A Versatile Clustering Method for Electricity Consumption Pattern Analysis in Households

作者：Hino Hideitsu^*; Shen Haoyang; Murata Noboru; Wakao Shinji; Hayashi Yasuhiro

来源：IEEE Transactions on Smart Grid, 2013, 4(2): 1048-1057.

DOI：10.1109/TSG.2013.2240319

• Electricity consumption pattern
• gap statistics
• Gaussian mixture model
• hierarchical clustering
• KL-divergence

Analysis and modeling of electric energy demand is indispensable for power planning, operation, facility investment, and urban planning. Because of recent development of renewable energy generation systems oriented for households, there is also a great demand for analysing the electricity usage and optimizing the way to install electricity generation systems for each household. In this study, employing statistical techniques, a method to model daily consumption patterns in households and a method to extract a small number of their typical patterns are presented. The electricity consumption patterns in a household is modeled by a mixture of Gaussian distributions. Then, using the symmetrized generalized Kullback-Leibler divergence as a distance measure of the distributions, typical patterns of the consumption are extracted by means of hierarchical clustering. The statistical modeling of daily consumption patterns allows us to capture essential similarities of the patterns. By experiments using a large-scale dataset including about 500 houses' consumption records in a suburban area in Japan, it is shown that the proposed method is able to extract typical consumption patterns.

• 出版日期2013-6