Hierarchical Optimal Dispatch of Microgrid Based on the Sparrow Search Algorithm
To comprehensively consider the interests of the supply side and demand side of the microgrid,a hierarchical optimization model of the microgrid is established.The upper layer optimizes the load curve with the net load cost and electricity consumption satisfaction as the goal,and the lower layer optimizes the output of each unit with the operating cost and environmental cost as the goal.And the sparrow search algorithm(SSA)is selected to solve the complex optimization problem.Aiming at the problem that SSA is prone to fall into local optimum,an improved sparrow search algorithm(ISSA)is proposed which improves the finder search mode and adds the mutation and greedy strategies.And adding the non-dominant sorting and roulette method into ISSA to improve it to the multi-objective algorithm.The example results show that a 10%transferable load ratio can reconcile the microgrid's interests of both supply and demand sides.Comparing the iterative results of ISSA with SSA,particle swarm optimization,chicken swarm optimization,and grey wolf optimizer proves that ISSA has a good optimization effect and stability.
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维普
