Optimal Scheduling And Control Strategy Of Wind Farm Considering Network Attack

With the development of smart grids,the trend of integrated power communication is becoming increasingly evident,and traditional physical grids are gradually developing into grid information physical systems.At the same time,the extensive access of new energy stations brings uncertainty to the power generation side of the power system due to the fluctuation and randomness of their output.The access of distributed measurement and control devices also enriches the power communication business,while also bringing uncertainty to the communication network side such as network attacks.At present,research has mostly focused on analyzing traditional Internet attacks and developing relevant defense strategies.However,there is a close coupling between the control of new energy stations and the power communication network.Once invaded,incorrect judgments and control instructions can mislead new energy stations into making incorrect feedback and operations,thereby affecting the scheduling and control of subsequent power systems.Therefore,it is necessary to study the impact and defense control strategies of attacks on new energy stations based on the generation,propagation,and destruction mechanisms of attacks in the physical space of power grid information,in order to provide guarantees for the safe and stable operation of the power grid.This article has carried out the following specific work to address the above issues:(1)Taking into account the overall structure and security protection measures of the power grid CPS,the architecture and potential security risks of the new energy station information system were elaborated in detail.On this basis,the process,destructive methods,and consequences of network attacks on the information system of new energy stations were analyzed.Taking distributed denial of service attacks and false data injection attacks as examples,the availability and integrity of measurement and control data in the power grid including wind farm stations were targeted as attacks,and the impact of network attacks on the normal operation of power grid business was analyzed.(2)On the basis of the existing wind farm scheduling system in the power grid,considering the attacks on measurement equipment caused by false data injection,the negative impact of the attacks is summarized and analyzed from three perspectives: transmission line loss,new energy consumption,and wind farm power generation,and corresponding indicators are constructed.Finally,defense measures are taken through three aspects: prediction model,pre allocation capacity,and adjustment optimization plan,Minimize the impact and impact of false data injection attacks on the power system,ensuring the safe and stable operation of the power grid.(3)For the frequency control of regional power grids containing wind farm stations,a frequency simulation method is adopted to comprehensively analyze distributed denial of service attacks.Firstly,based on the existing frequency response models of wind farm stations,a corresponding regional power grid frequency simulation model was constructed.On this basis,the impact of DDo S attacks on the frequency characteristics of wind farm stations was quantitatively analyzed.Finally,a DDo S attack defense strategy was constructed based on model predictive control to ensure the frequency stability of the power system and the stable transmission of communication services.This article analyzes the potential impact of network attacks on new energy stations and proposes corresponding defense strategies,which has reference significance for achieving security protection and stable operation of new power systems,and provides technical reference for the security defense application of new energy information systems...