GB/T 31517.1-2022 English PDFGB/T 31517.1: Historical versions
Basic dataStandard ID: GB/T 31517.1-2022 (GB/T31517.1-2022)Description (Translated English): Fixed offshore wind turbines - Design requirements Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: F11 Classification of International Standard: 27.180 Word Count Estimation: 118,165 Date of Issue: 2022-10-12 Date of Implementation: 2022-10-12 Older Standard (superseded by this standard): GB/T 31517-2015 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 31517.1-2022: Fixed offshore wind turbines - Design requirements---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.Fixed offshore wind turbines - Design requirements ICS 27.180 CCSF11 National Standards of People's Republic of China Replacing GB/T 31517-2015 Design requirements for fixed offshore wind turbines Released on 2022-10-12 2022-10-12 implementation State Administration for Market Regulation Released by the National Standardization Management Committee table of contentsPreface VII Introduction VIII 1 Scope 1 2 Normative references 1 3 Terms and Definitions 2 4 Symbols and abbreviations 9 4.1 Symbols and units 9 4.2 Abbreviations 10 5 Basic Requirements10 5.1 Overview 10 5.2 Design method 11 5.3 Security Level 12 5.4 Quality Assurance 12 5.5 Wind rotor-nacelle assembly nameplate 12 6 Definition and evaluation of external conditions 12 6.1 Overview 12 6.2 Wind turbine class 13 6.3 Definition of external conditions of offshore wind turbine site 13 6.3.1 Overview 13 6.3.2 Wind conditions 13 6.3.3 Sea conditions 14 6.3.4 Grid conditions 18 6.3.5 Other environmental conditions 18 6.4 Assessment of External Conditions of Offshore Wind Turbine Sites 19 6.4.1 Overview 19 6.4.2 Marine Meteorological Database 19 6.4.3 Wind assessment 20 6.4.4 Ocean condition assessment 21 6.4.5 Assessment of other environmental conditions 24 6.4.6 Grid condition assessment 25 6.4.7 Evaluation of geological conditions 25 7 Structural Design 26 7.1 Overview 26 7.2 Design method 26 7.3 Loads 26 7.3.1 Overview 26 7.3.2 Gravity and inertial loads 26 7.3.3 Aerodynamic loads 26 7.3.4 Driving load 27 7.3.5 Hydrodynamic loads 27 7.3.6 Sea ice/lake ice loading 27 7.3.7 Other loads 27 7.4 Design state and load cases 27 7.4.1 Overview 27 7.4.2 Power generation (DLC1.1~DLC1.6) 33 7.4.3 Both power generation failure or loss of grid connection (DLC2.1~DLC2.5) 33 7.4.4 Startup (DLC3.1~DLC3.3) 35 7.4.5 Normal shutdown (DLC4.1~DLC4.2) 35 7.4.6 Emergency stop (DLC5.1) 36 7.4.7 Stop (stop or idle) (DLC6.1~DLC6.4) 36 7.4.8 Shutdown with faults (DLC7.1~DLC7.2) 37 7.4.9 Transportation, installation, maintenance and repair (DLC8.1~DLC8.4) 37 7.4.10 Sea ice/lake ice design load case 40 7.5 Calculation of loads and load effects 41 7.5.1 Overview 41 7.5.2 Correlation of hydrodynamic loads 41 7.5.3 Calculation of hydrodynamic loads 41 7.5.4 Sea ice/lake ice load calculation 41 7.5.5 Global damping evaluation for response evaluation of supporting structures 41 7.5.6 Simulation requirements 42 7.5.7 Other requirements 43 7.6 Limit state analysis 44 7.6.1 Method 44 7.6.2 Ultimate strength analysis 45 7.6.3 Fatigue failure 46 7.6.4 Special partial safety factors 46 7.6.5 Periodic load assessment for foundation assessment 46 8 Control system 47 9 Mechanical systems 47 10 Electrical system 47 11 Foundation and Substructure Design 47 12 Assembly, installation and hoisting 48 12.1 Overview 48 12.2 Program 49 12.3 Installation conditions 49 12.4 Site roads 49 12.5 Environmental conditions 49 12.6 Documentation 49 12.7 Receiving, handling and storage 50 12.8 Supporting structural systems 50 12.9 Offshore wind turbine assembly 50 12.10 Offshore wind turbine hoisting 50 12.11 Fasteners and accessories 50 12.12 Cranes, hoists and lifting equipment 50 13 Commissioning, operation and maintenance 50 13.1 Overview 50 13.2 Design requirements for safe operation, inspection and maintenance 51 13.3 Commissioning Manual 51 13.3.1 Overview 51 13.3.2 Turning on the power supply 52 13.3.3 Debugging test 52 13.3.4 Record 52 13.3.5 Work after commissioning 52 13.4 Operator's Manual 52 13.4.1 Overview 52 13.4.2 