Research On Coordination Control Strategy Of Multi-micro-grids On User-side

Since the industrial revolution,with the large-scale development and utilization of hundreds of years,the global fossil energy(coal,oil,natural gas,etc.)are facing resource depletion,serious pollution and many other practical problems.In order to meet the needs of future energy development,water,wind,solar and other abundant,and low-carbon environmental protection,renewable energy is accelerating the development and utilization of solar photovoltaic applications and applications has proven to be justified,And is strongly recommended for electrification of the grid and will play an increasingly important role.According to the non-cooperation characteristic of the micro-grid operation mode and the different use forms of the electric energy,the operation mode of the micro-grid is divided into sub-micro-networks Network operation and single-network and multi-micro-networks coordination to run two ways.Based on the system model in the demonstration project,the optimal operation model of multi-micro-nets operation is established with the goal of minimizing the running cost of the micro-network.And the particle swarm optimization algorithm is used to solve the model.The main contents of this paper are as follows:(1)The working principle of each micro-power model in micro-grid is introduced.The model of solar power output is established and its operating characteristics,battery charge and discharge model and energy balance model are analyzed.A lot of references are given.The operating cost of the power supply.(2)Two kinds of operation strategies are put forward to reduce the integrated operation cost of multi-micro-grids system,to realize the economic operation of multi-micro-grids system,and to combine the different grid,The economic operation model with the lowest overall operating cost is proposed.(3)For the above optimization model,the particle swarm algorithm is used to solve the problem,and the processing method of the objective function and constraint condition in the PSO algorithm is analyzed concretely.(4)Through the simulation example,the running cost of the micro-grid and the micro-grid are analyzed and compared.At the same time,it shows the effectiveness of the method.By comparing and analyzing the two operating modes,the results show that the model can provide a reference for the operation of multi-micro – networks system.The research work in this paper has theoretical significance and reference value for planning and design and energy management of multi-micro-grids on the user side.