Micro-grid Operation Optimization And Simulation Analysis On AC/DC Hybrid Power Grid

Micro-grid is for the advantages of distributed generation, a new distributed energydevelopment to reduce the negative impact of distributed generation on power gridstructure, AC/DC micro-grid is also show the advantages of micro-grid AC and DCmicro-grid common, and the optimal micro-grid network form. AC/DC micro-grid isimproving energy efficiency, promoting the distributed power network, reducing theinfluence of power system on the environment. Promoting social environmentalprotection, energy saving direction to the green development has played an irreplaceablerole. Apparently, successful operation of micro-grid will be the future effective supportand supplement for the power grid, and it is the tend of development for future grid.This paper has studied the AC/DC hybrid micro-grid operation optimization andsimulation for the power system analysis. First of all, designing the structure ofmicro-grid. Including the small wind power, photovoltaic cells distributed powersupply,storage device and local loads in the micro-grid. In the understanding of thetechnology of wind power generation, photovoltaic technology, energy storagetechnology, micro-grid and others related on the basis of theoretical knowledge ofAC/DC micro-grid characteristics analysis. At the same time, the grid connectedoperation improve the reliability of power supply.Secondly, establish the mathematical model of micro-grid. A clear theory of optimaloperation of power system on the basis, points out the necessity of AC/DC hybridmicro-grid operation optimization, and the establishment of the micro-grid to obtain theoptimal profit model. The model from are mainly about wind power angle, usingphotovoltaic battery plate independent inverter to facilitate the expansion and resectionof the characteristics, makes full use of wind energy resources, reduces the influence ofwind power caused by the uncertainty of power system operation. Considering themicro-grid variety of conditions, including photovoltaic battery performance, storage capacity constraints, the wind turbine operation characteristics, load variation andmicro-grid power balance condition.Finally, the AC/DC hybrid under given conditions of micro-grid operationoptimization of numerical simulation.According to the micro-grid operation optimizationof the established mathematical model, the improved particle swarm optimizationalgorithm is into chaos optimization method of specific examples of simulation. VerifyAC/DC micro-grid in the access grid can be more safe and reliable operation, and canobtain higher returns. In order to clear the battery in the hybrid AC/DC micro-gridoperation process, simulation of the battery charge, discharging time price case ofmicro-grid operation.Through the above research, AC/DC hybrid micro-grid can alleviate the impact ofdistributed generation on power network, provide users with safe, reliable, economicpower, and maximize the value of renewable energy.