1、 IEC TS 62600-2 Edition 1.0 2016-08 TECHNICAL SPECIFICATION Marine energy Wave, tidal and other water current converters Part 2: Design requirements for marine energy systems IEC TS 62600-2:2016-08(en) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2016 IEC, Geneva, Switzerland All
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11、 Design requirements for marine energy systems INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 27.140 ISBN 978-2-8322-3580-5 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. colour inside 2 IEC T
12、S 62600-2:2016 IEC 2016 CONTENTS FOREWORD . 8 INTRODUCTION . 10 1 Scope 11 1.1 General . 11 1.2 Applications 11 2 Normative references. 12 3 Terms and definitions 13 4 Symbols and abbreviated terms . 13 5 General considerations 15 5.1 General . 15 5.2 Regulations . 15 5.3 Suitability and/or relevanc
13、e of standards 15 5.4 Quality assurance and quality control 15 5.5 Safety levels . 16 5.6 Design principles structure and foundations 17 5.7 Load definition and load combinations . 17 5.8 Other considerations . 18 5.8.1 Stability and watertight integrity 18 5.8.2 Electrical, mechanical, instrumentat
14、ion and control systems 18 5.8.3 Reliability issues 18 5.8.4 Corrosion protection . 18 5.8.5 Design for operation, inspection, maintenance and decommissioning 18 5.9 Operational and structural resonance 18 5.10 Basis of design . 19 6 External conditions 19 6.1 General . 19 6.2 Waves 19 6.2.1 Normal
15、sea state (NSS) 19 6.2.2 Normal wave height (NWH) 19 6.2.3 Extreme sea state (ESS) 20 6.2.4 Extreme wave height (EWH) . 20 6.2.5 Breaking waves 21 6.2.6 Wave run-up 21 6.3 Sea currents . 21 6.3.1 General . 21 6.3.2 Sub-surface currents 21 6.3.3 Wind-generated near-surface currents 22 6.3.4 Tidal cur
16、rents . 22 6.3.5 Breaking wave-induced surf currents 22 6.3.6 Normal current model (NCM) 23 6.3.7 Extreme current model (ECM) 23 6.3.8 Normal turbulence model (NTM) . 23 6.3.9 Extreme turbulence model (ETM) . 23 6.4 Wind conditions . 24 6.5 Water level 24 6.5.1 General . 24 IEC TS 62600-2:2016 IEC 2
17、016 3 6.5.2 Normal water level range (NWLR) 25 6.5.3 Extreme water level range (EWLR) . 25 6.6 Sea and river ice . 25 6.7 Earthquakes 26 6.8 Marine growth . 26 6.9 Seabed movement and scour 26 6.10 Ship collisions . 26 6.11 Other environmental conditions . 26 7 Loads and load effects . 26 7.1 Genera
18、l . 26 7.2 Loads . 26 7.3 Design situations and load cases . 28 7.3.1 General . 28 7.3.2 Interaction with waves, currents, wind, water level and ice 28 7.3.3 Design categories 29 7.3.4 Limit states 29 7.3.5 Partial safety factors 30 7.3.6 Simulation requirements . 31 7.3.7 Design conditions . 32 8 M
19、aterials . 40 8.1 General . 40 8.2 Material selection criteria 41 8.3 Environmental considerations 42 8.4 Structural materials . 42 8.4.1 General . 42 8.4.2 Metals . 42 8.4.3 Concrete 43 8.4.4 Composites 43 8.5 Compatibility of materials 45 9 Design of primary structures for wave and tidal/current e
20、nergy converters 45 9.1 General . 45 9.2 Design of steel structures 45 9.2.1 General . 45 9.2.2 Load and resistance factor design (LRFD) 46 9.2.3 Ultimate limit state . 46 9.2.4 Fatigue limit state 47 9.2.5 Serviceability limit state 47 9.3 Design of concrete structures 47 9.3.1 General . 47 9.3.2 L
21、imit states 47 9.3.3 Bending moment and axial force . 48 9.3.4 Slender structural members 48 9.3.5 Transverse shear . 48 9.3.6 Torsional moments . 48 9.3.7 Bond strength and anchorage failure 48 9.3.8 Fatigue limit state 48 9.3.9 Serviceability limit state 49 9.3.10 Stresses in pre-stressed reinforc
22、ement . 49 9.3.11 Stresses in concrete 49 4 IEC TS 62600-2:2016 IEC 2016 9.3.12 Detailing of reinforcement 49 9.3.13 Corrosion control . 49 9.4 Design of grouted connections 49 9.4.1 General . 49 9.4.2 Design principles . 49 9.5 Design of composite structures 49 9.5.1 General . 49 9.5.2 Design princ
23、iples . 50 9.5.3 Joints and interfaces 52 10 Electrical, mechanical, instrumentation and control systems . 52 10.1 Overview. 52 10.2 General requirements 52 10.3 Abnormal operating conditions safeguard 53 11 Mooring and foundation considerations 54 11.1 Overview. 54 11.1.1 General . 54 11.1.2 Unique
24、 challenges for wave energy converters . 54 11.1.3 Unique challenges for tidal energy converters . 54 11.2 Tethered floating structures . 54 11.3 Fixed structures 55 11.4 Compound MEC structures 55 12 Inspection requirements . 57 12.1 General . 57 12.2 Consideration during the design stage . 57 12.3
