The Hardware In The Loop And System Development Of Microgrid Energy Management

With the worsening environmental problems in the world and the increasing pressure on clean energy demand.As a new and effective way of energy utilization,microgrid has developed so rapidly,and its application range is also expanding so rapidly,that the multi micronetwork system is also progressively on the stage of the times.Due to the uncertainty of the renewable energy in the microgrid,the energy management of the traditional grid can not be fully applied to the micro grid,so it is of great theoretical significance to study the energy management of microgrid.In the multi microgrid interconnection system,distributed generators are more abundant,larger and more uncertain,so the study of the energy management of the multi microgrid has important engineering value.In this paper,the following work is done for the microgrid and energy management:First,a power management strategy based on power balance and economic optimization is proposed for multiple microgrid connected systems.Considering the cost of system generation,pollution control,spinning reserve,and the accuracy of forecasting process,such as wind power,load and so on,a multi microgrid energy management model is established,and solved by particle swarm optimization algorithm.Through the example,we analyze the results of energy management of multi microgrid,verify the correctness and effectiveness of the proposed strategy,and analyze the impact of different prediction accuracy and different confidence levels on the comprehensive operation cost of the system.Then,the visual microgrid energy management simulation interface is built,and the energy management strategy on.the basis of fully considering the dynamic models of all the micro power sources and data acquisition program aimed at the optimal comprehensive cost are written in LabVIEW,a typical microgrid system simulation model is built in Simulink and subdivision of the subsystem in RT-LAB,using PXI to collect and write data,the oscilloscope is used to display the waveform.The hardware in the loop simulation is built,and the energy management hardware in the loop simulation of the microgrid is also carried out,The correctness of the simulation model and the effectiveness and practicability of the simulation platform are verified.Finally,several common LabVIEW and Simulink mixed programming methods and their advantages and disadvantages are introduced.Based on Lab VIEW and Simulink mixed programming,a microgrid energy management system is developed.A simulation model of microgrid is built in Simulink,the visual simulation operation interface and energy management strategy based on real time power balance of microgrid are compiled in LabVIEW.The advantages and disadvantages of Simulink and LabVIEW are fully complementary by SIT,to make up for the MATLAB/Simulink weakness in microgrid system simulation,such as visualization effect is not good,parameter modification process cumbersome,and give full play to the advantages and strengths of the two.The effectiveness of LabVIEW and Simulink hybrid programming and the practicability of the energy management system are verified by an example.