Wind turbine generator system — Rotor blades
1 Scope
This standard specifies the general technical conditions of rotor blades of wind turbine generator systems.
This standard is applicable to the rotor blades of horizontal-axis wind turbine generator system with an area swept by the wind wheel equal to or greater than 40 m2.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For undated references, the latest edition of the normative document applies.
GB/T 1447 Fiber-reinforced plastics composites — Determination of tensile properties (GB/T 1447-2005, ISO 527-4:1997, NEQ)
GB/T 1448 Fiber-reinforced plastics composites — Determination of compressive properties
GB/T 1449 Fiber-reinforced plastics composites — Determination of flexural properties (GB/T 1449-2005, ISO 14125:1998, NEQ)
GB/T 1463 Test methods for density and relative density of fiber reinforced plastics (GB/T 1463-2005, ASTM D 792:1998, NEQ)
GB/T 2576 Test method for insoluble matter content of resin used in fiber reinforced plastics (GB/T 2576-2005, ISO 308:1994, MOD)
GB/T 2577 Test method for resin content of glass fiber reinforced plastics (GB/T 2577-2005, ISO 1172:1996, MOD)
GB/T 2900.53 Electrotechnical terminology — Wind turbine generator systems (GB/T 2900.53-2001, IEC 60050-415:1999, IDT)
GB/T 3354 Test method for tensile properties of oriented fiber reinforced plastics
GB/T 3355 Test method for longitudinal transverse shear (L-T shear) properties of fiber reinforced plastics
GB/T 3356 Test method for flexural properties of unidirectional fiber reinforced plastics
GB/T 3856 Test method for compression properties of unidirectional fiber reinforced plastics
GB/T 3961 Terms for fiber reinforced plastics
GB/T 19001 Quality management systems — Requirements (GB/T 19001-2008, ISO 9001:2008, IDT)
GB/T 25384 Turbine blade of wind turbine generator systems — Full-scale structural testing of rotor blades (GB/T 25384-2010, IEC TS 61400-23-2001, MOD)
GB/Z 25427 Wind turbine generator systems — Lightning protection (GB/Z 25427-2010, IEC TR 61400-24-2002, MOD)
ISO 12944.3 Paints and varnishes — Corrosion protection of steel structures by protective paint systems — Part 3: Design considerations
ISO 12944.5 Paints and varnishes — Corrosion protection of steel structures by protective paint systems — Part 5: Protective paint systems
IEC 61400-1:2005 Wind turbines — Part 1: Design requirements
3 Terms and definitions
For the purpose of this standard, the following terms and definitions as well as those defined in GB/T 2900.53, IEC 61400-1:2005 and GB/T 3961 apply.
3.1
design life
design service life under design conditions
3.2
rotor
wind turbine component composed of blades and hubs, which converts wind energy into mechanical energy
3.3
blade
component that makes the rotor rotate and generate aerodynamic force
3.4
reference chord
geometric chord of the blade at a certain position in the process of blade design, and the geometric chords of other positions of the blade take this position as reference; its position generally defined as 0°, that is, where the geometric chord is parallel to the rotation plane of the wind wheel
3.5
twist angle
angle between the local geometric chord and the reference chord of the blade
3.6
median line
curve that smoothly connects the inscribed circle centers of the upper and lower surfaces of the airfoil; in the front, the tangent point between the minimum inscribed circle and the airfoil contour is the starting point of the median line; at the tail, the tangent point between the minimum inscribed circle and the airfoil contour is the end point of the median line
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Abbreviations
5 Environmental conditions of design
6 Design requirements
7 Requirements for materials
8 Manufacturing control
9 Process requirements
10 Inspection rules and acceptance
11 Identification and accompanying documentation
12 Packaging, storage, transportation and lifting
Annex A (Normative) Analytical method of blade structural strength
