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04.03.2013 vertraulich - confidential
Quality Assurance of PV Power Plants
Romanian Photovoltaic Projects Trade 2013
BEC-Engineering GmbH
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Innovative
Multidisciplinary Experienced
services and
solutions for
photovoltaic systems
and renewable
energies
successfully completed
services for more than
750 pv projects
worldwide correlating
with a total volume of
more than 1.250 MWp
engineers, physicians
and software developers
from project development
to applied research and
development
Independent
engineering company
with R&D department
Portfolio Overview – services for…
• Engineering & Project Management
Independent Project Management and Detailed Engineering for PV Systems up to multi MWp
• Quality Control & Certification
Examination and Characterization of Photovoltaic Modules and Systems to ensure Investment Quality
• Monitoring & Evaluation
Innovative Solutions for the Measurement and Evaluation of Photovoltaic Modules and Systems in field and lab
• Analysis & Optimisation
Expertises and Studies, Failure Analysis, Research Projects, System Optimisation and Operation Management
• Technical Support for all legal issues
Technical approval of contracts with suppliers, check of warranty conditions…
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successfully realized services for more than 750 projects worldwide
with a total volume of more than 1.250 MWp
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(Independent) Quality Management
Optimization of Return
Protection of Investment
Technology & Experience
• Specific Behaviour of
• CIS, CdTe, C-Si, a-Si, a-Si/µ-Si
• Inverter MPP-Tracking
• electrical and mechanical interfaces
Professional & Objective
• Analysis of
• stabilization
• degradation
• seasonal behaviour
• long term behaviour (degradation)
• early recognition of error pattern
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Field measurement
PV-Generator (basic architecture)
Field
measurement
Wechselrichter
Modul
String
Superstring
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on site measurement of pv modules with mobile pv lab
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Mobile PV laboratory (placed in Bucharest)
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Mobile PV-Lab – Measurement Possibilities Example EL-picture with strong cracks
measurement principle – mobile PV-Lab
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Example result – 1 MWp pv plant DC power distribution
-> Detection of low power strings and superstrings
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percentual deviation between measured and nominial power
nu
mb
er
of
str
ing
s
Average -8.0 %
Standard deviation 4.9 % Plant ****
Example result – 2 MWp on roof pv plant DC power distribution
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Air IR images equipment
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roof pv generator with overheated cells
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example result – field IR images
free field pv generator with different thermal Phänomena
Independent Performance Ratio measurement system
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Example
Performance Ratio Audit
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Monthly results of Performance Ratio depending to technology and seasons
BEC takes the closer look.
BEC-Engineering GmbH is listed as recommended company
in several renowned banks and insurance companies.
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BEC-Engineering GmbH
Bahnhofstr. 1
85586 Poing
Germany
Phone: +49 8121 884567 0
Fax: +49 8121 884567 88
E-mail: [email protected]
Web: www.bec-engineering.de
Thanks for your Attention
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BEC Research Testfield (2 hectar, close to munich)
example – R&D outdoor pv module test facility
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example result: characteristics of thin film module under outdoor conditions
Performance chart of thin film module
under outdoor conditions
initial stabilization of thin film modules
under outdoor conditions
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Lab
Measurement
example result: Lab EL + IR imaging – polycristalline cell with cracks
conspicuous EL image, consequences for the
power are difficult to quantify
an additional high-resolution IR image shows
clear significant consequences for the power
