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T?V S?D: Partnership adds value
Photovoltaic Plant (System) Service Introduction ( )
T?V S?D Greater T?V S?D Greater China China

Content

1

T?V S?D Photovoltaic Business Introduction

2

What we inspect in PV system/plants

3

Module Quality is First

4

Standards related to PV System/Plant

5

Q&A

T?V S?D Group

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7 May 2012

T?V S?D Photovoltaic Business Introduction

T?V S?D Group

Access to Global Market

T?V S?D Group

The future is bright

5 May 2009 Slide 4

Test & Certification Service
PV Modules IEC/EN 61215 ( IEC/EN 61646 ( IEC/EN 61730-1,-2

Crystal Silicon Modules) Thin Film Modules)

PV

Components J-box: EN 50548:2011 Connector: EN 50521:2008 Cable: Draft DIN VDE AK 411.2.3:2008 : back sheet: test: IEC 60664-1 EVA: Partial discharge Peel strength test Customized test

PV

T?V S?D Group

The future is bright

5 May 2009 Slide 5

Test & Certification Service

(Balance of System , BOS) PV Inverter( ) EN 62109-1/-2; VDE 0126-1-1/A1; VDE-AR-N4105; BDEW … PV Combiner Box: EN 62109-1/ (82/594/NP) PV Array Tracker: EN/ISO12100 IEC 60034 ANSI/ UL 508A

T?V S?D Group

The future is bright

5 May 2009 Slide 6

Customized Service

Other Service R&D : Customized test service; Hotspot test service Lab consulting service T?V S?D Spectral response test ISO 9001 ISO14001, OHSAS 18001 Management service, such as ISO 9001/14001/18001

T?V S?D Group

The future is bright

5 May 2009 Slide 7

For Investor, Installer and Trader

Customized Quality service Product compare, and supplier evaluation Factory inspection Pre-shipment inspection Extensive service according to standards

T?V S?D Group

The future is bright

5 May 2009 Slide 8

T?V S?D Photovoltaic Business Introduction

T?V S?D Group

The future is bright

5 May 2009 Slide 9

Content

1

T?V S?D Photovoltaic Business Introduction

2

What we inspect in PV system/plants

3

Module Quality is First

4

Standards related to PV System/Plant

5

Q&A

T?V S?D Group

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7 May 2012

What we inspect in PV system/plants

(

)

T?V S?D Group

What we inspect in PV system/plants

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)

Site assessment

Design evaluation

Construction Monitoring

Operation Evaluation

Service Scope ?Permits and grid connection ?Site assessment ?Energy yield forecast ?Design review ?Technical due diligence ?Construction supervision ?Commissioning ?Operation & Maintenance ?Monitoring

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T?V S?D Group

What we inspect in PV system/plants

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)

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Essential Elements – – – Site assessment System evaluation Plant Performance and Safety

T?V S?D Group

Process of Technical Audit in PV Projects

Site assessment and system evaluation

? ? ? ? ? ? ? ? ? ? ?

Initial site inspection Energy yield calculation, incl. shading study Verification of quality of components (certificates, technical specifications) PV plant design (performance, safety, security) Referencing of suppliers Verification of load assumptions for structures Verification of geological survey In-depth analysis of technical file from civil and electrical engineering viewpoint Review of design Conformity with legislation and standards Extended testing and assessments if components not on ?white lists“

T?V S?D Group

Site Assessment

Site Assessment
? Shading (shading angles, shading between rows of modules, other sources like buildings, trees etc.) Emissions in the neighborhood (e.g. dust emitters) Climatic and weather conditions (e.g. frequency of foggy days, frequency of lightning, wind loads) Real estate situation (in the case of roof installation)

? ?

?

T?V S?D Group

Supervision during construction

Supervision during construction
?Several site inspections by civil and electrical engineers ?Technology shipment and hand-over inspections ?Connection inspections ?Inspection of rack construction and module mounting ?Schedule monitoring ?Financial monitoring

T?V S?D Group

Final inspection (incl. performance measurement)

Final inspection (incl. performance measurement)

? ? ? ?

Verification of conformity of the whole PV plant with applicable standards Measurement of performance Confirmation of quality of completed plant Verification of safety and security systems

T?V S?D Group

Potential technical risks in PV Projects

1.Risks of legal nature Failure to secure all necessary permits Failure to meet applicable environmental requirements and local technical legislation / standards 2.Risks pertaining to time limit on connection to grid Local authority permitting process Delay in supply chain Failure in meeting construction schedule 3.Risks from uncertified components Under-estimating the need for certified components (including PV modules, inverters, combine box, cable and etc.)

