XVII IMEKO World Congress Metrology in the 3rd Millennium

Abstract − The present paper deals with the selected problems of electrical energy quality assessment in the power system under non-sinusoidal conditions, i.e. the real power system. The principals are understood by the author as the three-segment block which consists of the basic definitions concerning power quality and its assessment, methods to determine electrical power quality indices by using the appropriate mathematical tools, as well as the related instrumentation for solving a problem of electrical power quality assessment. In the paper, these three fundamental parts for solving the electrical power quality assessment problem have been described and commented on. All analyses have been illustrated by the real data from ship electrical power systems