【论文】 光伏方阵 内汇流箱最佳位置的选取分析

keenchan

光伏方阵 内汇流箱最佳位置的选取分析


摘要：在光伏电站中一般都要进行汇流箱安装位置的选择，选址的准确与否关系着能否使得方阵内部各个光伏组串直流电缆与汇流箱的距离总和最小，对于光伏系统设计人员而言，做好汇流箱选址优化非常重要，以电缆使用量最少为优化目标，不仅可以节省光伏电缆用量和成本，而且也能减少电缆压降损耗，提高系统效率。该文结合光伏电站的实际情况与特点，根据曼哈顿距离算法对汇流箱的选址优化问题建立数学模型，得出了目标函数关系式，给出了汇流箱最经济点的位置（即线缆用量最省）和验证过程，最后通过实际案例进行分析。


Abstract： In PV power systems the choice of an appropriate location for the installation of the PV array box (or DC
combiner box) is an important undertaking. It is essential that the box be placed so that the amount of DC
cabling is minimized in order to not only save cable costs but also reduce voltage losses. This paper presents a
fast solution to this problem, based on a mathematical model for the minisum location of the combiner according
to the Manhattan metric between the PV array and the DC combiner box. The target function and its optimal
solution (i.e. the most economical amount of cabling) for this particular model were obtained, and the optimality
of the solution proved by contradiction. The application of this model is illustrated by means of two typical
examples, involving an odd and an even number of strings in a PV array.