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

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Faculty o

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• 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

simon.gamble@hydro.com.au

www.kireip.com.au

“KIREIP” iPhone app

Thank you