Storage Workgroup August 6 th 2015 Issue Summary Issue 1 Liion and Flow Battery similarities and differences Liion battery terminology Bank gt String gt Module gt Cell From Andy Additional protection equipment String level or Module level how to include And how s ID: 784285
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Slide1
Storage ModelHierarchies
Storage Workgroup
August 6
th
, 2015
Slide2Issue Summary
Issue #1: Li-ion and Flow Battery similarities and differences:
Li-ion battery terminology:
Bank -> String -> Module ->
Cell
From Andy: Additional protection equipment @ String level or Module level – how to include? And how similar/different from Flow?
Flow battery terminology:
Bank
-> String ->
DC Battery -> Stack
->
Cell
Li-ion banks (for grid scale at least) are generally multiple strings
Flow battery banks are often just one string, so bank and string are equivalent
Issue: How to structure the models to build on similarities but not limit or bog down one technology?
Issue #2: Some workgroup participants have expressed interest in having models that “go further down the stack”. E.g. Li-ion Module model
Slide3Model Proposal
Model
Description
Fixed Part
Repeating Part
801
Energy Storage Base Model
Storage Device
TBD
802
Battery Base Model
Battery
Device
TBD
803
Lithium Ion Battery
Model
Li-ion Battery Bank
Individual Strings
804
Lithium Ion Battery String Model (
New
)
Li-ion Battery String
Individual
Modules
805
Lithium
Ion Module Model (
New
)
Li-ion Battery Module
Individual Cells
810
Flow Battery Model
Flo
w Battery Bank
Individual Strings
811
Flow Battery String Model (
New
)
Flow Battery String
Individual DC Batteries
812
Flow Battery DC Battery Model (
New
)
Flow Battery DC Battery
Individual Stacks
813
Flow battery
Stack Model (
New
)
Flow Battery Stack
Individual
Cells
Slide4Example #1: Simple Li-ion Battery
Common Model
801 - Storage Base
802 – Battery
803 – Li-ion Battery
String
1
String 2
…
String N
Terminator
Slide5Example #2: Detailed Li-ion Battery
Common Model
801 - Storage Base
802 – Battery
803 – Li-ion Battery
String
1
String 2
…
String N804 – Li-ion Battery String (String #1) Module 1 Module 2 … Module N804 – Li-ion Battery String (String #2) Module 1 Module 2 … Module N…804 – Li-ion Battery String (String #N) Module 1 Module 2 … Module NTerminator
Repeating string data in 803 model overlaps somewhat with data exposed in 804 models. 804 models presumably provide more detail.
Slide6Example #3: Super Detailed Li-ion Battery
001 - Common Model
801 - Storage Base
802 – Battery
803 – Li-ion Battery
String
1
String 2
…
String N804 – Li-ion Battery String (String #1) Module 1 Module 2 … Module N804 – Li-ion Battery String (String #2) Module 1 Module 2 … Module N…804 – Li-ion Battery String (String #N) Module 1 Module 2 … Module N -> continued
805 – Li-ion Battery Module (String
#1, Module #1)
Cell 1
Cell
2
…
Cell N
805 – Li-ion Battery Module (String
#1, Module #2)
Cell 1
Cell
2
…
Cell N
805 – Li-ion Battery Module (String
#2, Module #1)
Cell 1
Cell
2
…
Cell N
805 – Li-ion Battery Module (String
#2, Module #2)
Cell 1
Cell
2
…
Cell N
…
805 – Li-ion Battery Module (String
#N, Module #1)
Cell 1
Cell
2
…
Cell N
805 – Li-ion Battery Module (String
#N, Module #2)
Cell 1
Cell
2
…
Cell N
Terminator
Slide7Example #4: Simple Flow Battery
Common Model
801 - Storage Base
802 – Battery
811 – Flow Battery
String
DC Battery
1
DC Battery 2
… DC Battery NTerminatorNote: Only Flow Battery String model 811 is implemented since most flow batteries today are implemented as a single string. Flow Battery Bank model (810) could be implemented, but it would largely be redundant, so it isn’t required.
Slide8Example #5: Detailed Flow Battery
Common Model
801 - Storage Base
802 – Battery
811 – Flow Battery
String
DC Battery
1
DC Battery 2
… DC Battery N812 – Flow Battery DC Battery (DC Battery #1) Stack 1 Stack 2 … Stack N812 – Flow Battery DC Battery (DC Battery #2) Stack 1 Stack 2 … Stack N…812 – Flow Battery DC Battery (DC Battery #N) Stack 1 Stack 2 … Stack NTerminator
Slide9Example #6: Future Flow Battery
Common Model
801 - Storage Base
802 – Battery
810 – Flow Battery
Bank
String
1
String 2
… String N811 – Flow Battery String (String #1) DC Battery 1 DC Battery 2 … DC Battery N811 – Flow Battery String (String #2) DC Battery 1 DC Battery 2 … DC Battery N…811 – Flow Battery String (String #N) DC Battery 1 DC Battery 2 … DC Battery N
Terminator
In this example where there are three flow battery strings connected in parallel, the 810 Battery Bank model is implemented to provide aggregation