基于局部量测的配电网损耗计算

Line loss calculation of distribution network based on local measurement

针对配电网量测装置有限、系统运行参数获取不全的问题，提出了一种基于局部量测信息的配电系统损耗计算方法．将配电网按量测点的分布进行分区解耦，在分解后的各区域内，仅根据首末端量测量及区域间的关联性，利用前推回代法估算各区域节点负荷及电压，最终得出区域功率损耗．仿真算例对比了所提方法的估算值与实际损耗值，证明了所提方法的有效性和准确性．该方法充分利用有限的实时量测数据，最大程度提高了网损估算的精确度，可有效应用于量测装置不全的配电网损耗计算．

This paper proposes a line loss calculation method of distribution network based on partial measurement with the problem of incomplete parameters of the distribution network equiping limited measuring meters. The distribution network is divided into several subregions according to the location of measuring points. In consideration of the coupling relationship of different subregions, the nodal loads and voltages of every subregion are extimated with the forward and backward substitution method, as well as the line losses. Comparison of the results obtained by the estimation method with the actual value is conducted, which verified the effectiveness and correctness of the proposed method. The proposed method is proved to be suitable for the line loss calculation of the distribution network with limited measurement data.