지상기반 라이다의 측정 오차에 영향을 미치는 요인 분석 = Analysis of Factors Influencing the Measurement Error of Ground-based LiDAR

다국어 초록 (Multilingual Abstract)

A study on factors influencing measurement error of Ground-based LiDAR(Light Detection And Ranging) system was conducted in Kimnyeong wind turbine test site on Jeju Island. Three properties of wind including inclined angle, turbulence intensity and power law exponent were taken into account as factors influencing the measurement error of Ground-based LiDAR. In order to calculate LiDAR measurements error, 2.5-month wind speed data collected from LiDAR (WindCube v2) were compared with concurrent data from the anemometer on a nearby 120m-high meteorological mast. In addition, data filtering was performed and its filtering criteria was based on the findings at previous researches. As a result, at 100m above ground level, absolute LiDAR error rate with absolute inclined angle showed 4.58~13.40% and 0.77 of the coefficients of determination, R². That with turbulence intensity showed 3.58~23.94% and 0.93 of R² while that with power law exponent showed 4.71~9.53% and 0.41 of R². Therefore, it was confirmed that the LiDAR measurement error was highly affected by inclined angle and turbulence intensity, while that did not much depend on power law exponent.

참고문헌 (Reference)

1 김현구, "풍력자원평가용 윈드큐브 라이다와 렘텍 소다의 비교·검증 - 포항가속기 원격탐사 캠페인" 한국태양에너지학회 31 (31): 63-71, 2011

2 김현구, "가상적 참값으로써 소다 측정자료를 적용한 라이다에 의한 풍속연직분포 측정의 불확도 분석" 한국태양에너지학회 30 (30): 79-85, 2010

3 "Windographer 3.3.11 User Manual"

4 Leosphere, "WindCube v2 LiDAR Remote Sensor User Manual version 06"

5 International Electrotechnical Commission, "Wind Turbines - power performance measurements of electricity producing wind turbines" IEC 31-, 2016

6 International Electrotechnical Commission, "Wind Turbines - Power performance measurements of electricity producing wind turbines" IEC 15-, 2005

7 International Electrotechnical Commission, "Wind Turbines - Design requirements" IEC 21-23, 2005

8 Brower M. C, "Wind Resource Assessment" John Wiley & Sons, Inc 105-114, 2012

9 World Wind Energy Association, "Wind Energy International 2014/2015" WWEC 9-24, 2013

10 Manwell J. F., "Wind Energy Explained: Theory, Design and Application" Wiley 39-48, 2009

11 Jain Pramod, "Wind Energy Engineering" Mc GrawHill Companies, Inc 101-104, 2011

12 Thies Clima, "The product information"

13 B. Cañadillas, "Testing the Performance of a Ground-based Wind LiDAR System" (38) : 58-64, 2011

14 Kindler, D., "Testing and calibration of various lidar remote sensing devices for a 2 year offshore wind measurement campaign" 141-143, 2009

15 González-Jorge, H, "Quantifying the influence of rain in LiDAR performance" 95 : 143-148, 2017

16 Renewable Energy Research Laboratory, "MTC Final Progress Report-LIDAR" University of Massachusetts 2007

17 "Hyosung Power & Industrial systems, Products & Solutions - Green Energy"

18 Deutsche WindGuard Consulting GmbH, "Evaluation of ZephIR" Deutsche WindGuard Consulting GmbH 2006

19 Measnet, "Evaluation of Site-specific Wind Conditions, Version 1"

20 Kim, H, "Correction of LiDAR Measurement Error in Complex Terrain by CFD: Case Study of the Yangyang Pumped Storage Plant" 41 (41): 226-234, 2017

21 Hyundai Heavy Industries, "Business - Green Energy"

22 Kang, D., "Analysis and Verification of Wind Data from Ground-based LiDAR" 7 (7): 2017

23 Boquet, M., "Analysis and Optimisation of Pulsed Doppler Lidar Wind Profile Measurement Process in Complex Terrain" 69-72, 2008

24 Kim, D., "A Comparison of Ground-based LiDAR and Met Mast Wind Measurements for Wind Resource Assessment Over Various Terrain Conditions" 158 : 109-121, 2016

25 Joint Research Centre, "2014 JRC wind status report" JRC 16-17, 2015