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GB/T 19068.3-2019

Chinese Standard: 'GB/T 19068.3-2019'
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GB/T 19068.3-2019English319 Add to Cart Days<=4 Small wind turbines - Part 3: Wind tunnel test methods Valid GB/T 19068.3-2019
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Detail Information of 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: 18,170
Date of Issue: 2019-08-30
Date of Implementation: 2020-03-01
Older Standard (superseded by this standard): GB/T 19068.3-2003
Drafting Organization: China Aerodynamics Research and Development Center, China Agricultural Mechanization Science Research Institute Hohhot Branch Co., Ltd., Nanjing University of Aeronautics and Astronautics, Machinery Industry Wind Machinery Product Quality Supervision and Testing Center
Administrative Organization: National Wind Machinery Standardization Technical Committee (SAC/TC 50)
Regulation (derived from): National Standard Announcement No. 10 of 2019
Proposing organization: China Machinery Industry Federation
Issuing agency(ies): State Administration of Markets and China National Standardization Administration


GB/T 19068.3-2019
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 range 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.
Related standard:   GB/T 19068.1-2017  GB/T 19068.2-2017
   
 
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