ENERGY
IEA Task 32 Power Performance
Uncertainty Round Robin
Update for PCWG Glasgow
12 December 2016
Luke Simmons
07 September 2016
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IEA
Task 32 Power
07 September
2016Performance Uncertainty Round Robin
SAFER, SMARTER, GREENER
Overview
 Round robin was developed Q1 and Q2 of 2016
 Only considers Cat A for power and Cat B wind speed and direction
related uncertainty components. Cat B uncertainty for power, density, TI
normalization, etc. were not considered.
 Round 1 was July through September
– Agreed to apply 95% lidar availability filter
– Questions about uv,rews,veer,i
 Round 2 launched October 27
 >40 round robin interested participants, 12 submitted final results
– 2 incomplete
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Lidar and power performance in 2016
 Power Curve Working Group – various meetings
 MEASNET workshop – Sept 26, Hamburg
 UniTTe workshop – Nov 18, Copenhagen
 IEA Task 32 workshop – Dec 14, Glasgow
 Various conference presentations, posters, etc.
– Franke and Albers, Power Curve Uncertainty of REWS, WindEurope
Summit 2016. Sept 27/29 Hamburg
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Round 2 – Three baseline scenarios
 WS1 HH mast and RSD REWS
 WS2 HH mast only
 WS3 RSD for REWS with short
mast
Measured
parameter
Source of
uncertainty
WS 1 – mast and
RSD for REWS
WS 2 – mast only
WS 3 – RSD for
REWS with short
mast
Calibration [E.9.2]
Participant
Participant
Participant
In-situ calibration
[E.9.3]
0 m/s
0 m/s
0 m/s
Operational
characteristics
[E.9.4]
Class A = 1.32
Class A = 1.32
Class A = 1.32
Mounting effects
[E.9.5]
0.5%
0.5%
0.5%
Data acquisition
[E.9.6]
0.1%
0.1%
0.1%
Wind speed - measurement
Wind Speed
– cup
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Results – Alignment on database
Total Data by Wind Speed Definition
4000
3500
Data Points
3000
2500
2000
WS1
1500
WS2
1000
WS3
500
0
1
2
3
4
5
6
7
Participant ID
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9
10
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Results - Alignment on AEP
AEP at 8 m/s
WS1 ~ 1.3% higher AEP than WS2
16800
Measured AEP (MWh)
16700
16600
16500
16400
16300
WS1
16200
WS2
16100
WS3
16000
0
1
2
3
4
5
6
7
Participant ID
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9
10
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12
Results - WS1 Uncertainty in AEP
12.0
WS1: HH Mast and RSD REWS
10.0
U (% of AEP)
8.0
6.0
4.0
2.0
0.0
3
4
5
6
7
8
9
Rayleigh Distribution (m/s)
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11
12
Results - WS2 Uncertainty in AEP
12.0
WS2: HH Mast
10.0
U (% of AEP)
8.0
6.0
4.0
2.0
0.0
3
4
5
6
7
8
9
Rayleigh Distribution (m/s)
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Results – WS3 Uncertainty in AEP
25.0
WS3: RSD REWS
U (% of AEP)
20.0
15.0
10.0
5.0
0.0
3
4
5
6
7
8
9
Rayleigh Distribution (m/s)
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Average uncertainty
Average Uncertainty Comparison
14.0
12.0
WS1
U (% of AEP)
10.0
WS2
8.0
WS3
6.0
4.0
2.0
0.0
3
4
5
6
7
8
9
Rayleigh Distribution (m/s)
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Next steps
 Workshop to discuss results, lessons and next steps
 Draft white paper on results with references to PCWG worked examples
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Thank you
[email protected]
www.dnvgl.com
SAFER, SMARTER, GREENER
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