T?V S?D Group

Potential technical risks in PV Projects

4.Risks arising from poor design of PV plant Wrong assumptions in Energy Yield calculations Missing crucial checks / static loads, geological survey Unoptimised design resulting in worse performance ratio 5.Risk arising from poor quality of construction Lack of competent installation companies Insufficient third-party supervision 6.Risks concerning security aspects Inappropriate security system 7.Risks from inadequate provisions for O&M Insufficient maintenance intervals Failure to replace faulty components on time Warranty coverage of supplied components

T?V S?D Group

Problems onsite

Rack

Electrical Components

Modules

T?V S?D Group

Problems onsite
? By camera ? By IR camera

T?V S?D Group

Content

1

T?V S?D Photovoltaic Business Introduction

2

What we inspect in PV system/plants

3

Module Quality is First

4

Standards related to PV System/Plant

5

Q&A

T?V S?D Group

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7 May 2012

Module Quality is First

T?V S?D Group

Module Quality is First

T?V S?D Group

Module Quality is First

Electro-Luminescence Testing - Intermediate control during production EL Target ? to reveal micro-cracks and other defects hard to see

When ? before lamination ? after lamination

T?V S?D Group

Module Quality is First

T?V S?D Group

Pre-shipment inspection

Ensure Module Quality in Mass Purchase
Pre-shipment inspection of PV Modules

? ? ? ? ? ?

Safety check: insulation voltage testing, with factory’s high voltage tester. Performance check: flash measurement for power output, with factory’s sun simulator. I-V Components and materials check against certified components list. Documents check (rating label, certificate). Verification for packing, number of cartons, number of pallets Visual inspection (e.g. no cracked, bent surfaces, no broken cells, no bubbles or delaminations, no failure of adhesive bonds etc…). Module dimensions and weights.

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T?V S?D Group

Module Power

? ? ? ?

EPC

T?V S?D Group

Content

1

T?V S?D Photovoltaic Business Introduction

2

What we inspect in PV system/plants

3

Module Quality is First

4

Standards related to PV System/Plant

5

Q&A

T?V S?D Group

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7 May 2012

Standards related to PV System/Plant
Module Performance IEC/EN 61215 IEC/EN 61646

Module Safety IEC/EN 61730

Inverter & Combiner Safety IEC/EN 62019

Long term reliability test T?V S?D Thresher Test

System Safety IEC 62446

System Performance IEC 61724

T?V S?D Group

Standards related to PV System/Plant

IEC 62446: Grid connected photovoltaic systems –Minimum requirements for system documentation, commissioning tests and inspection Documentations Inspection Test

T?V S?D Group

Documentation

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System data – Basic system information – System designer information – System installer information Wiring diagram – Array - general specifications – PV string information – Array electrical details – Earthing and overvoltage protection – AC system Datasheets Mechanical design information Operation and maintenance information Test results and commissioning data

?

? ? ? ?

T?V S?D Group

Inspection & Test

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Normative Reference Standard
– – – IEC 60364 Low-voltage electrical installations / Part 1: Fundamental principles, assessment of general characteristics, definitions / Part 6: Verification /

?

Inspection
– – – – DC system inspection Protection against overvoltage / electric shock AC system Labelling and identification

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Testing
– – – – – – Continuity of protective earthing and/or equipotential bonding conductors Polarity test PV string - open circuit voltage measurement PV string - current measurement Functional tests PV array Insulation resistance test

T?V S?D Group

Standards related to PV System/Plant

Site assessment and energy yield production estimate IEC 61724 Photovoltaic system performance monitoring – Guidelines for measurement, data exchange and analysis Design review Review technical documentation

T?V S?D Group

Site assessment and energy prediction

Sunpath Shading, Orientation

GPS

Inclination of row

T?V S?D Group

Energy Production (Yield) Estimate
Input all data in the software

T?V S?D Group

Problems Onsite

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Problems in electric installation
– – Earthing not conform with requirements Wrong connection in positive and negative

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Problems in system design
– – – Shading among arrays No DC switch dis-connector in DC input Mechanical load of support not meet requirements

?

Problems in system installation
– – Corrosion between support and electrical junction points Outdoor electric equipment defects by installation

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Problems in operation & maintenance
– – Not clean dust and dirty on modules on time No good maintenance manual

T?V S?D Group

Content

1

T?V S?D Photovoltaic Business Introduction

2

What we inspect in PV system/plants

3

Module Quality is First

4

Standards related to PV System/Plant

5

Q&A

T?V S?D Group

38

7 May 2012

Any question, pls contact with T?V S?D!

Contact Information Mr. Zhang Defa Tel: 010-65906186-316 Mobile: 138 1051 2760 Mail: defa.zhang@tuv-sud.cn

T?V S?D Group

T Headline hank you for your attention.

www.tuv-sud.cn

T?V S?D Group

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7 May 2012


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