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AssigneeMitsubishi Electric Research Laboratories, Inc.
InventorsDaniel Nikolaev Nikovski, Zhenhua Wang
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A method detects power theft in a branch of a distribution system by distinguishing between technical losses that are inevitable during the course of normal operation of the system, and non-technical losses that can be attributed to power theft. The method assumes a specific circuit corresponding to that branch, collects data for energy consumed and currents at regular intervals by means of a smart or traditional power meter, estimates the likely resistances of the lines connecting the consumption points to the distribution transformed by means of least squares regression, and uses the estimated resistances to predict technical losses in future time intervals. By comparing the total power losses measured during future intervals with the estimates of the technical losses, the amount of non-technical losses can be estimated, and theft can be signaled when this amount is unusually high.
A method for detecting non-technical losses in a branch of a power distribution system, wherein a set of lines with unknown resistances connect consumers to a distribution transformer (DT), and a subset of the lines include meters, comprising the steps:
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