| Building a green,low-carbon,clean energy system dominated by renewable energy is critical.For micro-grid operation,Low absorption rate,and the large difference in timing between the load curve and the output curve of renewable energy,and the large difference in peak and trough values of daily load,etc.In this paper,we study the scenic consumption and economic optimization of micro-grids from the perspectives of energy matching output,power generation and demand side of each micro-grid.In response to the problem of the economic operation of micro-grid with multiple micro-source units,the operating cost model for each generator unit of electricity production unit and the environmental penalty cost model due to greenhouse gas and pollutant emissions are constructed,so that the model of energy supply equipment is generalizable,with the goal of minimizing the operating cost of micro-grid and environmental penalty cost during the operating cycle,and a multi-constrained,non-linear,multi-objective optimized operating model that takes into account multiple micro-source units' combined contributions is established.Using a typical day of a specific micro-grid as an example,the optimal fit force of different gensets under this model is calculated by combining the differential ordering method and the adaptive variation particle population optimization algorithm,which effectively reduces the operating cost of the micro-net and the environmental penalty cost after optimization.From the perspective of power generation side,the optimal operation model of wind photovoltaic gas-turbine storage micro-grid is constructed,the operation strategy of energy storage system is introduced,and the optimization targets are the highest scenery consumption rate and the lowest operating cost of the system within one operating cycle of micro-grid.Using the non-dominant sorting genetic algorithm with elite strategy to obtain the pareto frontier with multiple targets,the algorithm example shows that the deployment of energy storage devices on the power generation side can effectively improve the scenic energy consumption capacity of the micro-grid compared to the wind/light/burn triple supply micro-grid system.From the demand-side perspective,build a tariff incentive demand response model,use economic leverage,change the inherent electricity consumption habits of users,and make the micro-grid daily load demand curve more closely to the scenic unit generation curve.A comparative analysis of five micro-grid operation scenarios is conducted from the perspective of power generation side and demand side association,using specific micro-grids as examples.The results show that considering both the generation side and the demand side can reduce the grid interaction costs while reducing the peak-to-trough difference in daily load and further improve the scenery consumption rate,and both have a catalytic effect. |
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