Date post: | 19-Jul-2015 |
Category: |
Engineering |
Upload: | md-raheel |
View: | 153 times |
Download: | 6 times |
Seminar on
Grid Energy Storage
Presented by
Md Raheel Ahmed
Introduction Simplified electrical grid with energy storage Forms of Storage
Air,Batteries,Electric vehicles ,Flywheel,Pumped Storage Hydroelectricity,Superconducting Magnetic Energy
Economics Benefits
Compressed air:
Compressed air energy storage is a way to store
energy generated at one time for use at another time
using Compressed air.
Liquid air :
Compress and cool air, turning it into liquid air ,
which can be stored, and expanded when needed,
turning a turbine, generating electricity
>85% efficient to start an engine to recharge the batteries.
A parked and plugged-in electric vehicle could sell the electricity from the battery during peak loads and charge either during night (at home) or during off-peak
When the electric power flows into the device, an
electric motor accelerates a heavy rotating disc. The motor acts as a
generator when the flow of power is reversed, slowing down the
disc and producing electricity.
Hydroelectricity is used to even out the daily generating load, by pumping water to
a high storage reservoir during off-peak hours and weekends, using the excess
base-load capacity from coal or nuclear sources.
Superconducting magnetic energy storage (SMES)
systems store energy in the magnetic field created by
the flow of direct current in a superconducting coil
which has been cryogenically cooled to a temperature
below its superconducting critical temperature.
Cost : The cost of storing electricity using batteries is
said to be 7.40 Rs/KWh.
Load leveling
Energy demand management
Portability
Electric supply
Grid stabilization,
Grid system >Discharge during peak demand: reduce
transmission capacity requirement
Renewable energy integration
Reliable voltage,power