基于深度优先遍历的配电网可开放容量分析和业扩报装决策

Available Capacity Analysis and Business Expansion Decision for Distribution Network Based on Depth-first Traversal

针对当前配电网可开放容量计算粗略、业扩报装依赖人工经验、未能有效发挥数据赋能决策的问题,将可开放容量与业扩报装分析相结合,提出基于深度优先遍历的配电网可开放容量计算和业扩报装优化决策方法。首先,考虑季节和日负荷特性,基于深度优先遍历算法计算包含季节和日内时序特性的配电网馈线分区和台区公变可开放容量。其次,考虑可开放容量与负荷曲线相匹配、负载均衡、台区三相平衡等多目标,建立业扩报装优化决策模型,得到馈线分区至台区两个层次的精细化负荷最优接入方案。最后,采用IEEE标准配电系统和某实际配电网络的算例,分析验证了所提可开放容量计算方法的高效性,所提业扩报装决策方法能够有效应用可开放容量分析结果,得到兼顾多目标的精细化负荷接入方案。

Aiming at the current problems of the rough calculation of distribution network available capacity,reliance on personal experience,and failure to give full play to the decision-making of data empowerment,this study combines available capacity with the analysis of business expansion and proposes an available capacity analysis and optimization decision method of business expansion for distribution networks based on depth-first traversal.First,considering the seasonal and daily load characteristics in the substation area,the available capacities of the feeder and public transformer were calculated based on the depth-first traversal algorithm.Second,considering the multi-objective matching of the available capacity with the load curve,load balancing,and three-phase balance in the substation area,an optimization decision model of business expansion was established,and a refined optimal load access scheme from feeder zoning to the substation area was obtained.Finally,the simulation examples using IEEE standard distribution systems and an actual distribution network were used to verify the efficiency of the proposed available capacity calculation method.It was observed that the proposed method can effectively apply the available capacity analysis results to obtain a refined load access scheme considering multiple objectives.