Research on Micro-grid Optimal Economy with Micro-Turbine
In order to research the economy of the micro- grid with micro- turbine,the economic optimization model based on maximizing comprehensive benefits was set up on the premise of satisfying the constraintson system operation and demands of loads. At island model and grid-connected model,optimization models were developed in the micro-grid taking into account equipment depreciation cost,operation and maintenance costs,cost of fuel,power purchase cost and reduced environmental cost. The swarm optimization algorithm was used to solve this model,comparing and analyzing the comprehensive cost in the running mode with and without micro-turbine and the output of distributed generation. The results show that the model can ensure the reliability of electricity and the power configuration scheme with micro-turbine can ensure best economy. That provides a theoretical basis for the planning of micro-grid.