NWTC: Working With Industry: Certification: Documentation Required
Certification
Documentation Required
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NWTC Wind Turbine Certification Testing
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IEC 61400-22 Required
Design Documentation
The numbered elements represent required
Type of Documentation Guidelines &
documentation. The unnumbered elements
SI Available
represent suggested information to be included in
the required documentation.
Drawings Analysis Specs
1.0 General Turbine Description Document
This document should include the
following information if applicable:
1.1 General Turbine Characteristics
U
and Configuration Description
Turbine description and general
U U
specifications
Major component weights U
Safety systems U
Electrical power system U
Electrical control system U
Hydraulics and pneumatics U
1.2 Summary Control Philosophy
General control philosophy U
Protection system U
2.0 Design Control Quality System Document ISO 9001
U Section 4.4 &
4.5
3.0 Control and Protection System Document
Description and component
U U U
specifications including transducers
Control system software U
Detailed logic flow chart U U
Safety system fault logic description U U
Emergency shutdown U U
Logic testing documentation U
Software release and version control U
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Overspeed sensing U U
Vibration sensing U U
Monitoring system U U
4.0 Loads and Load cases Document IEC 61400-1
Edition 2
(Section 3 & 4)
NREL
Significant
Interpretations
4.1 Gen. analysis approach and system NREL Loads
U U
model description. Guide
4.2 Document description and organization U
4.3 System dynamics model description
Degrees of Freedom U
Mass and Stiffness distributions U U
Aerodynamic inputs
U U
(airfoil tables, blade geometry, etc.)
4.4 Coordinate systems U
4.5 Partial safety factors U U
4.6 Material properties U
4.7 Model Validation
Analytical tests U
Comparisons w/ test data U
4.8 Dynamic behavior of all major
components and coupling of the system.
Campbell diagrams, U
Spectral plots U
Mode shapes & frequencies U
Comparisons between predictions
U
and measurements
4.9 Failure analysis (e.g. fault tree) U
4.10 Load cases
(from IEC 61400-1 plus any abnormal
cases)
Extreme loads U
Fatigue load cases U
Fault loads U
4.11 Loads should be detailed for the
following critical components:
Blade U
Hub U
Low speed shaft and bearings U
Mainframe and gearbox structure U
Gearing and drive train
U
(including gen., brake & couplings)
Tower top/yaw bearing U
Tower U
Tower base connection to foundation U
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NWTC: Working With Industry: Certification: Documentation Required
5.0 Structural Component Specification,
Drawings and Strengths Calculations
5.1 System Level Descriptions U
General Description U
List of drawings and drawing system
description. U
(e.g. drawing tree)
Assembly drawings U
5.2 Blade structure: NREL Stress
Guide /
Material Guide
Blade root U U
Blade buckling U U
Blade/hub joint U U
Blade Pitch Bearing NREL Bearing
U U U
Guide
Tip deflection analysis U
Aerodynamic brake mechanism U U U
5.3 Hub structure: NREL Stress
Guide /
Material Guide
Hub U U
Teeter Pin U U
Teeter Housing U U
Hub/low speed shaft joint U U
5.4 Low speed shaft structure: NREL Stress
Guide /
Material Guide
Low speed shaft bearings U U
5.5 Main frame structure: NREL Stress
Guide /
Material Guide
Nacelle cover U U
Mainframe U U
Mechanical brake U U U
Gearbox U U
Gearbox/mainframe connection U U
Gearbox/generator coupling U U U
Brake (peak torque rating plus energy
U U U
capacity)
5.6 Generator:
Generator/nacelle connection U U
5.7 Yaw mechanism:
Yaw bearing NREL Bearing
U U U
Guide
Tower top structure U U
Mainframe/yaw bearing connection U U
Yaw bearing/tower top connection U U
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5.8 Tower structure: NREL Stress
Guide /
Material Guide
Tower U U
Tower/foundation connection U U
6.0 Mechanical and Electrical Component
Specification and Performance Analysis
Documents
6.1 Mechanical Components
Transmission Gears, Bearings, Cooling, NREL Gearbox
U U U
Filtering and Seals Guide
Brakes (including power supply
U U U
requirements)
Aerodynamic Braking Devices (including
U U U
power supply requirements)
Yaw Drive (including power supply
U U U
requirements)
Pitch system (including power supply) U U U
Locking Devices (including power supply
U U U
requirements)
Auxiliary systems power supply U U U
6.2 Electrical Component drawings and UL Electrical
technical specifications Guide
One line diagram (basic power circuit
U
with safety devices)
Full power circuit schematic U
Electrical systems schematics U
Turbine power schematic U
Power Converter U U U
Cable suspension U U U
Cable twist U U U
Grid connection U U U
Generator system U U U
Contactors U U U
Grounding U U U
Lightning Protection U U U
7.0 Component Test Reports
7.1 Blade Structural Tests U IEC 61400-23
8.0 Plans / Manuals
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Specifications for how the turbine must
be installed, operated and maintained
are based on design on detailed
engineering
plans. These plans provide the rational
for the various operations are
considered separate and different
documents than basic instruction
manuals. These documents should
contain both the plans and the resulting
manuals.
8.1 Operating Plan & Manual NREL
U U Commissioning
Guide
8.2 Maintenance Plan & Manual NREL
U U Commissioning
Guide
8.3 Safety Plan & Manual U U
Fire protection U U
Protection from falling objects U U
Climbing provisions U U
Warning signs U U
Escape routs U U
Guarding U U
Securing points U U
Emergency lighting U U
High voltage equipment U U
8.4 Installation Plan & Manual NREL Commis-
U U
sioning Guide
9.0 Type Testing U
9.1 Safety Test and Dynamic Behavior Test
U IEC 61400-22
Report
9.2 Structural Load Test Report NREL Loads
U
Test Procedure
10.0 Turbine Characteristics Testing U
10.1 Power Performance Test Report U IEC 61400-12
10.2 Acoustic Emissions Report U IEC 61400-11
10.3 Power Quality Test Report U IEC 61400-21
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NWTC: Working With Industry: Certification: Documentation Required
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Prepared by
National Wind Technology Center
National Renewable Energy Laboratory
Operated for the
U.S. DEPARTMENT OF ENERGY
by the Midwest Research Institute
Updated: November 01, 1998
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