Detection and localization of non-technical losses in distribution systems with future smart meters

In terms of efficiency, 54 out of 159 Swedish DSOs have higher distribution losses than 4% on an annual basis. If these 54 had made improvements in their power grids and reached an energy loss of 4%, this would mean a reduction of 143 GWh/year overall. Assuming a cost of 5 cent/ kWh this would equivalent to approximately 7.2 million EUR/year. This paper evaluates two different distribution systems, a method for detection of non-technical losses(NTL) and the impact of the detection method on time delays and resolution issues. Furthermore, three different methods for localization is evaluated and their usability discussed, evaluated and tools presented. All three methods prove able to localize NTL at the bus of connection in the cases presented in the paper.