Interactive Operation Strategy for Multi-scenario County-Level Multi-microgrid Based on ADMM
张冲标 1钱辰雯 1俞红燕 1彭燕玲 2陈金威1
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作者信息
1. 国网浙江省电力有限公司嘉善县供电公司,浙江嘉善 314000
2. 嘉善恒兴电力建设有限公司,浙江嘉善 314100
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摘要
在"双碳"目标的引领下,可再生能源的消纳需求迎来快速增长.为了实现县域内不同负荷特性的微电网可再生能源优势互补,提高消纳率,提出了基于交替方向乘子法(alternating direction method of multipliers,ADMM)的多场景县域多微电网交互运行策略.首先,建立微电网独立运行的调度模型,在日前预调度计划中实现最优调度策略;其次,建立多微电网电能交互运行模型,利用ADMM迭代求解各微网间全局交互电量;最后,利用Shapley值法分配微网群系统的收益,降低每个子微网的系统运行成本.算例分析表明,所提方法不仅能提高可再生能源的消纳率,提升经济性,还能降低碳排放量,实现低碳运行.
Abstract
Under the guidance of the"double carbon"goal,renewable energy has witnessed rapid growth in accommodation demand.In order to realize the complementary advantages of microgrid and renewable energy in the county and improve the accommodation rate of renewable energy,a ADMM-based interactive operation strategy for multi-scenario county-level multi-microgrid is proposed.Firstly,a scheduling model for independent microgrid operation is established to realize the optimal scheduling strategy in the day-ahead pre-scheduling plan.Secondly,a multi-microgrid energy interactive operation model is established,which is iteratively solved with the ADMM algorithm to obtain the global interactive energy between microgrids.Finally,the Shapley value method is used to allocate the benefits of the microgrid group and reduce the system operation cost of each sub-microgrid.The case study shows that the proposed method can not only improve the accommodation rate of renewable energy and realize the economy,but also reduce carbon emissions and realize low-carbon operation.
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