Some Aspects of Sampling Load Curve Data On Distribution Systems

Engineering studies of distribution systems often require data on the behavior of electric load as a function of time, often represented by a daily load profile. This paper examines the characteristics of techniques for the representation of load profiles. The type of sampling and the rate (hourly, every fifteen minutes) determine the quality of the information obtained. The need for these qualities as a function of number of custoiers and other aspects of analysis is studied. Several pitfalls in load curve analysis are presented. Guidelines for valid interpretation and use of load curve data are developed and presented.