Description of operation and maintenance records 52 13.4.3 Guidelines for Automatic Fail Shutdown 53 13.4.4 Guidelines for reduced reliability 53 13.4.5 Work procedures 53 13.4.6 Contingency plans 53 13.5 Maintenance Manual 54 Appendix A (Informative) Key Design Parameters of Offshore Wind Turbines 55 A.1 Identification of offshore wind turbines 55 A.1.1 Overview 55 A.1.2 Wind rotor - nacelle assembly (mechanical equipment) parameters 55 A.1.3 Support structure parameters 55 A.1.4 Wind conditions (based on a 10-minute base period and including wind farm wake effects, if relevant) 55 A.1.5 Sea state (based on 3h base period, if relevant) 56 A.1.6 Wind turbine grid conditions 56 A.2 Other environmental conditions 57 A.3 Restrictions on transport, lifting and maintenance 57 Appendix B (Informative) Shallow Water Hydrodynamics and Breaking Waves 58 B.1 Choosing the Appropriate Wave Theory 58 B.2 Simulation of irregular wave trains 59 B.3 Wave height distribution 59 B.3.1 Overview 59 B.3.2 Goda model for maximum wave height 59 B.3.3 Battjes-Groenendijk wave height distribution curve 61 B.3.4 Forristal waves and peak height distribution 64 B.4 Breaking waves 65 B.5 References 66 Appendix C (Informative) Guidelines for Calculation of Hydrodynamic Loads 67 C.1 Overview 67 C.2 Morison's equation 68 C.3 Diffraction 68 C.4 Slap and impact loads 69 C.5 Vortex induced vibration 71 C.5.1 Overview 71 C.5.2 Critical velocity of transverse vortex induced vibration 72 C.5.3 Critical speed of longitudinal vortex induced vibration 73 C.6 Attachments 73 C.6.1 Overview 73 C.6.2 Methods for estimating hydrodynamic coefficients considering attachments and marine organisms 73 C.7 Calculation method 79 C.7.1 Overview 79 C.7.2 Explicit methods 79 C.7.3 Constrained wave method 79 C.8 References 80 Appendix D (Informative) Suggestions on the Design of Offshore Wind Turbine Support Structure under Ice Loading 81 D.1 Introduction 81 D.2 Overview 81 D.3 Choice of ice thickness 81 D.4 Load cases 82 D.4.1 Overview 82 D.4.2 Horizontal loads due to temperature fluctuations in stationary ice sheets (DLCD1) 82 D.4.3 Horizontal loads due to water level fluctuations and arching effects in a stationary ice sheet (DLCD2) 83 D.4.4 Horizontal loads generated by drift ice (DLCD3, DLCD4, DLCD7 and DLCD8) 83 D.4.5 Vertical loads due to fixed ice sheets (DLCD5) 86 D.4.6 Ice ridge pressure (DLCD6) 87 D.4.7 Dynamic loads (DLCD3, DLCD4, DLCD7 and DLCD8) 87 D.5 Requirements for stochastic simulation 89 D.6 Requirements for simulation tests 89 D.7 References 90 D.8 Ice Condition References 91 Appendix E (informative) Foundation and substructure design of offshore wind turbines 93 Appendix F (Informative) Statistical Extrapolation of Meteorological Ocean Operational Parameters for Ultimate Strength Analysis 94 F.1 Overview 94 F.2 Determination of significant wave heights with a 50-year return period at mean wind speed using IFORM 94 F.3 Joint distribution of V and Hs and approximation of environmental contours 95 F.4 Selection of Sea State Duration 96 F.5 Determination of individual maximum wave heights in the SSS 97 F.6 References 97 Appendix G (Informative) Corrosion Protection 98 G.1 Overview 98 G.2 Marine environment 98 G.3 Corrosion protection considerations 98 G.4 Corrosion protection systems - supporting structures 99 G.5 Corrosion protection of rotor-nacelle components 99 G.6 References 99 Appendix H (Informative) Prediction of Maximum Wave Height Caused by Tropical Cyclone 101 H.1 Overview 101 H.2 Calculation of wind farms under the influence of tropical cyclones 101 H.3 Wave estimation under the influence of tropical cyclones 101 H.4 References 101 H.5 Tropical Storm Database 102 Appendix I (Informative) Suggestions on Adjustment of Tropical Cyclone Regional Safety Level 103 I.1 Overview 103 I.2 Global Ruggedness Rating Standard 103 I.3 Design load cases 103 References 105forewordThis document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules for Standardization Documents" drafting. This document is part 1 of GB/T 31517.GB/T 31517 has issued the following parts. ---GB/T 31517.1 Design