Technical Certification of Small Wind...

Technical Certification of Small Wind Turbines

March 2013

March 2013Technical Certification of SWT 2

Content

1. GL Introduction

2. Definition of Certification

3. Certification according to IEC 61400-2

4. Electro Magnetic Compatibility (EMC)

5. Advantages of certification

GL‘s History in Renewables (Wind)1977 First activities in Wind Energy1980 Examination GROWIAN and

small wind turbines 1984 Test Fields Pellworm /

Kaiser-Wilhelm-Koog1986 1st Guideline (onshore)1994 European Offshore Study

1st Offshore-Wind Guideline2001 start of FINO I research project2007 Expansion of services with

Helimax2009 Garrad Hassan joins GL2010 GL Onshore Guideline 2010

containing SWT2012 GL Offshore Guideline 2012

Our geographical reach –Experts in Renewables • ~800 staff

• ~40 locations• ~20 countries

BeijingTokyoShanghaiMumbaiBangaloreNewcastleMelbourneWellington

VancouverOttawa

PortlandSan Diego

Pagosa SpringsMontreal

PeterboroughAustin

MonterreyPorto Alegre

HeerenveenSint Maarten

Kaiser-Wilhelm-Koog

Bristol

CopenhagenHinnerupOldenburgHamburgWarszawa

Lisbon BarcelonaZaragoza

Madrid

GlasgowLondon

Slough

Content

1. GL Introduction

Definition of Certification (ISO / IEC 17000)Certification means in short:• Confirmation for compliance of a product (e.g. wind turbine)

with defined requirements (e.g. standard)

Do they match???

Certification – Applicable International Requirements

• IEC 61400-2:2006, Ed.2 „Design requirements for small wind turbines“

• IEC 61400-2, Ed.3 expected in 2013

• International Standard IEC 61400-series

• other national standards, e.g. DIBT, Renewables UK (BWEA), MCS, AWEA, DEO, etc.

Content

1. GL Introduction

Scope and extent of Application• Swept rotor area smaller than 200m²,

acc. to IEC 61400-2:2006, Ed.2 and • AC voltage <1000V or

DC voltage <1500V.

Source: Picture courtesy of Gaia-Wind.com, copyrights apply

• IEC 61400-2 deals with safety philosophy, quality assurance and engineering integrity

• Requirements for the safety of SWTincluding design, installation, maintenance and operationunder specified external conditions

• Appropriate level of protectionagainst damage from hazards from these systems during their planned life-time

General scope according IEC 61400-2

• Recommendation ISO 9001:2008regarding design, procurement, manufacture, installation, operation and maintenance of the SWT and their components

• External Conditions• Environmental (wind and others)• Electrical (network and local)• Soil conditions (foundation)

IEC 61400-2 evaluation pathSWT

voltage < 1000 V AC or < 1500 V DC

Area < 200 m²? IEC 61400-1

Determination of design loads, design data testing

Component test / analysis, static blade test

Electrical and protection system design

Duration test, system safety and function test

Certificate

Design methodology and loads• Simplified load equations

(horizontal axis, 2 or more blades, cantiliver blades, rigid hub)

• Aeroelastic modelling• Mechanical loads

testing

Source: Helix Wind

Component test / analysis, staticblade test

Electrical and protection systemdesign

Mass of nacelle

Mass of foundation

Spring, axialSpring, rotational

Mass of tower

Load calculations• SWT classes• Wind conditions

(normal and extreme)• Aerodynamic loads

(static and dynamic)• Inertial and gravitational loads

(gyroscopic, vibration, rotation, gravity, natural frequencies)

mean wind speedturbulence

-2000-1500-1000-500

10001500

200025003000

My – nick moment

Mx – rotor torque

Fx - thrust

Component test / analysis• Ultimate and fatigue strength of structural item

parts shall be verified by calculations• and / or tests to determine the structural

integrity of a SWT with the appropriate safety level (e.g. rotor, nacelle, tower, foundation, etc.)

• Rotor blade analysis and static blade test is required

Source: Aerogenesis Australia Pty. Ltd.

Protection System• Protection System shall be designed

to be fail-safe.

• Protect the SWT from any single failure or fault in a power source, or in any non-safe-life component within the control- and protection system.

• A failure shall not allow the turbine either exceed the maximum rotational speed or go into an unsafe state of operation.

• Testing and / or analysis shall verify the fail-safe behaviour of the system.

Electrical System• The electrical system of a SWT and

every electrical component used in it shall comply with the applicable portions of clauses of the IEC–series, the national standards and any local codes.

