考虑负荷特性互补及供电单元划分的中压配电网实用化自动布线

Practical Automatic Planning for MV Distribution Network Considering Complementation of Load Characteristic and Power Supply Unit Partitioning

针对当前配电网规划中因未能考虑负荷特性互补而导致网络规模偏大与设备利用效率偏低等问题,提出一种新的考虑负荷特性互补及供电单元划分的中压配电网实用化自动布线方法。首先,基于现有负荷聚类分块与网格化规划成果,完善了中压配电网馈线区块和供电单元的概念,并提出考虑供电单元划分的中压配电网网架规划框架;其次,凝练了考虑负荷特性互补的馈线区块和供电单元划分效果评估指标,并提出用于变电站中馈线区块划分的旋转中心线距离加权交替定位算法;再次,考虑线路的规划年综合费用和基于可靠性指标的停电损失费用,建立基于供电单元划分的中压配电网网架规划模型,并结合蚁群算法提出主干线与分支线组合求解的自动布线方法。最后,通过实例验证了模型和方法的科学性与实用性。

A new practical automatic planning method for MV distribution network considering complementation of load characteristic and division of power supply is presented to solve the problems of large network size and low equipment utilization ratio caused by the lack of consideration of complementation of load characteristic in distribution network planning.First,based on the existing research results on load clustering and grid planning,the concepts of MV distribution network feeder block and power supply unit were redefined and the technical framework of MV distribution network planning considering division of power supply was designed.Then,the evaluation indexes of feeder block partitioning and power supply unit partitioning considering complementation of load characteristic were set up,and rotation center line distance weighting alternate location algorithm was proposed to divide the feeder block.Further,the MV distribution network planning model based on power supply unit partitioning was proposed,which took the minimum value of the sum of interruption cost based on reliability index and line integrated cost of the planning year.Combining ant colony algorithm,automatic planning algorithm was proposed to get the combinatorial solution of trunk line and branch line.Finally,the scientificalness and practicability of the model and method in this paper is verified through the case study.