Development of a traceable reference system for measurement of power and power quality

Quality of measurement results and their accuracy in not neccessary to be high in conventional systems, approximate results are enough to know exactly what happens in the system. However, with increased penetration of renewable sources in the grid, need for high quality and precise measurements has risen. In order to have precise information about power quality, good knowledge of the behaviour of power quality analyzers is needed. Good knowledge can only be obtained by calibration of those meters. This paper describes start of development of a fully traceable power quality reference setup for the calibration of power quality analyzers based on digital sampling of voltage/current signals, and shown preliminary results.