基于虚拟用户拓扑等值的配电网理论线损计算

Theoretical line loss calculation of distribution network based on virtual user topological equivalence method

为实现拓扑数据缺失及不准确情况下的低压配电网理论线损计算,提出基于虚拟用户拓扑等值法的台区理论线损计算方法。首先构建台区单一虚拟用户等值网络;然后基于台区终端数据和用户曲线数据进行等值电阻计算,并将每种运行方式类型下的等值电阻计算结果进行K-means聚类分析,形成各类运行方式下的等值电阻典型参数库;在此基础上,根据待计算日的运行方式与典型参数对应运行方式的相似程度选择等值电阻参数,分固定线损和可变线损进行理论线损计算。算例结果表明,该方法能够在台区拓扑数据缺失及不准确的情况下提供较准确的理论线损计算结果,满足实际线损排查和治理的需求。

In order to realize the theoretical line loss calculation of low voltage distribution network under the condition of missing and inaccurate topological data,a theoretical calculation method of line loss based on virtual user topology equivalence method is proposed.Firstly,a single virtual user equivalent network in the station area is constructed.Then,the equivalent resistance calculation is performed based on the terminal area data and the user curve data,and the equivalent resistance calculation results under each operation mode are K means cluster analysis.The typical parameter library of the equivalent resistance under various operating modes;on this basis,according to the similarity degree of the operation mode of the day to be calculated and the corresponding operation mode of the typical parameter,the equivalent resistance parameter is selected,and the fixed line loss and the variable line loss are performed.Theoretical line loss calculation.The results of the example show that the proposed method can provide more accurate theoretical line loss calculation results in the case of missing and inaccurate topological data,which meets the requirements of actual line loss investigation and treatment.