Advanced Wind Turbine Program Next Generation Turbine ... - NREL

3.2.1 Power Performance Testing of the POC Turbine
Power performance testing was conducted on the POC turbine between February 9, 2001 and
March 21, 2001. A total of 265 hours of data with wind out of the acceptable wind directions
(295° to 335°) and with the turbine available was collected during that time. Figure 33 compares
the measured and theoretical power curves.
Power (kW)
1800
1600
1400
1200
1000
800
600
400
200
0
Theoret ical E GEWE nron 2/ Measured 6-21/ 01
P NREL reliminar Measured y NREL
0 5 10
Wind Speed
15 20
Figure 33. Comparison of Theoretical and Measured POC Power Curves
3.2.2 Power Quality Testing of the POC Turbine
Power Quality testing of the POC turbine was conducted between May 31, 2001 and June 25,
2001. A total of 973 hours of data were collected while the turbine was available, but only 315
hours of data was recorded during 10-minute intervals during which the turbulence intensity was
between 8% and 16%, as required by the IEC 61400-21 Power Quality Standard. The testing
consisted of a long-term phase and a short-term phase, conducted between 31 May and 9 June.
The tests conducted as part of the power quality testing were:
• Maximum measured power (60-second and 0- and 2-second), reactive power demand
• Turbine start and stop tests
• Voltage fluctuations (flicker)
• Current imbalance measurements
• Voltage and current harmonics.
The results of the testing indicated no power quality problems for the POC turbine.
3.2.3 Mechanical Loads Testing of the POC Turbine
Mechanical loads testing was conducted on a production GE1.5/70 turbine installed in a wind
farm at Desert Sky, Texas. Loads were determined to be acceptable.
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