PowerGrid is composed of integrated 20-feet containers with all-in-one design providing unique advantages for grid storage projects. Available with advanced liquid cooling system, AC-DC inverters and a choice of battery cell and capacity configurations.
Maximum
Power output
Maximum
Storage capacity
Years
warranty + Support
Years
Capacity guarantee
Advantages
High density storage
up to 1.6MW/3MWh of battery storage capacity using best-in-class LFP battery cells from world leading providers.
Smart PowerPacks
Advanced Battery pack monitoring system with active balancing and efficiency over 99%. Independent battery stack inverter and monitoring.
Independent stack inverters
Each battery stack connects to a separate inverter for optimum capacity and efficiency over the life of the BESS.
Advanced Controllers
Integrated Storage Module controller and Energy Management Controller with interface to existing energy platforms or our open cloud platform. Status notifications via internet, 3G or optional satellite link.
All-in-one
Integrated Auxiliary transformer, Firefighting system, isolated HVAC system with liquid cooling option, Power Conversion System, simplified site installation.
150 days or less
All-in-one modular design accelerates manufacturing, installation and commissioning.
PowerGrid™ components
Intelligent grid storage system in a container.
The PowerGrid™ 20C1600K container contains:
- 64 PowerPacks, each containing 48 high capacity LFP cells in series and a Pack Controller (BMU).
- arranged in 8 stacks (also called strings) in parallel, each with 8 PowerPacks in series and a Stack Controller (CMU).
- Temperature control system with liquid cooling or heating for each PowerPack.
- 8 customized Power Conversion Systems (PCS) to convert each stack power to AC requirements from grid operator or to DC requirements for solar power hybrid systems.
- Complete firefighting system.
- Auxiliary power system.
- Storage Module Controller (GPC) to control and monitor all stacks and PowerPacks and monitor safety and store online statistical data for cells, battery packs and stacks.
- Energy Management Controller (EMC) to control inverters, grid connections, and provide standard interfaces to grid operator energy trading platform or to our GridControl real time distributed cloud energy storage platform.
- Backup 4G or satellite connection.
Cells
Lithium Iron Phosphate (LFP) cells from CATL, EVE or other leading manufacturer. standard format and capacity.
Pack
Pack Controller (BMU).
48 cells in series, with liquid temperature control system, active cell charging, balancing and monitoring.
Stack
Stack Controller (CMU)
8 PowerPacks in series, with data bus, monitoring, data storage, balancing of battery packs, stack DC bus monitoring, firefighting interface.
BESS
Storage Module Controller (GPC)
firefighting system, liquid temperature control units, weatherproof enclosures, sensors, switches
+ Energy Management Controller (EMC).
8 Power conversion Units, auxiliary power.
Independent Inverters
Independent PCS for each battery stack allows variable DC voltage profiles to maintain optimum charge and discharge status of each battery stack over time. Can prevent capacity loss caused by cross current and increase lifetime discharge capacity.
Over time, charge and discharge performance of parallel battery stacks will vary due to divergences in the internal resistance of the cells. Tests have shown that:
- the capacity loss increases by up to 2 % per year when eight racks are connected in parallel compared to non-parallel connections.
- when two battery stacks are connected in parallel and the SOC differs by 8%, after a complete charge-discharge cycle, the total discharge capacity of the energy storage system with independent PCS inverters (or floating DC-DC controllers) is increased by up to 7%.
Battery stacks with new and old battery packs can be combined, allowing them to be replaced and extended. Independent stack inverters also add to the ESS reliability and availability as stacks can operate fully independently.
3 level Control Architecture
- Battery pack monitoring unit (BMU) cell balancing and monitoring ensures optimum cycle life and safety for each cell in a PowerPack.
- Stack Controller (CMU) in each battery stack for independent stack monitoring.
- Intelligent Storage Module Controller (SMC) for cabinet monitoring and safety with separate Energy Management Controller (EMC) to monitor and control PCS for energy trading or Frequency Reserve applications.
PowerGrid™ ESS
6.4MW 12MWh
Energy Storage Subsystem with MV transformer and control cabinet.
Fully containerized grid subsystem with 6.4MW 12MWh nominal capacity:
- FOUR units of 20C1600K BESS containers each with 8 independent battery stacks with dedicated Inverters.
- ONE unit of 20CMV6400K MV container with a 6400 kVA transformer and LV and MV switchgear and metering.
- ONE unit of BESS subsystem control cabinet with networking and PLC controller for EMS FR services.
- All power and data cable for the subsystem to the MV container and control cabinet.
Guaranteed Performance
for 10 years in typical grid usage
All PowerCube™ containers and PowerGrid™ subsystems come with:
- 5 years parts and labour warranty with online support, next 2 business days on-site support and 97% availability guarantee.
- additional 10 years long-term support guarantee.
- 10 years (8,000 cycles) with guaranteed minimum storage capacity in excess of 60% of initial capacity.
NOTE: additional warranty and full operation and maintenance services are available for some projects.
Specifications
for PowerGrid™ 20C1600K
DC specifications
|
Cell type |
Lithium Iron Phosphate (LFP) |
|
Cell life cycle |
>70% Retention with 10,000 Cycles @ 0.5C 25 °C |
|
Cell specification |
3.2V/306Ah |
|
Rack rated energy capacity |
3,000kWh |
|
Rated voltage (at stack DC bus) |
1,228V average |
Standard AC Specifications
|
Rated AC power |
1,600kW |
|
Rated grid voltage |
690V |
General specifications
|
Dimension w/o clearances (L*W*H) |
6,058 * 2,438 * 2,896 mm |
|
Weight of whole system |
< 27 tons |
|
Degree of protection |
outdoor use |
|
Operating temperature range |
-35 °C ~ 45 °C |
|
Max working altitude |
3,000m |
|
Communication interfaces |
RS485 ModBus TCP connections to SCADA platforms or to open cloud platform. |
|
Certifications |
UL1973, UL9540A, IEC62619, CE, UN38.3, UN3536 |
Grid storage in 150 days or less.
Our project management and manufacturing teams are ready to support you.