With the increasing integration of renewable energy sources into the main grid,the establishment of active distribution network systems is imperative to monitor and respond to the scheduling demands of the main grid.This paper presents a cost-effective scheduling strategy to transform microgrids into active distribution networks using interconnection power scheduling.The strategy aims to minimize the operational system costs of wind-solar-storage DC microgrids during grid-connected operation.An improved sparrow search algorithm is employed to solve the operational cost optimization.By comparing with the scheduling result of the non-interconnection power scheduling strategy,the proposed scheduling strategy reduces the grid-connected operational costs by 9.79%,while simultaneously fulfilling the peak-shaving and valley-filling directives from the main grid.These results verify the feasibility of the proposed scheduling strategy for economically dispatching grid-connected DC microgrids.
关键词
直流微电网/联络线计划功率/调度策略/削峰填谷/麻雀搜索算法
Key words
DC microgrid/planned power of the interconnection line/scheduling strategy/peak shaving and valley filling/sparrow search algorithm
维普
万方数据