Renewable Integration: DeGrussa Solar Project
2017-03-21 – Andrew Drager (Director)
juwi at a Glance
Wind Energy
2,000 MW of installed capacity;
100 wind parks (900 turbines);
Solar Energy
2,000 MW of installed capacity;
1,500 PV Installations;
Company
1,000 employees worldwide;
$8 billion investment volume;
Top 10 largest solar EPC.
Location: Arizona (USA) 25 MWp, single axis tracker, Ronneburg (Germany) 20 MWp,
Malaysia 10MWp Carport, Oiniades (Greece) 3MW
4,000 MWp renewable energy completed worldwide
Off-Grid Projects
Off-grid Projects: Rwanda, Chile, Namibia, Egypt, Germany
Renewable Energy Integration
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Exit.
Speed Control
Voltage Control
Gov
Crank
AVR Sp
Ctrl
Fuel
Sync
Load Share
Unit
Vac
Vac
P%
Opn/Close
Close
Engine Controller /PLC
VacGen
VacBus
Close
Diesel Generator Control Hardware
The good old days Today
7
Speed Control
Droop CT
Close
Speed Control
Droop CT
Close
Battery Solar
Advantages
• Simple
• No Plant Controller
• No Communication
Disadvantages
• Limited Control
• Frequencey droop
Diesel Parallel Operation Droop Operation
8
Battery Solar
Diesel Parallel Operation Isochronous Operation
Advantages
• Fixed Frequency
• Optimised Dynamics
• Stability
Disadvantages
• Complex Control system
• Higher Capex
CAN-Bus
DeGrussa Solar Project
The Mine
Degrussa Mine:
Mining: Gold and copper;
Location: Doolgunna Region, WA;
Customer: Sandfire Resources NL;
Distance: 900 km North of Perth.
Power Supply:
Diesel Generators: 19MW;
Operator: 3rd party power station owner;
Avg. load: ~ 11MW;
Avg. consumption: ~ 100GWh p.a.
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The Solar Facility
Hybrid Power Plant:
PV-Modules: 10.6 MWp;
Tracking: East-West tracking;
PV-Inverter: 10 MW;
Storage: 4 MW / 1,8 MWh (6 MW peak);
Builder / Operator: juwi Australia;
Financier: ARENA, Neoen & CEFC.
Storage tasks:
Spinning reserve;
Ramp rate control;
Provide frequency support;
Power factor correction;
Diesel-off mode.
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Renewable Energy Integration at DeGrussa
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Simulation
Success:
1 minute solar yield
Optimisation
Challenges:
Diesel price forecast
Power station operation
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Solar inverters
Success:
Mass produced / off-the shelf inverters
Containerised solution
Challenges:
Energisation in mining environment
Remote fault-finding
Commissioning time required
UPS
15
Battery inverters
Success:
Reliability
Containerised solution
Challenges:
DC busbar connection
Commissioning time required
Diesel-off mode control
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Battery
Success:
Reliability and performance
HV busbar
Challenges:
Meeting the required standards
Balance of systems
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Control System
Success:
Ability for customisation
Ramp rate control
frequency support
Challenges:
Firmware upgrades impacting on system
Commissioning time required
Protection settings
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SCADA
Success:
Highly customised
Remote monitoring and reporting
Challenges:
De-bugging
Implementation of complex calculations
19
Diesel Network
Success:
Connection of HV
Dynamic spinning reserve
Challenges:
5MVA battery transformer energisation
Control system integration
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Benefits
Reduction in power costs:
Cheaper than Diesel? (subject to supply term);
Reduced exposure to power price rises:
Fossil fuel market prices;
Transport;
Exchange rate;
Current & future cost of CO2.
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Benefits
Technical Benefits
Energy security;
Improved power quality;
Better monitoring analysis;
Employee energy consciousness.
Social License
Sustainability image;
Local employment;
Increased marketing/recognition.
The Result
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The Result
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The Result
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The Result
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Thank You.
Andrew Drager
Directror
juwi Renewable Energies Pty Ltd
Level 1, 33 Queen St.
Brisbane Qld 4000
Tel. +61 7 3194 5052
Mob. +61 408 729 258
www.juwi.com