Robust Environment Economic Scheduling Of The Multi-microgrids In The Active Distribution Network

At present,as the fossil energy depletion and environmental deterioration,low-carbon economy and clean energy has gradually become the theme of today's electric power market.Micro power grid combining all kinds of renewable energy power generation in the effective sorting,can be used as an intelligent module and received in the active power distribution network,strengthen interaction and controllability of the active power distribution network,initiative,flexibility and security,and thus enhance the overall efficiency of power system,will become the future power grid containing multiple micro power grid of the active distribution network.So Multi-Microgrids scheduling research in the active distribution network is becoming more and more attention and importance.Based on study of robust environment ecnomic scheduling of the Multi-Microgrids in active distribution network,the specific content as follows:First introduce the definition and characteristic of the active distribution network,the micro grid and Multi-Microgrids;Micro power grid is studied in the common operation characteristics and working principle of the distributed energy,established the scenery and other renewable power,such as micro gas turbine,fuel cell power generation unit and the mathematical model of battery energy storage device;Respectively summarized the cause of renewable energy and electricity power supply test side load forecasting accuracy is not the reason,to lay the foundation for the later research work.Then build the active power distribution network in many micro grids energy flow diagram,multiple piconets power exchange between the model is given,and the active power distribution network is established considering power interaction more multi-objective optimization model of economic dispatch network environment,the Objective function including multiple piconets total operating costs?from various micro mesh generation unit operation maintenance cost,controllable distributed power generating cost,and power grid power exchange cost,cost of power exchange between piconets?minimum and pollutant gas,SO₂ and NO_X?CO₂?emissions at least punishment cost into the discharge of pollutants?gas?,the model adopts the multi-objective Bacterial Colony Chemotaxis?Multi Objective Bacterial Colony Chemotaxis,MOBCC?algorithm to obtain the Pareto solution set,the simulation verified the micro power interaction between networks can reduce the active power distribution network in micro grid more economic cost and environmental cost,and increase the ability of wind power,photovoltaic given,validity of the model is proved reasonable.Finaly on the basis of the above model,give full consideration to the power supply of renewable energy and the user side load uncertainty,the active power distribution network is established in Multi-Microgrids robust environmental economic dispatch model,the objective function increase the forecasting accuracy is not renewable energy penalty cost,using the Latin hypercube sampling method to approximate the objective function can be converted to effective after the objective function,and the algorithm for comparison and analysis with micro grid power when the interaction is considering the prediction accuracy of these two kinds of situations,and the influence of different prediction error range on the solution set,and finally compares the robust model optimal solution and the optimal solution of the conventional scheduling model robustness.