of the model,the sufficient conditions for the exponential stability of the isolated hybrid wind-diesel power system are given by using the piecewise Lyapunov function method,and the resilient event-triggered mechanism and the cooperative design method of the controller are considered respectively.Simulation results show the effectiveness of the proposed method.Secondly,considering the randomness of Do S jamming attacks,an event-triggered communication mechanism is proposed for intermittent Do S jamming attacks,so that the isolated hybrid wind-diesel power system can effectively reduce network bandwidth resources and resist the data loss caused by intermittent Do S jamming attacks to some extent.In addition,a controller based robust stability analysis method is proposed,which uses Lyapunov stability theory and knowledge of linear matrix inequality to analyze the H_?stability of the isolated hybrid wind-diesel power system.The effectiveness of the proposed method is verified by a simulation example.Finally,based on the above studies,the isolated hybrid wind-diesel power system is studied in the case of intermittent Do S jamming attacks and actuator saturation.Considering the current situation of limited bandwidth resources,this chapter also describes the event-triggered mechanism,and provides a collaborative design method of the event-triggered mechanism and the controller in the case of the actuator saturation.Numerical simulation shows that this method can play a significant role.