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Simon Gamble
Manager Hybrid Off-Grid Solutions
3rd annual Remote Area Power Conference March 2016
Approach and lessons from
King Island and Flinders Island hybrid projects
• Government Business Enterprise – owned by State
• Australia’s largest clean energy producer
• Utility responsible for generation, distribution and retail in the Bass Strait islands
• Developer, owner and operator of leading hybrid off-grid systems
• King Island – 20 years of continuous development
• Flinders Island, Rottnest Island
• Leading advisor to aid agencies and utilities
• Hybrid system turnkey contractor, systems integrator
Hydro Tasmania Hybrid off-grid capability
King Island Renewable Energy Integration Project
Source : Google earth
King Island Development pathway
King Island Development pathway
King Island Proven, robust, reliable MW class advanced hybrid $2m savings p.a. >2,200hrs 100% RE operation
Winner 2013 innovation award
Operational Experience Dynamic resistor (1.5MW)
Grey areas show dynamic resistor controlling system frequency using excess RE.
• Controls system frequency utilising surplus RE
• Excellent availability and reliability
• Low cost and low maintenance
• Used instead of or in conjunction with energy storage
Supports system without diesel generation
• Adds inertia, voltage regulation, fault current
• D-UPS (combined with dynamic resistor) provides the functionality of diesels
• High availability & reliability, simple, low maintenance
• Significantly improved system security
Operational Experience Diesel UPS (2x1MVA)
Works in conjunction with the other enabling systems
• Reserve – assist diesel off at lower RE levels
• Power response – increases system security
• Frequency control – reduce “headroom” required for diesel off
Operational Experience Battery (3MW, 1.5MWh)
Experience
• Tendering indicated limited market experience with complexity of off-grid
• Introduce control complexity slowly – understand your system
• Commissioning can be complex and lengthy
e.g. battery providing reserves only at first
Operational Experience Demand management
Aggregates controllable customer load to provide ancillary services to support system during RE variation • Aggregation is a powerful mechanism – pop/load density? • Wireless communications are good but not infallible • Hardware rollout was more costly than anticipated • Lab testing invaluable
Operational Experience System performance to date
• Record for ZDO of 60.8 hours of continuous 100% renewable operation
• >2,200 hours of zero diesel operation
• Major wind turbine refurb required in 2014 & 2015 - impacted performance
• ~ 55% diesel savings for FY16 YTD
• Very noticeable stability improvement
• Significant improvement to SAIDI and SAIFI
100% RE system operation example Automated control of integrated enablers
King Island app & web site real time data www.kireip.com.au
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General:
• Renewable energy integration is the key, to increasing utilisation
• Holistic system wide planning is critical – develop a roadmap and conduct system modelling
• Economics drives optimum RE contribution level (not technical capability)
• High penetration RE requires alteration to standard operations - behaviour
• Easier to control cost than time – logistical challenges (allow significant float)
Project Planning:
• Involve site staff – integrate operational factors
• Test designs prior to rollout – dynamic studies / HIL / parallel operation
Lessons from King Island (1)
Implementation:
• Construction : manage contractors closely – near enough isn’t good enough
• Expect to problem solve – skilled multi-disciplinary onsite team is essential
• Significant cost benefits are possible through standardisation
Operations:
• Must be simple and robust e.g. DUPS no more complex than a diesel engine
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• Must default to fail safe operation with any system outage
• Documentation and training are critical – site capability will impact returns
Lessons from King Island (2)
Suppliers:
• Conduct due diligence – proven practical performance essential – conduct site inspections (far cheaper option than wrong solution choice)
• Experience for the specific application is critical – off-grid is different
• Ensure equipment will meet spec before delivery – Factory Acceptance Tests are worth the investment
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Community: critical to success
• Early and ongoing engagement – multiple channels – don’t assume > engage – consultative committee
Lessons from King Island (3)
Understand your business case:
• What items drive return? (RE / battery)
• Impact of externalities? (load / resource)
King Island
LLD Pilot
Progress Update
Faculty o
f S
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Technolo
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Faculty o
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nce, E
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ng &
Technolo
gy
• Office of Navy Research (ONR)
The USA Department of the Navy's
science and technology provider • Hydro Tasmania
• University of Tasmania
Participants
• ONRG grant awarded ($446,000).
• Hydro Tasmania collaboration
agreement signed (Feb 2016) • Procurement program concluded
with Penske Automotive (MTU)
awarded supply contract
• King Island site works and balance
of plant infrastructure program
commenced
• University of Tasmania laboratory
validation of low load diesel
modelling results underway
Flinders Island Hybrid Energy Hub $12.88m, 65% RE contribution November 2016 completion
Source : Google earth
Modular scalable enabling system “plug and play” approach : standard designs scale by deploying multiple units : integrated system
Flinders Island Project : 1.2MW system
e.g. battery module
Manufactured off-site for rapid deployment CSC certified for ease of transport Re-deployable
Flinders Hub Scalable modular enabling systems
Hydro Tasmania enabling modules:
• Fully automated hybrid power station controller
• Dynamic resistor – spill management
• Diesel-UPS flywheel – security / ancillary services
• Switchgear & communications
Market supplied:
• Toshiba battery
Diesel UPS module
Simpler Integration Flinders Hub site plan Simpler Integration
Existing Station Remains Largely Unchanged
New Modular Equipment
Flinders Hub progress 200kW Solar field
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Flinders Hub progress 900kW E44 Enercon wind turbine
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Site works yet to start View from new WTG location of existing 300kW WTG
Flinders Hub progress Diesel UPS module
Flinders Hub progress Battery module
Toshiba battery module:
• 750kW / 270kWh
• Lithium ion titanate
• Factory acceptance underway (Italy)
Rottnest Island Water and Renewable Energy Nexus
Existing power station
Existing wind
turbine
New PV array
Desalination Control
Control System and
dynamic Resistor
Supplying cleaner, lower cost energy and water services in remote communities Integrate wind and solar PV with water desalination (demand management)
Rottnest Island Water and Renewable Energy Nexus
Due for completion by March 2017 ($6.3m) • 600kW solar PV (600kW WTG existing) • Control system and dynamic resistor • Demand management of desalination – energy storage • Energy education centre • 45% RE contribution
Owners Engineer for Asian Development Bank, through our Entura professional services brand:
o Yap (Federated States of Micronesia) – wind, solar, diesel hybrid o Cook Islands – 100% RE islands project (6 systems) – solar, battery, diesel
Hybrid Off-Grid Solutions Project Portfolio
Further information:
Hybrid Off-Grid Solutions
Simon Gamble
www.kireip.com.au
“KIREIP” iPhone app
Thank you