energy storage solutions case study: off-grid cattle farm · 2019-06-19 · cattle farm energy...
TRANSCRIPT
Case Study: Off-grid cattle farm
Energy Storage Solutions
Alberto Tubella Australia Asia Pacific Manager [email protected]
Livestock farms for dairy
170,000€/year
Farm – charge profile
EXPECTED OUTCOME
- 52% OF POWER NEEDS
- 89,000 €/year
PROPOSAL
- PV: 380 kWp
- BATTERY STORAGE: 172 kWh
COST OF
COMPONENTS
PERFORMANCE OF
EQUIPMENT
PHYSICAL SPACE
FINANCIAL CAPABILITY
Criteria
Engineering decisions
Consumption/Production on a December day – All Panels
Solar Energy kWh – All Panels Consumption kWh
Consumption/Production on a June day – All Panels
Solar Energy kWh – All Panels Consumption kWh
Solar system Generation
C-RATE: 1C TEMPERATURE RANGE: -10ºC -50ºC HUMIDITY: 80% EFFICIENCY: 98% CYCLES: 6,000 SAFETY: No risk of explosion / inflammation SPACE CONSTRAINTS: Yes. Best energy density.
Battery requirements
CAPACITY: Initially, 172 kWh …
… but expandable
VOLTAGE: 480 Vdc (inverter related)
String of 24 eBicks in parallel (206 kWh)
eBick Module: 48V 8,6 kWh
Batteries – Base Module
LFP No danger of thermal runaway or fire No toxic elements No ventilation required No cooling required No safety monitoring equipment required Able to withstand high temperature environments
Battery Chemistry – Density vs Security
Batteries – Solution to voltage (and space)
Communications: CAN BUS or MOD BUS Protocols Temperatures: -10ºC -55ºC Cyclability: More than 6,000 cycles (1C, 85% DoD, 20ºC) Installation: Plug & Play Internal connections preassembled External connections: 1 Energy connector 1 Communications cable Protections: Overcharge Over discharge Short-circuit Over-current Over-temperature Passive balancing
Batteries – Additional points
Expected Consumption and Production
Monthly consumption of kWh
Direct consumption from panels + battery (kWh)
Direct consumption from panels
January February March April May June July August September October November December
What about the savings?
Batteries – Solution to scalability
Company
Other Products
