Objective
A 108 KW wind turbine for operation in parallel with the existing diesel grid of Mykonos Island. A substantial quantity of oil will be substituted by wind energy feeding a small grid powered by diesel generators. The annual electricity output is estimated at 350 000 KWh.
The wind turbine has been in normal operation since 8 December 1986, without any major problems. On April 25, 1987, an official opening of the project took place.
The generated energy is fed to the approx. 12 MW local grid aiming to cover 3% of the annual electricity needs. Up to 31.03.90 the operation results of the machine were:
Total production 930 860 KWh
Overall availability 60.9 %
Capacity factor 30.3 %
Mean annual windspeed (over 6 years period) 10.9 m/s
Contribution to islands yearly production 2.3 %
The remote control, via telephone line, was expected to improve the machines' availability. A data acquisition system, designed by PPC, was used for the demonstration period.
Total production (08.12.86 - 31.03.90): 930 860 KWh. In the first year of operation the machine performed excellently. (capaciy factor 0.45). During the following two years the reliability decreased, as the manufacturer stopped supporting the project and PPC had not trained employees. Beginning of 1990 the machine started to have problems with its brake pads. The wind turbine was totally destroyed on 28 November 1991 due to rotor runaway. According to PPC the major design fault was the braking system, and this was the origin of the accident. O & M costs higher than expected. No direct replication of the project, but PPC has installed several wind farms in different islands. The project convinced PPC that Wind Turbines can operate in cost effective manner.
A 108 KW MICON (DK) 19 m diameter wind turbine has been chosen to be installed at the site of Fanari on Mykonos Island. The 3 bladed upwind machine will have an asynchronous generator placed on the top of a 23 m steel tower and will be connected to the 12 MW diesel based grid of the island. The reinforced fiberglass blades have fixed pitch with built in parachute airbrakes (released at speeds of more than 51 rpm) and the power is controlled by stall control. The cut-in speed is 4 m/s, the cut-out 28 m/s and it reaches the nominal power at 15 m/s. At the site of the installation the mean annual windspeed is 10,5 m/s and thus the estimated annual yield is 350 MWh. The estimated payback time of the project is 10 years.
Topic(s)
Data not availableCall for proposal
Data not availableFunding Scheme
DEM - Demonstration contractsCoordinator
10436 Athens
Greece