An extended interpretation of THD concept in the wake of ship electric power systems research

The paper is to investigate seemingly a simple problem of THD interpretation in the wake of standards’ definitions and measurement methods. The consequences of application of various definitions of the considered factor are profoundly discussed on the basis of the real voltage waveforms registered in two different ship systems. Particularly, the results of determining of THD by means of various definitions are presented. Finally, the proposed amendment of related rules is provided. The aim is to overcome hitherto existing ambiguities.