Loss Estimation of Low Voltage Distribution System in Presence of Energy Theft Based on Information in the GIS

Today, many power distribution companies are confronted with meter tampering and energy theft phenomena that increase the non-technical losses of the low voltage network. The first step in eliminating these types of losses is to identify areas that are infected. The loss estimation method already provided, are not capable of covering the meter tampering and the electricity theft. Hence, in this paper, a method is proposed to estimate the loss of low voltage network using available information. The main idea of the proposed method is based on the definition of load factor index and it has been proven that in the case of meter tampering and electricity theft, this coefficient will decrease compared to the actual load factor of the feeder. The information used in this method is available in the GIS system and there is no need to install another measurement device. The proposed method has been implemented in 12 low voltage networks in Moosian  and its results have been presented.