Open Phase Fault Localization in a Medium Voltage Distribution Grid Using Smart Meters

This paper focuses on an open phase type of fault in a medium voltage (MV) distribution grid. This phenomenon is described from the perspective of two mainly used configurations of connection of MV transformer windings. The analysis of how to detect the fault is drawn up from measurements in an MV as well as low voltage (LV) grid. Theoretical analysis is followed by a digital simulation for its verification and real measurements were also done in the grid. The use of smart meters is considered to be a reliable economical-technical approach in an open phase fault localization process.