‘ SMART GRID ’

PRESENTATION BYKABINDRA POKHAREL [BEL/069/226]

WHAT IS SMART GRID?

Electric grid : Interconnected network for delivering electricity from suppliers to consumers.

Smart grid : Grid that uses digital technology to improve reliability, resiliency, flexibility, and efficiency of the electric delivery system.

Alexander Graham Bell 

Thomas Alva Edison

WHY WE NEED SMART GRID ?

New dynamics of future demand and supply

Ageing infrastructure Complex interconnected grids Integration of large number of

renewable generation sources Reduce power outage To lower carbon emissions To improve power quality Demands of Consumers and Regulators

COMPONENTS OF SMART GRID

Smart Meter Phasor Measurement Unit Information Transfer Distributed Generation

Smart Meter

Records consumption of electric energy

Enables two way communication between central system and meter

Sends the data to utility and consumer

Phasor Measurement Unit High speed sensors  Measures the electrical waves on

an electric grid Used for power-system automation 

INFORMATION TRANSFER Wide Area Network(WAN): connects the smart meters,

service providers, and electric utility.

Local Area Network(LAN) : connects the in-house smart

devices across the home with the smart meter.

DISTRIBUTED GENERATION  Small hydro, biomass, biogas, solar

power, wind power, and geothermal power

 Located close to the load they serve Helps to decrease the carbon foot

print Reduce the demand on centralized

generation Helps to meet the peak demand

FEATURES OF SMART GRID Two way flow of power and

information Involvement of consumers

Demand Response and Real Time Pricing

Plug-in Hybrid Electric Vehicles Uses electricity as fuel Can supply the stored energy to grid at peak time

Self healing :

 Real-time monitoring and

Reaction

Anticipation

Rapid isolation

BARRIERS Technical issues like Voltage

instability Complexity Huge economical investment Prone to cyber crime Interference in the private life Health issues , RF emissions from smart meters

CURRENT STATUS China is investing  $61.4 billion Australia is investing $100M in smart

grids U.S.A. , Japan, Austria , U.K. ,Spain ,

France , Denmark etc are also working on it

South Korea  $65 million pilot program on Jeju Island  consists 6000 households; wind farms and four

distribution lines Aimed for nation-wide Smart Grid

implementation by 2030

THANK YOUKABINDRA POKHARELBEL / 069 / 226