The inherently fluctuating nature of waves may
be reflected to some extent in the power output of wave energy
converters (WECs). These fluctuations can induce voltage
fluctuations which can potentially generate flicker. Hence, wave
farm managers will be required to demonstrate that their farm is
compliant with grid codes and similar regulations, in order to be
granted grid connection. This is usually performed through grid
impact assessment studies by means of numerical power system
simulators. However, in many studies, the electrical power
output of a wave farm is calculated as the sum of identical power
profiles corresponding to a single WEC, each shifted by a
random time delay. Hence, this approach does not take into
account the wave dispersion phenomenon. A comparative study
was performed, and is presented in this paper, for assessing the
validity of neglecting the influence of this phenomenon on flicker.
This study is expected to contribute in defining the required level
of hydrodynamic detail necessary for simulating the output
power of a wave farm when it is to be used for flicker analyses.