1. Energy Storage Solutions & Applications Vikas K. Tyagi

2. Storage: A Potential Solution
Capacity firming output from solar Power Plant can be maintained at a committed (firm) level for a period of time to eliminate rapid voltage and power swings on the electrical grid.
Load leveling store the power during low demand and use the stored energy when the demand increases
Voltage support An energy storage system can help to maintain the
grid voltage by injecting or absorbing both active and reactive power.
Peak shaving Peak shaving is similar to load leveling, but may be for the
purpose of reducing peak demand rather than for economy of operation.
Improve Power System Stability

3. Understanding Energy Performance
The fundamental metrics used to define a storage technology for most electricity grid systems include:
Energy storage capacity [kWh or Ah];
Charge and discharge rates [kW or A];
Lifetime [cycles, years, kWhlife];
Roundtrip efficiency [%];
Initial capital costs
Operating costs

4. Types of Energy Storage
Electro
magnetic
Capacitors
Ultra Capacitors
Superconducting Magnetic Energy Storage (SMES)
Electro Chemical
Battery
Kinetic Energy
Flywheel
Design/Development Stage for high energy deamnd

5. Available Energy Storage Solutions
Lead Acid Battery
Li-Ion Batteries
NaS Batteries
Flow Batteries
Flywheels
Pumped hydro
Large Scale CAES
Applicable Grid System Size
< 10MW
> 100MW
25kW-10MW
100Kw-200MW
Mostly >200MW
>500MW
Life time(Years)
3-10
10-15 15
5-15 20
25+
20+
Lifetime
(cycles)
>100000
>50000
>10000
Efficiency (%)
70-90%
85-95%
80-90%
70-85%
75-85%
45-60%

6. Advantages and Constraints of Storage Solutions
Storage Technology
Advantages
Constraints
Lead-acid batteries
Widely available, moderate costs, modular
Limited lifetime, must be disposed of properly, must be maintained properly
Li-Ion batteries
Rapid technological improvement, compact in size
Rupture risk, little experience with use in electric grids
Na-S batteries
Can be used for ancillary services, high roundtrip effi ciency
Suitable only for larger electricity systems, corrosive chemicals
Flow batteries
Can be fully discharged, somewhat modular
Still under development, higher capital costs
Flywheels
Modular, low maintenance
Expensive
Pumped Hydro
Technically proven, low costs
Very large scale, significant environmental impacts of construction
CAES (compressed air energy storage)
Moderate costs
Very large scale, uses natural gas
Hydrogen
Can be used as a transportation fuel, compatible with fuel cells
Low roundtrip efficiency, expensive

7. Energy Storage Applications

8. DC protection and control
Energy Storage Applications
PV Plant
PV Modules
DC protection and control
DC/AC conversion
AC Protection
Grid
Energy Storage

9. Energy Gateway : Block Diagram

10. Energy Storage Applications Smart Grid
Energy Drawn from different sources
Micro Generation
Energy obtained on a small scale can reduce the demand on the grid
Larger Network
Can generate own power through solar panels, wind turbine and in turn can supply energy back to grid
Energy Storage
Energy generated during Non Peak times can be stored for future use

11. Rural electrification today New distributed power sources
Energy Storage Application :Rural electrification Off Grid with Energy Storage
Rural electrification today
Power supply unit
New distributed power sources
GenSet replaced by a main Power Supply Unit
GenSet with decentral PV and storage
For small and medium system with concentrated resources
For large system with dispersed generation (example: big island )

12. Off grid with PV, GenSet and storage
GenSet Diesel
Power supply unit
Power supply unit integrating
PV+Wind+Hydro + Genset
 Voltage fixed by Power Supply unit no control issue
 Reduced diesel consumption according to battery sizing
 GenSet is working only if low battery and no other resources

13. Energy Storage Solutions…User based
APPLICATION
FINAL USER involved
Remarks
Self Consumption
Industrial & domestic with PV
Feeding tariff push for self consumption
Peak shaving
Industrial, domestic, utilities, high eff. Building
Reduce cost of contract and infrastructure
Outage protection
Industrial, Domestic
Gen Set replacement, Industrial processes
Power Factor Correction
Industrial, Utilities
Standard not clearly defined
Energy shifting
REN producer, utilities
Reduce cost of infrastructure (ex. Wind)
Grid support
Utilities
New standard requirement (ex. CEI 016)
Charging station
Public customer, industry, private
electric vehicles
Hybrid power solution
Public, utilities, private (ex. Hotel)
Rural electrifications

14. Energy Storage Applications :Others
Black start Capability is the ability of a power plant / electricity system to start-up and provide necessary power to re-energize the grid and start other power generating systems without the use of an external power resource after a complete power outage or islanding situation.
Emergency power supply for protection and control equipment
Solar Powered Street Light system

15. SOCOMEC Group The benefit of a specialist
An independent manufacturer providing expert solutions for LV electrical networks “ ”

16. SOCOMEC Group Key figures
years 90
employees
3,200
subsidiaries 21
production sites 9
M€ turnover
443
product references
20,000
customers
20,000

17. SOCOMEC Group 4 fields of expertise
Critical Power
Ensuring the availability of high-quality power for critical applications
Power Control & Safety
Managing power and protecting individuals and property
Solar Power
Guaranteeing the safety and durability of photovoltaic (PV) facilities
Energy Efficiency
Improving building and facility energy efficiency

18. SOCOMEC Group Solar Power
Solar inverters
Supervision
Switching and isolating
Protection against overcurrents
and excess voltage
Prevention of DC insulation degradation

19. Solar System : Wide ApproachPV
Panels
FIELD
BOX
SOLAR
INVERTER
Solar Rooms
Infrastructure
Access
control
MONITORING

20. Socomec Solar : 3 AXES STORAGE GRID CONNECTED SOLUTION HYBRID
FOR RURAL
ELECTRIFICATION
1st stake : reinforcing our position as specialists.
We are product specialists, we must become specialists providing solutions.
We must draw up common offer packages.
Offers that combine equipment (solutions !) from SCP, UPS, EE, & SOLAR.
We will also need to get these to our customers. To do this, the commercial teams’ know how is complementary. 20

21. Sunsys Lithium
High rapid discharge performance (peak shaving applications).
High energy density.
Highly compact.
Easy scalability.
Easy to maintain (hot-swap plug-in).
Long life cycle.
Maintenance-free.
Zero environmental impact.
Rated Capacity 33KWh or 42KWh
Rated Load Time 4 hrs

22. Sunsys Lead Acid
High performance (e.g. maintaining battery charge, high number of charge/discharge cycles, etc.)
High energy density.
Solution suitable for fast charge systems.
Suitable for installations in harsh environments.
Highly compact.
Easy to service.
No maintenance contract.
Rated Charging Time 4 Hrs
Rated Capacity 22KWhr