Event-triggered Intermittent Control Design And Its Application In Microgrid Frequency Control

In the actual system,most of the control methods are continuous or discrete.The discrete control method is mainly based on pulse control,while the continuous control is more inclined to classical state feedback control and PID control.However,if considering the cost and the actual environment,these control methods can not save the cost very well.Only when the system needs to be controlled,certain means are taken to control the system to ensure that the control is removed after the normal operation of the system,which can save the cost very well.Therefore,choosing intermittent control for research can save cost.In order to better analyze and study the system,the main research work of this paper is as follows:Firstly,the linear system of intermittent control is studied and analyzed,and the theory is used to prove that under the intermittent control mode,the system does not need to take control all the time,but also can reach a stable state,which solves the problem of reasonable resource allocation and saving,and can effectively solve the cost problem.In the analysis process,the cost function will be used to analyze the cost of the system under intermittent control,and compared with the cost of classical feedback control,so that we can clearly see the advantages and disadvantages of the two control methods.Secondly,this paper combines event triggering with intermittent control,which solves the control time problem of aperiodic intermittent control,and makes the control method more intelligent.The traditional aperiodic intermittent control mainly uses the bandwidth to adjust the initial time of each control,and there is not a lot of literature to give the corresponding algorithm for the initial time of each control.However,in this paper,the event triggered algorithm is combined in the intermittent control,so that the violation conditions and the average dwell time of the control can be set anytime and anywhere according to the needs of the system,making the control algorithm of the system more intelligent.In this paper,we also use the corresponding cost function to compare the cost of intermittent control combined with event triggering method and simple intermittent control method.According to the simulation results,we can determine the advantages and disadvantages of the algorithm.Finally,event triggering and intermittent control are applied in microgrid.Under the condition of ensuring the stability of microgrid system,relevant methods are used to prove that the method combining event triggering and intermittent control has excellent performance in microgrid,which indicates the corresponding academic value and practical significance of this study.