Study on Cyber-Physical System Modeling on Coordinated Control of Photovoltaic Generation and Battery Energy Storage System

Cyber-physical System(CPS) closely integrates physical,communication and cyber systems,and the integration of CPS with power system is regarded as the technical basis of developing smart power network.Starting from ensuring the one to one correspondence between physical model and information model,the approach of establishing single cyber-physical(CP) model and the integration method of multi CP models are discussed.Based on the scenes of photovoltaic(PV) generation and battery energy storage(BES) system,their CP models are established respectively,and on this basis the method to integrate the two CP models into a coordinated CP control model for PV and BES system is put into practice.Using a simulation tool,in which the dynamic link library(DLL) is utilized as the bridge between the simulation of cyber and physical platforms,the established CP model for PV generation and the coordinated CP control model for PV generation and BES system are simulated.Simulation results show that the CP model is effective in optimization control and the method is feasible for CPS modeling.