GB/T 19068.3-2019 English PDF

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GB/T 19068.3-2019: Small wind turbines -- Part 3: Wind tunnel test methods
Status: Valid

GB/T 19068.3: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 19068.3-2019	359	Add to Cart	4 days	Small wind turbines -- Part 3: Wind tunnel test methods	Valid
GB/T 19068.3-2003	399	Add to Cart	3 days	Off-grid wind turbine generator system -- Part 3: Wind tunnel test methods	Obsolete

Similar standards

GB/T 19072   GB/T 19071.1   GB/T 19070   GB/T 19068.2   GB/T 19068.1   

Basic data

Standard ID: GB/T 19068.3-2019 (GB/T19068.3-2019)
Description (Translated English): Small wind turbines -- Part 3: Wind tunnel test methods
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: F11
Classification of International Standard: 27.180
Word Count Estimation: 18,189
Date of Issue: 2019-08-30
Date of Implementation: 2020-03-01
Older Standard (superseded by this standard): GB/T 19068.3-2003
Quoted Standard: GB/T 17646
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration
Summary: This standard specifies the requirements and methods for small wind turbines (hereinafter referred to as "units") to be tested in low-speed wind tunnels. This standard applies to small wind turbines with an output power of less than 10kW, and other forms of wind energy conversion devices can also be used for reference.

GB/T 19068.3-2019: Small wind turbines -- Part 3: Wind tunnel test methods

---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.
Small wind turbines - Part 3. Wind tunnel test methods ICS 27.180 F11 National Standards of People's Republic of China Replace GB/T 19068.3-2003 Small wind turbine Part 3. Wind tunnel test methods Smalwindturbines-Part 3. Windtunneltestmethods Published on.2019-08-30 2020-03-01 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, definitions and symbols 1 4 Basic requirements 2 5 Test procedure 4 6 Test method 6 7 Data collection and processing 10 8 Test report format and content 11

Foreword

GB/T 19068 "Small Wind Turbine" is divided into the following three parts. --- Part 1. Technical conditions; --- Part 2. Test methods; --- Part 3. Wind tunnel test method. This part is the third part of GB/T 19068. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part replaces GB/T 19068.3-2003 "Off-grid wind turbines part 3. Wind tunnel test method". versus Compared with GB/T 19068.3-2003, the main technical changes except editorial changes are as follows. --- Adjusted the scope of application of this section (see Chapter 1, Chapter 1 of the.2003 edition); --- Added normative references (see Chapter 2); --- Added some symbolic descriptions (see Chapter 3); --- Added basic requirements and updated the original technical conditions section (see Chapter 4); --- Added test procedures (see Chapter 5); --- Updated the test method (see 6.9.1.7, 4.9.1 of the.2003 version); --- Added test items (see 6.9.2); --- Increased requirements for data collection and processing (see Chapter 7); --- Revised some of the requirements for the test report (see Chapter 8, Chapter 5 of the.2003 edition). This part was proposed by the China Machinery Industry Federation. This part is under the jurisdiction of the National Wind Machinery Standardization Technical Committee (SAC/TC50). This section drafted by. China Aerodynamics Research and Development Center, China Academy of Agricultural Mechanization Sciences Hohhot Branch Co., Ltd. Division, Nanjing University of Aeronautics and Astronautics, Machinery Industry Wind Power Machinery Product Quality Supervision and Inspection Center. The main drafters of this section. Chen Li, Wu Jie, Ren Jun, Wang Wei, Xiao Jingping, Wang Qiang, Gao Chenming, Huang Zhixiang, Xu Chen. The previous versions of the standards replaced by this section are. ---GB/T 19068.3-2003.

Introduction

The wind tunnel is used for wind turbine test and performance test. It has many types of tests, short test period and reliable test results. It has been widely used in scientific research and small wind turbine testing. In recent years, wind tunnel test technology has been greatly developed. Test methods and technical indicators are also constantly updated. Domestic wind power industry independently develops high-performance products, not only through wind tunnel testing It can be tested, and the necessary parameters must be obtained through wind tunnel testing during the development phase to guide subsequent research and development and optimization. But because of the original Some indicators in the technical standards are backward, and some new test items are not included. It is no longer sufficient to provide standardized instructions for the current test work. There are obvious differences in the test data of different wind tunnels. This part is specially formulated to standardize test methods and improve the quality of tests. Small wind turbine Part 3. Wind tunnel test methods

1 Scope

This part of GB/T 19068 specifies the requirements for testing small wind turbines (hereinafter referred to as "units") in low-speed wind tunnels. And methods. This section is applicable to small wind turbines with an output power of less than 10 kW. The identification and evaluation of other forms of wind energy conversion devices are also Can be used for reference.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 17646 small wind turbine 3 terms, definitions and symbols The terms, definitions and the following symbols defined in GB/T 17646 apply to this document. CM. Wind wheel torque factor. CM0. Wind wheel torque coefficient corrected without the amount of interference from the wall. CP. Wind turbine utilization factor. Cpi. The pressure coefficient corresponding to the i-th measuring point. CP0. Wind turbine utilization factor corrected without the amount of interference from the tunnel wall. CT. Wind wheel thrust coefficient. CT0. Wind turbine thrust coefficient corrected without the amount of interference from the wall. FL. Wind wheel tangential force, N. FT. Wind wheel thrust, the axis of the wind wheel points backward, N. I. Unit controller output current, A. L. vertical distance between the tangential force line and the axis of the rotor, m. LSS. distance between the center of the rotor and the geometric center of the cross section of the test section, m. M. Wind wheel torque, N·m. Ms. Wind wheel starting torque, N·m. n. Wind wheel speed, r/min. Pi. the pressure value corresponding to the i-th measuring point, Pa. P∞. test model far-away free air pressure static pressure, Pa. P. Output power under standard atmospheric conditions at an altitude of 1000 m, W. PN. Wind turbine mechanical output power under standard atmospheric conditions at an altitude of 1000 m, W. Pt. static pressure test section of the wind tunnel test, Pa. q. Speed test in the wind tunnel test section, Pa. ......

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