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나셀변환함수를 이용한 풍력터빈 출력성능평가 및 불확도 분석

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Abstract
A study on power performance testing of a wind turbine which has no met-mast at a distance of 2~4 rotor diameter was carried out using the Nacelle Transfer Function, NTF, according to IEC 61400-12-2. The wind data for this study was measured at HanKyoung wind farm of Jeju Island.
The NTF was modeled using the correlation between wind speeds from the met-mast and from the wind turbine nacelle within 2~4 rotor diameter from the met-mast. The NTF was verified by the comparison of estimated Annual Energy Productions, AEPs, and binned power curves. The Nacelle Power Curve, NPC, was derived from the nacelle wind speed data corrected by NTF. The NPC of wind turbine under test and the power curve offered by the turbine manufacturer were compared to check whether the wind turbine is properly generating electricity. Overall the NPC was in good agreement with the manufacturer's power curve. The result showed power performance testing for a wind turbine which has no met-mast at a distance of 2~4 rotor diameter was successfully carried out in compliance with IEC 61400-12-2.
An uncertainty of the power curve is caused by measurement equipment, environmental condition, and the number of data. In order to obtain the uncertainty of NPC, additional parameters such as NTF, terrain class, seasonal variation, turbulence, and wind shear were considered. The uncertainty of NPC in compliance with IEC 61400-12-2 and the power curve in compliance with IEC 61400-12-1 were compared. The amount of uncertainty of NPC was larger than that of power curve using met-mast wind speed through all wind speed range because of NTF and method uncertainty.
Author(s)
김현우
Issued Date
2013
Awarded Date
2013. 8
Type
Dissertation
URI
http://dcoll.jejunu.ac.kr/jsp/common/DcLoOrgPer.jsp?sItemId=000000006459
Alternative Author(s)
Kim, Hyeon Wu
Affiliation
제주대학교 대학원
Department
대학원 풍력특성화협동과정
Advisor
許鐘哲
Table Of Contents
I. 서 론 1
1. 연구배경 1
2. 연구동향 3
3. 연구목적 5
II. 테스트 개요 6
1. 테스트 사이트 6
2. 테스트 풍력 터빈 사양 7
3. 측정 데이터 8
1) 측정 데이터 요소와 측정 장비 8
2) 측정 기준과 데이터 처리 9
III. 출력성능평가 12
1. 나셀 변환함수(NTF) 12
1) 나셀 변환함수를 위한 측정 방위구간 12
2) 지형에 따른 결과값 보정(site calibration) 13
3) 마스트 풍속과 나셀 풍속 상관관계 15
4) 나셀 변환함수 검증 18
2. 나셀 출력곡선(NPC) 23
1) 지형 등급(Terrain class) 24
2) 나셀 출력곡선 측정 방위구간 26
3) 나셀 출력곡선 29
4) AEP 예측량을 이용한 나셀 출력곡선 검증 34
IV. 불확도 40
1. 불확도 이론적 배경 40
1) 불확도(Uncertainty) 40
2) 불확도의 A형 평가(Type A uncertainty) 40
3) 불확도의 B형 평가(Type B uncertainty) 40
4) 합성표준불확도(Combined standard uncertainty) 42
5) 확장불확도(Expanded uncertainty) 42
2. 나셀 출력곡선 불확도 구성요소 43
1) 나셀 변환함수(NTF) 43
2) 나셀 출력곡선(NPC) 46
3. IEC 61400-12-1에 의한 불확도와 비교 52
V. 결 론 56
참고문헌 57
Degree
Master
Publisher
제주대학교 대학원
Citation
김현우. (2013). 나셀변환함수를 이용한 풍력터빈 출력성능평가 및 불확도 분석
Appears in Collections:
General Graduate School > Multidisciplinary Graduate School Program for Wind Energy
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