Design And Implementation Of Monitor And Management System For Vanadium Rlow Flow Battery Based On The .NET

Vanadium Redox Flow Battery(VRB)is a new type of liquid redox reaction battery.There are broad application prospects in fields such as wind power generation,photovoltaic power generation,hospital emergency power supply,smart grid,and military power storage because its high energy storage capacity,large charging and discharging current,independent design of power and capacity,long cycle life,and high safety performance.As a new type of battery equipment for energy reserves,it is of great significance for its information and intelligent management.The application of the battery monitoring and management system not only improves the battery efficiency,but also avoids unnecessary waste of resources and security risks.Firstly,this paper analyzes the structural features and working methods of vanadium redox flow battery.A method for estimating the SOC(State Of Charge)of vanadium redox flow battery based on the UKF(Unscented Kalman Filter)is used,because of the branch currents generated by the circulating pumps have an impact on the state of charge of vanadium redox battery for its charging and discharging.A simulation model of vanadium redox flow battery is established under consideration of cell stack polarization,branch current shunt,and temperature effect on internal resistance of battery by establishing an improved PNGV equivalent circuit model,and UKF algorithm and EKF(Extended Kalman Filter)algorithm were used to estimate SOC of the battery.The simulation results show that the UKF algorithm is closer to the experimental measurement than the EKF algorithm and the estimation error does not exceed ±0.02 by comparing with the experimental measurements,which lays the foundation for data collection of the SOC of the vanadium flow battery monitoring and management system.Secondly,according to the actual needs of enterprises,determine the system design plan,use the combination of C/S structure and B/S structure as the system architecture of this paper,use.NET as the development platform,C# as the development language,and SQL Server as the system database and the analysis of the system from the three aspects of technical feasibility,economic feasibility and safety feasibility to determine the development of this system is safe and feasible.Explicit system design goals,formulate detailed plans,and divide each functional module of the system,including login module,user management module,device communication module,equipment report barrier module,vanadium flow battery management module,video monitoring module,temperature monitoring module,help module,and explain the structural characteristics and basic functions of each module,and conduct detailed design of the system according to the module flow chart,use case diagram and E-R diagram.Finally,the overall test of each functional module is performed.The test results show that the system interface is clean and beautiful,and the operation is convenient and the operation status is good,and it meets the requirements of the enterprise.