A High Turbulence Measurement at Cigu Test Site

Pei-Tat IongMetal Industries Research & Development Centre2014. 08. 28

1

Summary

Cigu Test Site Introduction Measurement in 2013

Summer Measurement in 2014

SummerSummer Future Plan

2

Cigu Test Site Introduction Cigu Small Wind Turbine Test Site is

founded by BSMI and MIRDCfounded by BSMI and MIRDC Located at Tainan, West-South of

Taiwan Total area 10400 sq. m with 16 wind

turbine foundations. No other buildings within 200 m range

3

4

5

Measurement in 2013 Summer In 2013 summer, a horizontal axis wind turbine

with hub height 13.4 m was installed on T1with hub height 13.4 m was installed on T1 Met Mast location M1 was located 25.6 m(3.3D)

from T1. During 2013 Jul 26~Sep 5, no wind turbines was

installed on T2 and T3 Green Sector (125.29~165.10) : Monitor room is

the one and only obstacle to Met Mast, 9011 mins data sample collected Orange Sector (175.59~216.42) : Monitor room is

the one and only obstacle to Wind Turbine, 7293 mins data sample collected Blue Sector (272.51~58.56) : Standard

measurement sector, 26277 mins data sample collected

6

Turbulence Intensity versus Windspeed Bin of 2013 Summer Measurement

7

Definition of Wind Direction Standard Deviation

Wind Direction Standard Deviation versus Windspeed Bin of 2013 Summer Measurement

9

Wind Direction Standard Deviation versus TI Bin of 2013 Summer Measurement

10

Measurement in 2014 Summer Lower hub height for stronger Lower hub height for stronger

building wake effect Ultrasonic anemometer

replacing cup anemometer Manufacturer provides a

300W horizontal axis wind turbine for this study. Installed turbine for this study. Installed on T2 Ultrasonic anemometer

placed between T2 and Monitor room

11

12

Test DevicesReplace cup anemometer and wind vane Replace cup anemometer and wind vane with ultrasonic anemometer Ultrasonic anemometer

Model : Windmaster 1590-PK-020 Output frequency : 10 Hz

Output format : Horizontal Wind speed Output format : Horizontal Wind speed & direction, Vertical Wind speed Range : 0 ~ 45 m/s Accuracy : 1.5%RMS @ 12 m/s

13

Status of 2014 Summer Measurement Data collection from 2014 July 2 Data collection from 2014 July 2

~ 2014 August 19 Data between 2014 July 2 ~

2014 July 23 has been analyzed 7404 mins analyzed in standard

measurement sector6715 mins analyzed in building 6715 mins analyzed in building wake sector Medium Typhoon Matmo

encountered between 2014 July 21 ~ July 23

Measurement Sector in 2014 Summer

Standard Measurement Sector 2.78~104.44 193.17~200.61 299.46~311.64 299.46~311.64 Building Wake Sector

104.44~193.17

Vertical Windspeed versus Horizontal Windspeed Bin of 2014 Summer Measurement Measurement Sector

16

Vertical Windspeed versus Horizontal Windspeed Bin of 2014 Summer Measurement -- Building Wake Sector

17

Turbulence Intensity versus Horizontal Windspeed Bin of 2014 Summer Measurement Measurement Sector

18

Turbulence Intensity versus Horizontal Windspeed Bin of 2014 Summer Measurement Building Wake Sector

19

Power Output versus Horizontal Windspeed Bin of 2014 Summer Measurement

20

Power Output versus Horizontal Windspeed Bin of 2014 Summer Measurement Measurement under different TI

groups

21

Measurement following last IEA Task 27 GuidelineIEA Task 27 Guideline:1. Install two ultrasonic anemometer, One at corner , One at center, perform Site calibration based on IEC 61400-12-1 Anenter, perform Site calibration based on IEC 61400-12-1 Annex C for one year

2. After site calibration, replace center anemometer with a small wind turbine, perform power performance test

3. Vertical wind speed component will be measured3. Vertical wind speed component will be measured4. Wind speed and wind direction sampled in 10 Hz and averaged in 1 min duration

Measurement following last IEA Task 27 Guideline

Installation Status

2014 Sep 27th ~ Oct 3rd Horizontal wind speed comparison between two anemometer

Horizontal wind speed of #2 (roof top corner) / wind speed o

f #1(roof top center)f #1(roof top center)

2014 Sep 27th ~ Oct 3rd Turbulence Intensity of #1(roof top center)

2014 Sep 27th ~ Oct 3rd Turbulence Intensity of #2(roof top corner)

2014 Sep 27th ~ Oct 3rd Updraft Angle of #1(roof top center)

2014 Sep 27th ~ Oct 3rd Updraft Angle of #2(roof top corner)

2014 Nov 28th ~ Dec 4th Horizontal wind speed comparison between two anemometer

Horizontal wind speed of #2 (roof top corner) / wind speed o

f #1(roof top center)f #1(roof top center)

2014 Nov 28th ~ Dec 4th Turbulence Intensity of #1(roof top center)

2014 Nov 28th ~ Dec 4th Turbulence Intensity of #2(roof top corner)

2014 Nov 28th ~ Dec 4th Updraft Angle of #1(roof top center)

2014 Nov 28th ~ Dec 4th Updraft Angle of #2(roof top corner)

Future Plan Power performance test of Power performance test of

300W HAWT for comparison baseline Site calibration on top of

monitor room rooftop with 2 ultrasonic anemometer in 2014 Winter We hope to install the 300W

HAWT on monitor room rooftop in 2015 after site calibration and baseline power performance test

Thank you for your attention