• Electrical systems are• Protective Devices• Disconnect Devices• Earthing Systems • Lightening Protection• Electrical Conductors

and Cables

Testing• Loads

• Tests to verify design data(for simplified load analysis or to verify aeroelastic model)

• Technical load testing (determine design loads)

• Duration testing(verify structural integrity, quality protection, dynamic behaviour)

• Mechanical component testing(e.g. static blade testing)

• Safety and function(behaviour and personal safety)

Measurements and Analysis Measurements

• Loads• Power curve and control behaviour• Noise emissions• Electrical behaviour (grid

compatibility)• Duration testing• and others

Expertise• Wind conditions• Energy production• Noise propagation• Shadow cast

Leistungskurven bei Nenndrehzahl

0 5 10 15 20 25 30 35

0°-2°1°4°7°10°

Accredited according to ISO/IEC 17025 and

other relevant standards

Documentation RequirementsThe manufacturer of the SWT shall provide a clear description of

• Assembly• Installation• Operation• Erection• Maintenance

The documentation shall be provided in manuals for the installer, owner and service personnel

Documentation Requirements (2)• Apart from the before mentioned

manuals, the following documentation will be required within the certification process:

• Assembly drawings• Single part drawings• Specifications• Analyses• Datasheets• etc.

• These documents shall proove a safe design in respect to the applicable standards.

GL Applicable Requirements

GL Guidelines

• Guideline for the Certification of Wind Turbines, Edition 2010

• Technical Note for Extreme Temperatures (here: Cold Climate)

• Grid Connection Compatibility of wind turbines according to Grid Codes

http://www.gl-group.com/GLRenewables

German Application Requirements

German (DIBt-) Regulations

• „Richtlinie für Windenergieanlagen, Einwirkungen und Standsicherheits-nachweise für Turm und Gründung“, Fassung Oktober 2012, DeutschesInstitut für Bautechnik (DIBt), Berlin

• Scope of application swept area <200m²

• Technical Note for German Type Approval, GL

Further Applicable Requirements

United Kingdom• BWEA, Small Wind Turbine Performance

and Safety Standard, 02-2008.• DECC Microgeneration Certification Scheme

(MCS), 2008.- Scope of application 50kW@11m/s

Denmark• Executive Order from the Danish Ministry for

Climate, Energy and Buildings No. 73 dated 2013-01-25: ”Bekendtgørelse om tekniskcertificeringsordning for vindmøller “(“Executive order on the technical certification scheme for wind turbines“).Incorporates the IEC 61400-22

Content

1. GL Introduction

Electro Magnetic Compatibility (EMC) - Basics

Source: GL GH

Basics: Electric voltage and current

Source: GL GH

Basics: Magnetic field

Source: GL GH

Basics: Electromagnetic field

Source: GL GH

Basics: EMC quantities

• Conducted quantities :• Electrical voltage and electrical current

• Radiated quantities :• Magnetic fields• Electromagnetic fields

Basics: Radiated emission

Basics: Radiated immunity

Basics: Conducted emission

Basics: Conducted immunity

The idea of EMC:

frequency frequency

European DRIECTIVES in generalProducts that „were placed on the marked and put into service“in the EuropeanUnion must apply all relevant European DIRECTIVES.Exapmles for wind turbines:• DIRCECTIVE 2006/42/EC (on machinery)• DIRECTIVE 2004/108/EC (on EMC)• DIRECTIVE 2004/40/EC (workers directive)

Annex within upcoming IEC 61400-2, Ed. 3Specifies test setup for• Measurements for radiated emissions• Measurements of conducted emissions

Content

1. GL Introduction

Why certify small wind turbines?• Safe product design – especially in

residential areas• Conformity to state-of-the-art• Ensuring Small Wind Turbine to be

fit-for-purpose• Trustable quality – important for the

strong growing SWT market• Reliable prediction of turbine life-

time• Increasing client‘s confidence• Avoiding damages and financial

Advantages of CertificationAn independent assessment of your productswill ease

• Approvals from Regulation Authorities worldwide

• Acceptance and favourable business conditions from financiers, insurers

• Positively influence on buying decisions of your customer

• Successful market entry and market growth through increased competitive advantage

by an accredited and internationallyacknowledged certification body.

Thank you very much for your attention!

Further InformationDipl.-Ing. Oliver MorbachDepartment Machinery Components and Electrical Engineering

Germanischer Lloyd Industrial Services GmbHRenewables CertificationBrooktorkai 1820457 HamburgGERMANY

Tel.: +49 (0) 40 36149 - 7578Fax: +49 (0) 40 36149 - 1720Email: oliver.morbach@gl-group.comwww: http://www.gl-group.com/GLRenewables

GL GH (Testsite)

Technical Certification of Small Wind...

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