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GB/T 45851-2025: Wind energy generation systems - Wind measurement of overview
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 45851-2025 | English | 214 |
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Wind energy generation systems - Wind measurement of overview
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GB/T 45851-2025
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Basic data
| Standard ID | GB/T 45851-2025 (GB/T45851-2025) |
| Description (Translated English) | Wind energy generation systems - Wind measurement of overview |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | F11 |
| Classification of International Standard | 27.180 |
| Word Count Estimation | 10,119 |
| Date of Issue | 2025-08-01 |
| Date of Implementation | 2025-11-01 |
| Issuing agency(ies) | State Administration for Market Regulation, Standardization Administration of China |
GB/T 45851-2025: Wind energy generation systems - Wind measurement of overview
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT45851-2025
ICS 27.180
CCSF11
National Standard of the People's Republic of China
Overview of Wind Energy Resource Measurement in Wind Power Generation Systems
Released on August 1, 2025
Implementation on November 1, 2025
State Administration for Market Regulation
The National Standardization Administration issued
Preface
This 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 equivalent to IEC 61400-50.2022 "Wind energy generation systems Part 50.Overview of wind measurement".
The following minimal editorial changes have been made to this document.
--- To coordinate with the existing standards, the name of the standard is changed to "Overview of Wind Energy Resource Measurement in Wind Power Generation Systems".
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Machinery Industry Federation.
This document is under the jurisdiction of the National Technical Committee for Standardization of Wind Power Generation (SAC/TC50).
This document was drafted by. Mingyang Smart Energy Group Co., Ltd., China Electric Power Research Institute Co., Ltd., and Shanghai Electric Wind Power Group
Co., Ltd., Yunda Energy Technology Group Co., Ltd., Envision Energy Co., Ltd., Goldwind Science & Technology Co., Ltd., CRRC Shandong
Wind Power Co., Ltd., CSIC Haizhuang Wind Power Co., Ltd., Hunan Xinglan Wind Power Co., Ltd., CRRC Zhuzhou Electric Locomotive Research Institute Co., Ltd.
Electric Division, Shanghai Electric Power Industry Co., Ltd., Nanjing Mulei Laser Technology Co., Ltd., Beijing Jianheng Certification Center Co., Ltd., China
Quality Certification Center Co., Ltd., Shanghai Zhongren Shangke New Energy Technology Co., Ltd., Jiangsu Goldwind Technology Co., Ltd., Beijing Ruike Tongchuangke
Technology Co., Ltd.
The main drafters of this document are. Zou Libing, Shi Yufeng, Fu Deyi, Jiang Yong, Yu Qingqing, Zhang Zhaozhi, Li Jian, Li Junwei, Yu Xueyuan, Guo Tao,
Xu Ke, Chen Yanan, Zhang Zhiwei, Liu Zhixin, Wei Ru, Yuan Ying, He Zhongyi, Hu Guoqiang, Yu Mengting, Guo Zitao, Wang Anqing, Li Peng, Jin Huabin,
Yuan Zongtao, Zhang Bingqian, Zhang Hao, Zhu Hailong, and Song Jun.
Overview of Wind Energy Resource Measurement in Wind Power Generation Systems
1 Scope
The IEC 61400 series of documents describes the technical requirements for wind turbines to the power grid. The IEC 61400-50 series of documents includes a
This sub-set specifies the requirements for equipment and methods used for wind measurement.
Wind measurements are required inputs in various test and analysis use cases within the IEC 61400 series of documents (e.g. power characteristics, resource
Although other documents define use cases for wind measurement, the IEC 61400-50 series of documents specifies the use cases for wind measurement that are independent of the use case.
The aim is to ensure that wind measurements and uncertainty assessments in these measurements remain relevant across the wind power industry.
The uncertainty in wind measurements can be quantified and kept within acceptable limits.
This document provides a basic introduction to the options available for wind measurement, which are covered in detail in other documents in the IEC 61400-50 series.
introduce.
2 Normative references
This document has no normative references.
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
complex terrain
The test site is surrounded by landforms that may cause airflow distortion, or areas or obstacles with significant changes.
3.2
Cut-inwindspeed
The minimum wind speed at which a wind turbine starts generating electricity.
3.3
Cut-out wind speed
The wind speed at which a wind turbine is disconnected from the grid due to excessive wind speed.
3.4
Dataset
A data set collected over a continuous period of time.
3.5
flow distortion
Changes in the airflow caused by obstacles, terrain changes or other wind turbines can result in changes in the measurement location and wind turbine
Differences in wind speed by location.
3.6
Hub height hubheight
< Wind turbine > The height from the ground to the center of the swept surface of the wind turbine rotor.
Note. The hub height of a vertical axis wind turbine is defined as the height from the centroid of the rotor swept surface to the ground.
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