Abstract :
Ramea is a small island in southern Newfoundland. Since 2004, it has a wind-diesel hybrid power system to provide
power for approximately 600 inhabitants. In this paper, wind speed data, load data, and sizing of pumped hydro
system at Ramea, Newfoundland are presented. The dynamic model of wind turbine, pumped hydro system, and
diesel generator are included in this paper. The dynamic model is simulated in SIMULINK/MATLAB to determine the
system voltage and frequency variation and also to visualize different power outputs. Sizing of pumped hydro
system indicates that a 150-kW pumped hydro storage system can be installed in Ramea to increase the renewable
energy fraction to 37% which will reduce non-renewable fuel consumption on this island. Also, it is found that a
pumped hydro energy storage system for Ramea is a much better choice than a hydrogen energy storage system.
Such a system will have a higher overall efficiency and could be maintained using local technical expertise,
therefore, a more appropriate technology for Ramea.
