| Wind power output |
280 kW |
| Diesel output |
5 units, 750 kW in total (Hateruma Island) |
| |
5 units, 1,050 kW in total (Tarama Island) |
| AC-DC converter |
300 kW |
| Battery capacity |
400 kWh (Hateruma Island) |
| |
600 kWh (Tarama Island) |
| Control Functions |
- Diesel generator is controlled to automatically
turn on/off depending upon wind power output.
- Storage battery for leveling wind power output,
compensating power output in response to abrupt changes in wind
power and discharge control for peak demands.
- Frequency variation within ± 0.3 Hz, when operating
the wind turbine.
- Voltage control by AC/DC converter (power factor
control)
|
|
Wind turbine (280 kW) |
Electric
power for remote islands has been supplied by using small-scale diesel
generators, in which power cost is relatively high. The commended system
is installed in a remote island in Okinawa. It is a hybrid system composed
of a 280 kW wind power generator and 5 units of diesel generator.