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GB/T 37257-2018 English PDF

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GB/T 37257-2018: Wind turbines -- Measurement of mechanical loads
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Basic data

Standard ID GB/T 37257-2018 (GB/T37257-2018)
Description (Translated English) Wind turbines -- Measurement of mechanical loads
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard F11
Classification of International Standard 27.180
Word Count Estimation 86,860
Date of Issue 2018-12-28
Date of Implementation 2019-07-01
Regulation (derived from) National Standard Announcement No. 17 of 2018
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 37257-2018: Wind turbines -- Measurement of mechanical loads

---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.
Wind turbines--Measurement of mechanical loads ICS 27.180 F11 National Standards of People's Republic of China Wind turbine generator mechanical load measurement (IEC 61400-13.2015, Windturbines-Part 13. Measurementof Mechanicalloads, IDT) Published on.2018-12-28 2019-07-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 symbols, units and abbreviations 4 5 Overview 5 5.1 Document Structure 5 5.2 Safety during testing 6 6 Test Requirements 6 6.1 Overview 6 6.2 Test site requirements 6 6.3 Load measurement conditions 7 6.4 Measurement parameters 11 6.5 Wind Turbine Configuration Changes 14 7 test equipment 14 7.1 Load 14 7.2 Meteorological parameters 16 7.3 Wind turbine operating parameters 17 7.4 Data Acquisition System 18 8 calibration coefficient determined 18 8.1 Overview 18 8.2 Load channel calibration 19 8.3 Non-load channel calibration 21 9 Data Verification 22 9.1 Overview 22 9.2 Verification check 22 10 Measurement data processing 24 10.1 Overview 24 10.2 Basic load 24 10.3 Loads of large wind turbines 24 10.4 Wind speed trend detection 25 10.5 Statistics 25 10.6 Rainflow Count 25 10.7 Cumulative Rainflow Spectrum 25 10.8 Equivalent fatigue load 25 10.9 Wind Speed Zone 26 10.10 Power Spectral Density 26 11 Uncertainty assessment 26 12 Report 27 Appendix A (informative) Example coordinate system 30 Appendix B (informative) Wind turbine generator load measurement uncertainty assessment process 34 Appendix C (informative) Sample format for mechanical load measurement and analysis 45 Appendix D (informative) Marine Survey Recommendations 57 Appendix E (informative) Load model verification 59 Appendix F (informative appendix) Wind speed trend identification method 63 Appendix G (informative) Data Collection Precautions 68 Appendix H (informative) Load calibration 71 Appendix I (informative) Temperature drift 74 Appendix J (informative) Mechanical load measurement of vertical axis wind turbines 76 Reference 80

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard uses the translation method equivalent to IEC 61400-13.2015 "Wind Generator Section 13. Mechanical Load Measurement". The documents of our country that have a consistent correspondence with the international documents referenced in this standard are as follows. ---GB/T 2900.53-2001 Electrotechnical terminology wind turbine (idtIEC 60050-415.1999) ---GB/T 18451.1-2012 Wind turbine design requirements (IEC 61400-1.2005, IDT) ---GB/T 18451.2-2012 Wind Turbine Power Characteristics Test (IEC 61400-12-1.2005, IDT) This standard has made the following editorial changes. --- Modified the standard name. This standard was proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Wind Machinery Standardization Technical Committee (SAC/TC50). This standard is mainly drafted by. Zhejiang Yunda Wind Power Co., Ltd., China Electric Power Research Institute Co., Ltd., Beijing Jianheng Certification Center Co., Ltd., China Resources Power Technology Research Institute Co., Ltd., China Classification Society Quality Certification Company, Xinjiang Goldwind Technology Co., Ltd. China Shipbuilding Industry Group Haizhuang Wind Power Co., Ltd., Gemei Wind Power (Tianjin) Co., Ltd., Shanghai Tianxiang Quality Technology Service Co., Ltd. Division, Beijing Xinye New Energy Technology Co., Ltd. The main drafters of this standard. Chen Qi, Xu Yili, Fang Yufeng, Cheng Mingzhe, Gong Yuxiang, Xue Yang, Fu Deyi, Wei Ru, Cai Jifeng, Huang Yutong, Wang Tieqiang, Lu Renbao, Yan Xinwei, Wang Shujun, Fang Ming, Liu Lei, Ye Juan, Han Huali, Wen Maoshi, Li Yue, Wang Chaofeng, Zhuang Yuexing.

Introduction

In the structural design of wind turbines, a comprehensive understanding and accurate quantification of loads is extremely important. In the design phase, the load can be predicted using aeroelastic models and related standards. However, due to the flaws in this model Uncertainty usually needs to be verified by measurement. Mechanical load measurement can be used as the basis for design and certification. The design of the wind turbine is detailed in IEC 61400-1, and the certification procedure is Described in GB/T 20319. This standard is for test institutions, wind turbine manufacturers and certification bodies, and specifies the mechanical load. The minimum requirements for the load test are to achieve highly consistent, high quality, repeatable test results. Wind turbine generator mechanical load measurement

1 Scope

In order to carry out the load simulation model verification, this standard describes the measurement of the basic structural load of the wind turbine. This standard specifies the field Ground selection, signal screening, data acquisition, calibration, data validation, load measurement conditions, capture matrices, post-processing, uncertainty calculations, and reporting Requirements and recommendations. In addition, informative appendices are provided to increase the level of awareness of test methods. The method described in this standard can also be used for mechanical load measurement for other purposes, such as statistical analysis of measured loads, straight design loads. Measurements, safety and functional tests or component load measurements. If these methods are used for other purposes or for unconventional wind turbines Design, the required signals, measured load conditions, capture matrix and post-processing methods need to be evaluated and adjusted as needed to Reach the corresponding goal. These methods are applicable to land horizontal axis wind turbines (HAWT) with a wind turbine sweeping area greater than.200 m2. However, the method can also It is suitable for other wind turbines (for example, small wind turbines, ducted wind turbines, vertical axis wind turbines).

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. IEC 60050 (all parts) International Electrotechnical Vocabulary IEC 61400-1.2005 Wind turbines Part 1. Design requirements (Windturbines-Part 1. Designrequire- Mess) IEC 61400-12-1 Wind Turbines Part 12-1. Power Generation Wind Turbine Power Characteristics Test (Windturbines- Part 12-1. Powerperformancemeasurementsofelectricityproducingwindturbines) ISO /IEC Guide 98-3 Uncertainty of measurement Part 3. Representation of uncertainty in measurement (Uncertaintyofmeas- urement-Part 3. Guidetotheexpressionofuncertaintyinmeasurement)

3 Terms and definitions

The following terms and definitions as defined in IEC 60050-415 apply to this document. 3.1 Blade blade The rotor rotates to produce aerodynamic components. 3.2 Leaf root bladeroot The part of the blade that is connected to the hub. 3.3 Brake state brakestatus The state of brake input or not. 3.4 Calibration Determine the transfer function from the sensor output to the physical quantity and its coefficients.

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