1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 4143 Wind Turbine Generator Life Time Extension (LTE) STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGH
2、TED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Wind Turbine Generator Life Time Extension (LTE), UL 4143 First Edition, Dated February 9, 2018 Summary of Topics This First Edition of ANSI/UL 4143, the Standard for Wind Turbi
3、ne Generator Life Time Extension (LTE), covers requirements for the rules and procedures for the life time extension of wind turbines (LTE). The new requirements are substantially in accordance with Proposal(s) on this subject dated June 2, 2017 and December 15, 2017. All rights reserved. No part of
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8、omputer system. FEBRUARY 9, 2018 UL 4143 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL FEBRUARY 9, 2018 UL 4143 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION F
9、ROM UL FEBRUARY 9, 2018 1 UL 4143 Standard for Wind Turbine Generator Life Time Extension (LTE) First Edition February 9, 2018 This ANSI/UL Standard for Safety consists of the First Edition. The most recent designation of ANSI/UL 4143 as an American National Standard (ANSI) occurred on February 9, 2
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12、UL. COPYRIGHT 2018 UNDERWRITERS LABORATORIES INC. ANSI/UL 4143-2018UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL FEBRUARY 9, 2018 WIND TURBINE GENERATOR LIFE TIME EXTENSION (LTE) - UL 4143 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT
13、AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .4 2 Glossary .4 3 Units of Measurement .5 4 Undated References 5 CONSTRUCTION 5 General 6 6 Requirements for life time extension .6 6.1 General .6 6.2 Step 1: Requirements for external condi
14、tions 6 6.3 Step 2: Requirements for operational conditions 9 6.4 Step 3: Requirements for wind turbine model .11 6.5 Step 4: Requirements for RUL (Remaining Useful Life) 13 6.6 Step 5: Requirements for the inspection 13 6.7 Step 6: Risk analysis 14 Appendix A A1 Wind turbine control parameters b) D
15、etails of the site lay-out and change in layout; c) Wind farm layout coordinates d) Neighboring wind farms in a radius of 20 rotor diameters (past and future) e) Roughness map of the site in an area of 15 km around the site f) Assessment of complexity; and g) Assessment of obstacles. 6.2.6.2 Measure
16、ment equipment a) Details of met mast; b) Details of measurement equipment; and c) Description of data logging. 6.2.6.3 Other information a) Filtering and other data verication analysis; b) Calibration details; c) Details of the extrapolation models including the model validation; d) Details of the
17、wind modeling and uncertainties; e) Historical changes to the site/forestation (tree growth or logging); and f) Applicability of the measurements to past and future periods. In case of any possible changes to the site, these shall be considered in the extrapolation of data to future periods. 6.2.6.4
18、 Wind speed and wind direction a) General 1) The wind speed bin shall be 2 m/s bins or less; 2) Wind direction sector shall be 30 degrees or less; and 3) The wind speed shall be given as a 10 minute average. b) Methods for long term assessment 1) The long term measurements from met station along wit
19、h an appropriate co-relation technique (e.g. MCP) may be used; and FEBRUARY 9, 2018 WIND TURBINE GENERATOR LIFE TIME EXTENSION (LTE) - UL 4143 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2) The methods used for long term assessment shal
20、l comply with the Wind turbines Part 1: Design requirements, IEC 61400-1, Technical Guideline for Wind Turbines, TR06, Evaluation of Site-Specic Wind Conditions, MEASNET. 6.2.6.5 Wind speed distribution 1) The probability distribution function shall comply with Wind turbines Part 1: Design requireme
21、nts, IEC 61400-1. 6.2.6.6 Turbulence a) 10 minute average turbulence intensity values for each wind speed bin and each wind direction sector shall be used; b) The wake induced turbulence intensity shall be accounted in the assessment. The methodology shall be compliant with Wind turbines Part 1: Des
22、ign requirements, IEC 61400-1; and c) In case of a complex terrain, the site complexity shall be accounted in the turbulence intensity calculation. 6.2.6.7 Wind shear a) The wind shear at the on-site measurements location shall be calculated using two (2) anemometers with a minimum vertical spacing
23、of 20 m. For complex terrains, the wind shear shall be derived for each wind turbine location based on ow modeling. 6.2.6.8 Density, temperature, pressure, and humidity a) The minimum, maximum and mean values of density, temperature, air pressure, and humidity shall be used. 6.2.6.9 Flow inclination
24、 a) The ow inclination angle shall be analyzed for each wind direction sector. For complex terrain reference shall be made to the IEC 61400-1. 6.2.6.10 Electrical conditions a) The grid conditions of the site shall be evaluated for possible impact on the loads and performance of the wind turbines. 6
25、.2.6.11 Other environmental conditions a) Other environmental conditions with signicant impact on the loads of the wind turbine like extreme temperatures, earth quake, icing, tornados or hurricanes shall be taken into account for the load evaluation or considered in the risk analysis. Special attent
26、ion shall be given to geographical characteristics. FEBRUARY 9, 2018 WIND TURBINE GENERATOR LIFE TIME EXTENSION (LTE) - UL 4143 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 6.3 Step 2: Requirements for operational conditions 6.3.1 Operat
27、ional historical data of wind turbine(s) conditions relevant to the structural loading of the wind turbine(s) in the wind farm shall be characterized in accordance with the list of parameters in Appendix A1. 6.3.2 To assist in determining wind turbine(s) operational conditions the SCADA data and ope
28、rational and maintenance records shall be used. The respective source shall be named. 6.3.3 To reduce the analytical effort wind turbines can be grouped in cells represented by one wind turbine. The selection criteria for the cell denition shall be specied. 6.3.4 The following information shall be e
29、valuated as a part of the assessment: 6.3.4.1 General a) Source of the data (e.g. SCADA, OEM records); b) Material and software change logs; c) Criteria for the selection of the representative wind turbine(s); d) General description of the wind farm control and communication with the wind turbine co
30、ntroller; and e) The operational data of the wind turbine(s) including the load relevant events. 6.3.4.2 Load relevant transient events a) Transient events with signicant impact on the loads of the wind turbine(s) like: 1) Emergency stops (E-stops) and stops triggered by the safety system; 2) Stops
31、performed by control system; 3) Start ups; 4) Operation with yaw misalignment exceeding the design limits; or 5) Failure of wind turbine systems. b) Wind speed at hub height and electrical power (and/or operating mode), at which the event has occurred; c) Total number of events; and d) Type/reason of event and typology of the braking program used to stop the wind turbine. FEBRUARY 9, 2018 WIND TURBINE GENERATOR LIFE TIME EXTENSION (LTE) - UL 4143 9
