IEC TS 62600-201:2015

IEC TS 62600-201 ®
Edition 1.0 2015-04
TECHNICAL
SPECIFICATION
colour
inside
Marine energy – Wave, tidal and other water current converters –
Part 201: Tidal energy resource assessment and characterization

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IEC TS 62600-201 ®
Edition 1.0 2015-04
TECHNICAL
SPECIFICATION
colour
inside
Marine energy – Wave, tidal and other water current converters –

Part 201: Tidal energy resource assessment and characterization

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.140 ISBN 978-2-8322-2591-2

– 2 – IEC TS 62600-201:2015 © IEC 2015
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Symbols, units and abbreviations . 7
4.1 Symbols and units . 7
4.2 Abbreviations . 8
5 Methodology overview . 8
5.1 Project definition . 8
5.1.1 General . 8
5.1.2 Stage 1: Feasibility study . 9
5.1.3 Stage 2: Layout design study . 9
5.2 Methodology . 9
6 Data collection . 12
6.1 Introduction . 12
6.2 Bathymetry . 12
6.3 Tidal characteristics . 13
6.3.1 General . 13
6.3.2 Assessment of data quality . 13
6.3.3 Tidal height . 14
6.3.4 Tidal current mobile survey . 14
6.3.5 Tidal current stationary survey . 16
6.4 Meteorological data . 19
6.4.1 General . 19
6.4.2 Wind data . 19
6.4.3 Atmospheric pressure . 20
6.5 Wave climate . 20
6.6 Turbulence . 20
6.6.1 General . 20
6.6.2 Flow structure / Eddies . 20
6.7 Stratification, seawater density and sediment measurement . 21
7 Model development and outputs . 21
7.1 General . 21
7.2 Model coverage, resolution and boundary conditions . 21
7.2.1 Bathymetric data . 21
7.2.2 Model coverage . 22
7.2.3 Model boundary conditions . 22
7.2.4 Model resolution . 23
7.3 Choice of model (including characteristics) . 23
7.3.1 General considerations . 23
7.3.2 Model selection . 24
7.3.3 Model characteristics . 25
7.4 Analysing data to provide model inputs, calibration and validation . 25
7.4.1 Bathymetry interpolation . 25

7.4.2 Currents . 25
7.4.3 Meteorological analysis . 25
7.4.4 Waves . 26
7.4.5 Turbulence . 26
7.4.6 Flow Structures / Eddies . 27
7.4.7 Seawater density, salinity and temperature . 28
7.4.8 Sediment . 28
7.5 Model calibration / Validation . 28
7.5.1 Model calibration . 28
7.5.2 Model validation . 29
7.6 Incorporating energy extraction . 30
7.6.1 General . 30
7.6.2 Methodology for incorporating energy extraction . 31
7.6.3 Practical incorporation of energy extraction in modelling. 32
8 Data analysis and results presentation . 33
8.1 General model result presentation . 33
8.2 Generation of annual velocity distribution . 33
8.2.1 General . 33
8.2.2 Potential methodologies for simulating “missing” tidal constituents . 34
8.2.3 Long-term model current predictions (harmonic analysis) . 34
8.2.4 Results presentation . 36
8.3 Velocity distribution curves – Joint probability distribution . 37
9 Reporting of results . 39
9.1 Purpose of reporting . 39
9.2 Contents of the report . 39
Annex A (informative) Calculation of TEC Annual Energy Production . 40
A.1 General . 40
A.2 Individual TEC Annual Energy Production (AEP) . 40
A.3 Array Annual Energy Production . 41
Annex B (informative) Guidelines for current profiler measurements . 42
B.1 General . 42
B.2 Instrument configuration . 42
B.3 Correcting for clock drift . 42
B.4 Depth quality control . 43
B.5 Velocity quality control . 43
Bibliography . 44

Figure 1 – The effect of predicting tides with various constituents from Cook Inlet,
Alaska . 36
Figure 2 – Joint velocity and direction probability distribution, a location in Cook Inlet,
Alaska . 38
Figure 3 – Example exceedance curve for velocity magnitude . 39

Table 1 – Resource assessment stages . 9
Table 2 – Model and field survey recommendations (Overview) . 11

– 4 – IEC TS 62600-201:2015 © IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MARINE ENERGY –
WAVE, TIDAL AND OTHER WATER CURRENT CONVERTERS –

Part 201: Tidal energy resource assessment and characterization

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all question
...