M90 Energy Storage System - Redflowredflow.com/.../10/InterSolar-Presentation-UQ-M90.pdf · PV...
Transcript of M90 Energy Storage System - Redflowredflow.com/.../10/InterSolar-Presentation-UQ-M90.pdf · PV...
M90 Energy Storage System Large-scale PV Integration
Bruce Ebzery
10 July 2012
PV Panels and Energy Storage
2 x 340kW PV part of 1.2MW University of Queensland
(UQ) PV Installation
M90 connected to 340 kW multi-level carpark #2PV
M90
20ft shipping container 90kW / 180kWh
24 ZBMs
Installing the M90 at UQ
Inside View of M90
Installed M90 at UQ
Internal View of M90
Initial design CAD drawings
Power Tower
20kW 10kW 20kW 10kW 0kW 0kW
1. Grid only application
The system charges and discharges from and to the grid. No load connected at all times. (Ausgrid principle);
2. Grid connected with passive loads support The system charges and discharges from and to the grid and backups the loads in case of blackout. (AEST principle);
3. Renewables variability mitigation Grid oriented The system keeps a constant current set point (≠0 A) on the grid side, charging and discharging the ZBM according to renewables generation. No load connected at all times;
4. Renewables variability mitigation Grid oriented with Backup The system keeps a constant power set point (≠0 kW) on the grid side, charging and discharging the ZBM according to renewables generation. The load is supported at all times and backed up;
5. Renewables peak shifting Grid oriented The system keeps 0 A constant current set point, charging with renewables during generation times and dumping into the grid the excess power. At the selected time, the system discharges into the grid. No loads connected at all times;
6. Renewables peak shift Grid oriented with Backup / Grid virtual disconnection
The system keeps 0 kW constant power set point on the grid side, charging and discharging according to renewables generation, supporting the loads and sourcing or dumping into the grid in case of excess power needed or generated. (Newington House principle);
7. RAPS The system is connected to a generator and supports a mini-grid with loads and renewables. The generator is started and stopped accordingly to battery SoC or power requested.
M-Class Advanced Operations: Energy Storage Operating Modes
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UQ M90 and PV Output - Monday 2 July 2012
PV Power (kW) M90 Adjusted PV Power (kW)
Sunny mid-winter day in Brisbane
61.99% AC-AC efficiency
25.65 kWh delivered by M90
41.37 kWh consumed by M90
First Day of Operation
340kW PV 90kW / 180kWh M90
Second Day of Operation
266.7283 kWh In
158.82 kWh Out
59.54373 % Efficiency
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UQ PV and M90 Output - Tuesday 3 July 2012
PV Power (kW) M90 Adjusted PV Power (kW)
Sunny mid-winter day in Brisbane
59.54% AC-AC efficiency
158.82 kWh delivered by M90
266.73 kWh consumed by M90
340kW PV 90kW / 180kWh M90
First Four Days of Operation
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2-Jul 3-Jul 4-Jul 5-Jul
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UQ PV and M90 Output – 2 to 5 July 2012
PV Power (kW) M90 Adjusted PV Power (kW)
Sunny mid-winter days in Brisbane
Short period of cloud cover
ESS draws from grid to charge
340kW PV 90kW / 180kWh M90
Eighth Day of Operation
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UQ PV and M90 Output - Monday 9 July 2012
PV Power (kW) M90 Adjusted PV Power (kW)
59.93% AC-AC efficiency
Overcast mid-winter day in
Brisbane
153.45 kWh delivered by M90
256.04 kWh consumed by M90
340kW PV 90kW / 180kWh M90
More Operation
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Friday, 6 July 2012 Saturday, 7 July 2012 Sunday, 8 July 2012 Monday, 9 July 2012
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UQ PV and M90 Outputs - 6 to 9 July 2012
PV Power (kW) M90 Adjusted PV Power (kW)
Mostly fine/overcast mid-winter days in Brisbane
ESS draws from grid to charge
340kW PV 90kW / 180kWh M90
Smoother Output Curve
What is a ZBM?
ZBM Charge/Discharge Graph
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Smaller-Scale PV-Integrated Energy Storage
Energy Safe Victoria Trial 3-5kW PV panel
2 x 5kW / 10kWh ZBM 5kW / 10kWh LA batteries
7kVA diesel generator Average Australian household load