requirements for fixed offshore wind turbines. This document replaces GB/T 31517-2015 "Design Requirements for Offshore Wind Turbines". Compared with GB/T 31517-2015, except Apart from structural adjustments and editorial changes, the main technical changes are as follows. a) The "external conditions" was changed, and the "external conditions assessment of offshore wind turbine site" was merged into "external conditions" to form "external conditions". Component Definition and Evaluation", as wind turbine support structures for offshore projects are often site-specific (see Chapter 6, Chapter 6 and Chapter 12 of the.2015 edition); b) The table of design loads has been changed to simplify the representation of waves, which is also applicable to extreme sea conditions, and the guidelines for load calculation are also The corresponding revisions have been made (see 7.4, 7.4 of the.2015 edition); c) The basis for writing the load safety factor has been changed, and the load safety factor is directly in accordance with IEC 61400-1.2019 (see 7.5.1,.2015 edition 7.5, 7.6); d) Some rules of the control system have been changed, and the control system is consistent with IEC 61400-1.2019 (see Chapter 8,.2015 edition Chapter 8). This document is equivalent to IEC 61400-3-1.2019 "Wind energy generation system - Part 3-1.Design of fixed offshore wind turbines Require". The following minimal editorial changes have been made to this document. --- In order to coordinate with the existing standards, change the name of the standard to "Design Requirements for Stationary Offshore Wind Turbines"; --- Since IEC 61400-3-1 is in the preparation stage, the IEC 61400-1 cited in the normative documents in Chapter 2 is at the peak in.2018 Final International Standard Draft (FDIS) stage. When IEC 61400-3-1 was released in April.2019, IEC 61400-1 was Published in February.2019, therefore 61400-1.2018 in this document is corrected to IEC 61400-1.2019. Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by China Machinery Industry Federation. This document is under the jurisdiction of the National Wind Power Standardization Technical Committee (SAC/TC50). This document is drafted by. China Shipbuilding Industry Corporation Haizhuang Wind Power Co., Ltd., Shanghai Electric Wind Power Group Co., Ltd., China Power Construction Group East China Survey and Design Research Institute Co., Ltd., China Electric Power Research Institute Co., Ltd., Xinjiang Goldwind Technology Co., Ltd. Division, China Shipbuilding Industry Corporation (Tianjin) Offshore Wind Power Engineering Technology Co., Ltd., Guohua Energy Investment Co., Ltd., Beijing Jianheng Certification Center Co., Ltd., CRRC Zhuzhou Electric Locomotive Research Institute Co., Ltd., Shanghai Survey and Design Research Institute Co., Ltd., China Quality Certification Center, China Classification Society Quality Certification Company, Dongfang Electric Wind Power Co., Ltd., China Power Construction Group Zhongnan Survey and Design Research Institute Co., Ltd., Guodian United Power Technology Co., Ltd., China Power Construction Group Northwest Survey and Design Research Institute Co., Ltd., China Energy Construction Group Guangdong Electric Power Equipment Co., Ltd. Design and Research Institute Co., Ltd., Mingyang Smart Energy Group Co., Ltd., Harbin Electric Wind Energy Co., Ltd., Shandong Electric Power Engineering Consulting Institute Co., Ltd., Longyuan (Beijing) Wind Power Engineering Design Consulting Co., Ltd., China Huaneng Group Clean Energy Technology Research Institute Co., Ltd., Shandong CRRC Wind Power Co., Ltd. Ltd. The main drafters of this document. Wen Maoshi, Han Huali, Xu Yiqing, Deng Yu, Li Huaxiang, Wang Bin, Fu Deyi, Li Rongfu, Liu Yang, Gao Hui, Cai Jifeng, Li Xiuzhen, Lin Yifeng, Li Chang, Liu Zhina, Zeng Qingzhong, Zhou Kai, Chu Jingchun, Tian Weihui, Yang Mindong, Wang Chao, Xu Ke, Wang Yu, Li Xingyun, Liu Xin, Tian Jiabin. The release status of previous versions of this document and the documents it replaces are as follows. ---It was first published as GB/T 31517-2015 in.2015, and this is the first revision.IntroductionThis