Power Plants with Webel Solar Modules
Power Plants with Webel Solar
Modules
17W Nautilus Water Pump imported fm
Australia X 2
80Wp Solar Panel X 1
Charge controller X 1
Galvanised Steel Pole (3 meters)
Amp and Voltage meter
Total cost : USD 3800.00 (with
maintenance)
Performance: Iavg at 11.9 volt is 4.1 Amps
(during day)
Module: 12V; 80 Wp – 320 pcs
Battery: 2V; 800 AHr – 120 pcs
Inverter: 15KVA (1 stand by) -- 3 pcs
Charge Controller Unit – 1 pc
Plant Control Unit – 1 pc
ACDB – 1 pc
Installation date: Feb 2001
Examples of failures due to
Hotspot
Examples of failures due to
poor contact
72,2°C
60
SP01
40
20
7,5°C
(Thermographic Pictures of
Modules)
Requirements and relevant
standards
• Safety requirements (System and Operator)
–
–
–
–
–
DIN VDE 0126
IEC 60364-7-712 Ed.1.0 -> safety class II
Accident prevention regulation
Operator protection measures
Lightning and over voltage protection system
• Components and systems
– Module: IEC 61215, 61646, 61730 etc.
– Inverter: EN 50 178, EMC EN 61000-6-3 EN 61000-6-1
• CE marking
– Low voltage directive
– EMC directive
• Grid connection
– Grid utility connection regulations (e.g. cos
etc.)
Standards to be used in a PV Power
plant
•
•
•
•
•
•
•
•
-Accident
prevention regulation
- The EC-Directives
– 89/336/EWG, EMC-Directive
– 73/23/EWG und 93/68/EWG, Low Voltage directive
IEC 60664 -Insulation coordination for equipment within lowvoltage Systems
IEC60364-7-712 - Electrical installations of buildings –
Requirements for special installations or locations – Solar
Photovoltaic (PV) power supply systems
EN 50110-1:2004 - Operation of electrical installations
IEC 6000-3-2:2005 - Electromagnetic compatibility (EMC) –
Limits for harmonic current emissions (equipment input current
< = 16 A per phase)
EN 50178: 1997 - Electronic equipment for use in power
installations
EN 61727: 1995 - Photovoltaic (PV) Systems – Characteristics
of the utility interface
Standards to be used in a
PV Power plant
• IEC 60364-4-41 - Low voltage electrical installations
– Protection for safety-Protection against electric
shock
• IEC 60364-4-443 - Electrical installations of buildings,
Part 4 – Protection for safety, Clause 443: Protection
against over voltages of atmospheric origin or due to
switching
• IEC 60364-5-52:2001 Electrical installations of
buildings – Selection and erection of electrical
equipment – Wiring systems
• IEC 60364-6 Draft
Low voltage electrical
installation Tests
Standards to be used in a PV
Power plant
• IEC 64/1123/CD Draft Insulation coordination for
equipment within low-voltage
• Systems. Requirements for special installations or
locations Photovoltaic power supply systems.
• IEC/EN 61140:2002 - Protection against electric
shock-Common aspects
• Installation and equipment
• PrEN 62305-1:2005 Draft
Protection against
lighting – Part 1: General principles
• PrEN 62305-4:2005 Draft
Protection against
lighting – Part 4: Electrical and electronic systems
within structures
Project realisation Installation and project development
• Receiving inspection specification for materials and equipments.
• Monitoring and Quality Control by stages of assembly, technical documentation
control (to avoid failures in the assembly).
• Parameters measurement in partial stages of the installation work.
• Partial freeing of installations according to the quality control by stages and
technical areas like:
Structure Assemblies
Earth Wiring, Connections and Wires
Modules Assembly
Electrical Equipment.
Security Systems, anti-thefts, …
Result: Quality controlled assembly procedures
Examples of failures
Examples of failures
After Project Completion
Comparison of the PV installation with the specification
The following should be checked in detail:
•PV-module (type, performance date, certificates)
•inverter (type, performance date, certificates)
•cabling (type, cross section, data, laying)
•connections and junction boxes
•module support construction and mounting
•general construction and orientation of the PV-generator (tilt angle, distances,
shading).
• check on suitability of installed components according to technical data and
requirements on components
After Project Completion
Inspection on safety and functionality test
The following should be checked in detail:
• installation concept regarding the fulfilment of safety relevant
requirements (protecting against hazard for persons and equipment)
• visual inspection of the PV installation based on DIN VDE 0100/600
• function test of relevant protection units e.g. over/ under voltage
monitoring, switches, measurement of insulation resistance of selected
module strings
Examples of failures
Pictures of different failures
After Project Completion
Follow up inspections to ensure a safe and proper
operation
Yearly:
Short inspection (visual inspection, spot check
measurements, function tests, inspection on monitoring data
(error messages, energy yield))
Every 3 years or as needed:
Detailed inspection (visual inspection, spot check
measurements, function tests, inspection on monitoring data
(error messages, energy yield), insulation resistance
measurements, string measurements)
Result: Keep functionality and safety of total system according to the initial
planning over the plant lifetime