Download Introduction on technical guidelines for utilities integrating PV into

PPA SEIAPI
Technical Guidelines
SPC Regulators Workshop
Tonga 2016
Geoff Stapleton
SEIAPI Secretary
Background
• SEIAPI one of the original objectives was to develop
the technician certification scheme and company
accreditation scheme (more about that on Friday)
• Key requirement of any scheme is that there must
be standards or technical guidelines which certified
people must follow.
• This is also relevant re training courses—what
technical things should be taught.(more later today)
History of the Guidelines
• SEIAPI developed four regional guidelines in 2011:
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Grid Connected PV Systems- System Design Guidelines
Grid Connected PV Systems- System Installation Guidelines
Off-Grid PV Power Systems- System Design Guidelines
Off-Grid PV Power Systems - System Installation Guidelines
Workshops were conducted: first funded by SPREP in Nov
2011 in Fiji and then again in 2012 by IRENA in Palau and Fiji.
SEIAPI funded one in Cook Islands.
In 2014 they were re-edited and re-launched at the Energy
Ministers meeting as the PPA/SEIAPI Guidelines.
PPA World Bank Project
• Hybrid Power SystemsDesign Guidelines
• Hybrid Power SystemsInstallation Guidelines
• Energy Efficiency and
Energy Auditing
• Biofuels
• Micro/Minihydro(<4MW): Design
Guidelines
• Micro/Minihydro(<4MW):
Installation Guidelines
• Wind (<100kW used
in Hybrid power
Systems): Design
Guidelines
• Wind (<100kW used
in Hybrid power
Systems): Installation
Guidelines
• Wind (Grid connect):
Design Guidelines
• Wind (Grid connect):
Installation
Guidelines
• Wave Energy
• Solar water Heaters
STANDARDS- Australia/New Zealand
Related to Grid Connect
In Australia and New Zealand the following standards are
applicable: …
In Australia and New Zealand the relevant standards include:
AS/NZ 3000 Wiring Rules
AS 3008
Selection of Cables
AS /NZS4777 Grid Connection of energy systems by inverters
AS/NZS 5033 Installation of PV Arrays
AS 4509
Stand-alone power systems (note some aspects of
these standards are relevant to grid connect systems)
AS 3595
Energy management programs
AS 1768
Lightning Protection
IEC Guidelines +
• 61215 Crystalline silicon terrestrial photovoltaic (PV) modules—
Design qualification and type approval
• 61646 Thin-film terrestrial photovoltaic (PV) modules—Design
qualification and type approval
• 61730 Photovoltaic (PV) module safety qualification
– 61730-1 Part 1: Requirements for construction
– 61730-2 Part 2: Requirements for testing
• 62109 Safety of power converters for use in photovoltaic power
systems
– 62109-1 Part 1: General requirements
– 62109-2 Part 2: Particular requirements for inverters
• EN50521 Connectors for photovoltaic systems—Safety
requirements and tests
STANDARDS –USA
Related to Grid Connect Systems
In USA the relevant codes and standards include:
• Electrical Codes-National Electrical Code
• Article 690: Solar Photovoltaic Systems and NFPA 70
• Article 705: Interconnected Electric Power Sources
• Uniform Solar Energy Code
• Building Codes- ICC, ASCE 7
• UL Standard 1701; Flat Plat Photovoltaic Modules and Panels
• IEEE 1547, Standards for Interconnecting distributed Resources
with Electric Power Systems
• UL Standard 1741, Standard for Inverter, converters, Controllers
and Interconnection System Equipment for use with Distributed
Energy Resources
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Grid Connect Design Guideline
• The document provides the minimum knowledge
required when designing a PV Grid connect
system.
• The actual design criteria could include:
specifying a specific size (in kWp) for an array;
available budget; available roof space; wanting to
zero their annual electrical usage or a number of
other specific customer related criteria.
• For utilities and government-reducing fuel usage
Designing a System
• Whatever the final design criteria a designer shall be
capable of:
• Determining the energy yield, specific yield and
performance ratio of the grid connect PV system.
• Determining the inverter size based on the size of
the array.
• Matching the array configuration to the selected
inverter maximum voltage and voltage operating
windows
Topics Covered- Grid Connect Design
Guideline
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Site visit
Solar Irradiation Data
System Losses
Matching Inverter and Array
Energy Yield
Performance Ratio
Quotation Documentation
General
• The performance of a reliable installation that
fulfils a customer’s expectations requires both
careful design and correct installation
practice.
• Compliance with relevant Health and Safety
regulations is necessary.
• Guideline Provides minimum requirements
Topics Covered- Grid Connect
Installation Guideline
• PV Modules
• Orientation/location
of array
• Mounting array– roof top
– Ground Mounted
• PV Array DC Isolator
• Cable selection
• Protection
requirements
• Installing Inverter
• Inverter AC Isolator
• Connection at
switchboard
• Earthing/grounding
• Shut down
procedure
• Signage
• Commissioning
• Documentation
Off Grid Design guidelines
The design of any off -grid system should
consider, other than the electrical load, a
number of criteria such as:
o Budget
o Power quality
o Environmental impact
o Aesthetics
• Acceptable genset runtime
• Site accessibility
• Level of automation
Off Grid Design guidelines
This guidelines is based on d.c. bus systems and
do not include the new a.c. bus hybrid systems
currently available.
Guidelines dedicated to AC bus systems and
hybrid Systems will be developed.
Extra standards:
AS4086.2 Secondary batteries for standalone
system
Topics Covered
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Load Energy Assessment
Determining system d.c. voltage
Battery sizing and selection
PV Array Sizing
– Switched controllers
– MPPT’s
• Inverter sizing and selection
• Controller sizing and selection
• Generators (fuel) and battery chargers
Topics Covered- Grid Connect
Installation Guideline
• PV Modules
• Orientation/location
of array
• Mounting array– roof top
– Ground Mounted
• Battery Installation
• Ventilation
Requirements
• Inverter Installation
• Controller Installation
• Cable selection
• Isolation and
Protection
Requirements
• Shut down procedure
• Signage
• Commissioning
• Documentation
Further Information
www.seiapi.com
[email protected]