25、 Inspection and maintenance planning 58 12.4 Data management . 58 12.5 Condition assessment and integrity evaluation (against performance requirements) 59 12.6 Maintenance execution 59 13 Life cycle considerations 60 13.1 General . 60 13.2 Planning . 62 13.2.1 General . 62 13.2.2 Installation condit
26、ions . 62 13.2.3 Site access 62 13.2.4 Environmental conditions . 62 13.3 Documentation 63 13.4 Receiving, handling and storage 63 13.5 Assembly of and installation of MECs 63 13.5.1 General . 63 13.5.2 Access . 64 13.6 Fasteners and attachments . 64 13.7 Cranes, hoists and lifting equipment 64 13.8
27、 Decommissioning 64 Annex A (normative) Load definition and load combinations 66 A.1 Load combinations 66 A.2 Load calculations 67 A.3 Floating and moored devices . 69 IEC TS 62600-2:2016 IEC 2016 5 A.4 Flow analysis methodology 69 Annex B (normative) Reliability issues 71 B.1 General . 71 B.2 Struc
28、ture and foundation . 71 B.3 Mechanical system 71 B.4 Electrical system . 72 B.5 Control and protection system . 72 B.6 Instrumentation . 72 B.7 Testing during qualification 72 Annex C (normative) Corrosion protection 73 C.1 General . 73 C.2 Steel structures . 73 C.2.1 General . 73 C.2.2 Corrosion r
29、ates 74 C.2.3 Protective coatings . 74 C.3 Cathodic protection . 74 C.3.1 General . 74 C.3.2 Closed compartments. 75 C.3.3 Stainless steel . 75 C.4 Concrete structures . 75 C.4.1 General . 75 C.4.2 Provision of adequate cover . 75 C.4.3 Use of stainless steel or composite reinforcement . 76 C.4.4 Ca
30、thodic protection of reinforcement 76 C.5 Non-ferrous metals 76 C.6 Composite structures 77 C.7 Compatibility of materials 77 C.8 Chains, steel wire and fibre rope . 77 Annex D (normative) Operational and structural resonance . 78 D.1 General . 78 D.2 Control systems 78 D.3 Exciting frequencies 78 D
31、.4 Natural frequencies . 78 D.5 Analysis 79 D.6 Balancing of the rotating components 79 Annex E (informative) Requirements for a basis of design. 80 E.1 General . 80 E.2 Design life . 82 E.3 Design standards 82 E.4 Regional regulations . 82 E.5 Environmental conditions 82 E.5.1 General . 82 E.5.2 Me
32、teorology and climatology 82 E.5.3 Air/water conditions 82 E.5.4 Water level 83 E.5.5 Currents 83 E.5.6 Waves . 83 6 IEC TS 62600-2:2016 IEC 2016 E.5.7 Marine life 83 E.6 Seabed conditions . 83 E.6.1 General . 83 E.6.2 Bathymetry and coastal topography 83 E.7 Material standards and testing . 84 Anne
33、x F (informative) Wave spectrum 85 F.1 Overview. 85 F.2 The Pierson-Moskowitz spectrum 85 F.3 Relationship between peak and zero crossing periods 88 F.4 Wave directional spreading . 88 Annex G (informative) Shallow water hydrodynamics and breaking waves . 89 G.1 Selection of suitable wave theories 8
34、9 G.2 Modelling of irregular wave trains 90 G.3 Breaking waves . 90 Annex H (informative) Guidance on calculation of hydrodynamic loads 93 H.1 General . 93 H.2 Large bodies . 94 H.3 Hybrid structures . 94 H.4 Short term statistics 95 H.5 Breaking wave loads . 95 H.6 Dynamic loads due to turbulent fl
35、ow 96 Bibliography . 97 Figure 1 Definition of water levels (see IEC 61400-3) 24 Figure 2 Examples of compound position mooring systems for wave (a, b) and tidal (c, d) energy conversion systems 56 Figure C.1 Profile of the thickness loss resulting from corrosion of an unprotected steel structure in
36、 seawater (1 mil = 0,025 4 mm) 73 Figure E.1 Quality assurance system 81 Figure F.1 PM spectrum . 86 Figure F.2 JONSWAP and PM spectrums for typical North Sea storm sea state . 87 Figure G.1 Regions of applicability of stream functions, stokes V, and linear wave theory . 89 Figure G.2 Breaking wave
37、height dependent on still water depth . 91 Figure G.3 Transitions between different types of breaking waves as a function of seabed slope, wave height in deep waters and wave period . 92 Figure H.1 Relative importance of mass, viscous drag and diffraction forces on marine structures 93 Table 1 Safet
38、y levels 16 Table 2 Types of loads that shall be considered 27 Table 3 ULS combinations of uncorrelated extreme events . 29 Table 4 Design categories 29 Table 5 ULS partial load safety factors ffor design categories . 31 Table 6 Design load cases for WEC . 33 Table 7 Design load cases for TEC 35 Tab
39、le 8 ISO test standards . 44 IEC TS 62600-2:2016 IEC 2016 7 Table 9 Material factors Mfor buckling 46 Table 10 Summary of model factors . 52 8 IEC TS 62600-2:2016 IEC 2016 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MARINE ENERGY WAVE, TIDAL AND OTHER WATER CURRENT CONVERTERS Part 2: Design requirem
40、ents for marine energy systems 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 questions co
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