IEC TS 62600-200:2013

IEC/TS 62600-200 ®
Edition 1.0 2013-05
TECHNICAL
SPECIFICATION
colour
inside
Marine energy – Wave, tidal and other water current converters –
Part 200: Electricity producing tidal energy converters – Power performance
assessment
IEC/TS 62600-200:2013(E)
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IEC/TS 62600-200 ®
Edition 1.0 2013-05
TECHNICAL
SPECIFICATION
colour
inside
Marine energy – Wave, tidal and other water current converters –

Part 200: Electricity producing tidal energy converters – Power performance

assessment
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XA
ICS 27.140 ISBN 978-2-83220-805-2

– 2 – TS 62600-200 © IEC:2013
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Symbols, units and abbreviations . 12
4.1 Symbols and units . 12
4.2 Abbreviations . 13
5 Site and test conditions . 14
5.1 General . 14
5.2 Bathymetry . 14
5.3 Flow conditions . 14
5.4 TEC test site constraints . 15
5.5 External constraints . 16
6 Tidal energy converter (TEC) description . 16
6.1 General . 16
6.2 Operational parameters . 16
7 Test equipment . 16
7.1 Electric power measurement . 16
7.2 Tidal current measurement . 17
7.3 Data acquisition. 18
8 Measurement procedures . 18
8.1 General . 18
8.2 Operational status . 18
8.3 Data collection . 19
8.4 Instrument calibration . 19
8.5 Data processing . 19
8.6 Averaging . 20
8.7 Test data properties . 20
8.8 Electric power measurement . 20
8.8.1 Output terminals of the TEC . 20
8.8.2 The power measurement location . 21
8.8.3 Remote TEC sub-systems . 21
8.8.4 Power measurements . 21
8.9 Incident resource measurement . 21
8.9.1 Current profiler placement relative to TEC . 21
8.9.2 Contribution from turbulence. 25
8.9.3 Contribution from waves . 25
9 Derived results . 26
9.1 General . 26
9.1.1 Introductory remarks . 26
9.1.2 Water density . 26
9.2 Data processing . 26
9.2.1 Filtering . 26
9.2.2 Exclusion . 26
9.2.3 Correction . 26
9.3 Calculation of the power curve . 26

TS 62600-200 © IEC:2013 – 3 –
9.3.1 Method of bins . 26
9.3.2 Detailed description of method of bins . 27
9.3.3 Interpolation . 30
9.3.4 Extrapolation . 30
9.3.5 Uncertainty calculation . 30
9.4 Mean tidal current velocity vertical shear profile . 30
9.5 RMS fluctuating tidal current velocity . 31
9.6 Tidal ellipse at hub height . 32
9.7 Calculation of the TEC overall efficiency . 33
9.8 TEC annual energy production (TEC AEP) . 33
10 Reporting format . 34
10.1 General . 34
10.2 TEC report . 34
10.3 TEC test site report . 34
10.4 Electrical grid and load report . 37
10.5 Test equipment report . 37
10.6 Measurement procedure report . 38
10.7 Presentation of measured data . 38
10.8 Presentation of the power curve . 40
10.9 Presentation of the TEC overall efficiency . 43
10.10 Uncertainty assumptions . 44
10.11 Deviations from the procedure . 44
Annex A (normative) Categories of error . 45
Annex B (informative) Uncertainty case study . 47
Annex C (informative) Calculation of TEC annual energy production . 48
Annex D (informative) Wave measurement . 51

Figure 1 – Equivalent diameter calculations for various TEC projected capture areas . 9
Figure 2 – Orientation A for current profiler deployment (plan view) . 23
Figure 3 – Orientation A for current profiler deployment (section view) . 23
Figure 4 – Orientation B for current profiler deployment (plan view) . 24
Figure 5 – Orientation B for current profiler deployment (section view) . 24
Figure 6 – Orientation for floating TEC current profiler deployment (plan view) . 25
Figure 7 – The vertical variation of tidal current across the projected capture area . 28
Figure 8 – Example tidal ellipse plot identifying principal ebb and flood directions . 36
Figure 9 – Example plot of the channel cross-sectional area consumed by the TEC on
plane perpendicular to principal flow direction (plan and section view) . 37
Figure 10 – Example scatter plot of performance data . 38
Figure 11 – Example plot of the mean tidal current velocity vertical shear (mean
velocity shear) profile . 39
Figure 12 – Example presentation of the power curve . 41
Figure 13 – Example presentation of the power curve with uncertainty bars . 42
Figure 14 – Example presentation of the power curve showing excluded data points . 42
Figure 15 – Example presentation of the TEC overall efficiency curve . 44

Table 1 – Example presentation of the mean tidal current velocity vertical shear (mean
velocity shear) data . 39

– 4 – TS 62600-200 © IEC:2013
Table 2 – Example presentation of the RMS fluctuating tidal current velocity at hub
height . 40
Table 3 – Example presentation of the power curve data . 41
Table 4 – Example presentation of the TEC overall efficiency . 43
Table A.1 – List of uncertainty parameters to be included in the uncertainty analysis . 45
Table C.1 – Example presentation of annual energy production (flood tide shown) . 50

TS 62600-200 © IEC:2013 –
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