document describes the minimum design requirements for offshore wind turbines, but it is not a complete design specification or installation instruction manual. In the design, manufacture, assembly, assembly, commissioning, operation and maintenance of offshore wind turbines, different contracting parties may be responsible for different Same job, but make sure to meet the requirements of this document. The division of responsibilities between these contracting parties is outside the scope of this document. This document is the first part of GB/T 31517, and GB/T 31517 is intended to be composed of two parts. ---GB/T 31517.1 Design requirements for fixed offshore wind turbines. Specifies the exterior of offshore wind turbine sites Additional requirements for condition assessment, and basic design requirements to ensure the engineering integrity of stationary offshore wind turbines. its purpose The purpose is to provide an appropriate level of protection against various hazards to the wind turbine during the expected life of the wind turbine. cause damage. ---GB/T 31517.2 Design requirements for floating offshore wind turbines. Floating Offshore Wind Turbine (FOWT) Additional requirements for the assessment of external conditions of the site, and basic design requirements to ensure the integrity of the FOWT project. That The purpose is to provide an appropriate level of protection against various risks to wind turbines during the expected life of the wind turbine group damage. Design requirements for fixed offshore wind turbines1 ScopeThis document specifies additional requirements for the assessment of the external conditions of offshore wind turbine sites and to ensure that fixed offshore wind turbines Fundamental design requirements for group engineering integrity. Its purpose is to provide an appropriate level of protection during the expected life of the wind turbine against Prevent various hazards from causing damage to the wind turbine. This document focuses on the engineering integrity of each structural component of an offshore wind turbine, but also addresses subsystems such as control and protection mechanisms, internal electrical systems, and mechanical systems. An offshore wind turbine is a fixed offshore wind turbine if its supporting structure bears hydrodynamic loads and is fixed to the seabed. on wind turbines. The design requirements in this document do not ensure the engineering integrity of floating offshore wind turbines. floating sea Refer to IEC 61400-3-2 for wind turbine design requirements. Offshore wind turbines mentioned in this document refer to fixed offshore wind power unit. This document should be used together with the applicable IEC and ISO standards mentioned in Chapter 2.In particular, note that this document complies fully with the Requirements of IEC 61400-1.The safety level of offshore wind turbines designed by this document should not be lower than IEC 61400-1.in some Chapter, in order to clearly describe the requirements of the provisions, copy the content of IEC 61400-1.2 Normative referencesThe contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document. ISO 2533.1975 Standard atmosphere (Standardatmosphere) Note. GB/T 23511-2021 General requirements for marine structures in the oil and gas industry (ISO.19900.2019, IDT) ISO.19901-1.2015 Specific requirements for offshore structures for the oil and gas industry Part 1.Marine meteorological design and operating conditions ISO.19901-4 Specific requirements for offshore structures for the oil and gas industry - Part 4.Elements of geotechnical and foundation design requirements) Note. GB/T 18451.1-2012 Design requirements for wind turbines (IEC 61400-1.2005, IDT) ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 31517.1-2022_English be delivered?Answer: Upon your order, we will start to translate GB/T 31517.1-2022_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 31517.1-2022_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 31517.1-2022_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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