10kV distribution line reactive optimal configuration based on load duration modeling

ZHANG Xue-jun1, LU Xian-chuan1, ZHANG Jian-min2, SUN Yan-chao2, WU Lei2

(1.State Grid Xinchang County Electric Power Company, Xinchang 310006, China;

2.College of Automation, Hangzhou Dianzi University, Hangzhou 310018, China)

Abstract: In oder to consider the load variation for future planning years, in the the model and algorithm for 10kV distribution line reactive optimal configuration based on load duration model were presented. By the cluster analysis of historic daily load duration curves, a calculation method for the representative day for all seasons together with a calculation method for the representative hour for the representative days, were presented to calculate the equivalent operation time. The reasearch results indicate that this method can make the load model much more practical and refined, and make the distribution line reactive configuration optimization to avoid the doubts by using simple data model, or the heavy calculation by adopting a very complicated load model. Real application has approved the feasibility and correctness of such modeling.

Key words: distribution network; reactive optimal configuration; duration load model; cluster analysis; calculation of equivalent operation time of representative day; calculation of equivalent operation time of representative hour