Majid Mushtaq
St. Cloud State University
Agenda:
Electric Grid
 Components of Electric Grid
 Solar Generated Electricity
 Grid Connected PV System
 Conclusion
...
Electric Grid:
Interconnected network for delivering
electricity from suppliers to consumers
 Consists of generating stat...
3 components of Electric Grid:
Generation: creating electricity
 Transmission: Moving it from bulk
generators to distribu...
Solar Energy Potential:
 The

amount of solar energy that
reaches the Earth’s surface every
hour is greater than humankin...
Photovoltaic Cells (PV)
ii) Concentrating Solar Power (CSP)
i)
Photovoltaic Cells:
Photovoltaic cells convert light energy to
electric current by Photoelectric effect
 Produce direct c...
Photovoltaic Cells:
Concentrating Solar Power:
Requires direct sunlight
 use lenses or mirrors to focus large area
of sunlight into smaller b...
i) Power Tower:
ii) Parabolic Through:
When a solar energy system is connected to
the grid it is capable of sending electricity to
the grid that can be used at a...
Advantages:
Eliminates the need of batteries
 Reduces cost and maintenance


Highly efficient use of the system
 Long l...
Grid connected PV
Components:
Photovoltaic Cells
 Inverters
 Wiring
 Charge controller
 Disconnect switch
 Electrical...
Net metering:
Electricity delivered to the grid can be
compensated in several ways
 "Net metering", is where the entity t...
Grid Tie Inverter:
Special type of power inverter converts
DC to AC
 And feeds it into existing electrical grid
 During ...
Inverter:
Conclusion:
Cut-down electricity bill
 Renewable energy source
 Environment friendly
 Low or no maintenance cost

Solar and Electric Grid
Solar and Electric Grid
Solar and Electric Grid
Solar and Electric Grid
Solar and Electric Grid
Solar and Electric Grid
Solar and Electric Grid
Solar and Electric Grid
Solar and Electric Grid
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Solar and Electric Grid

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Solar and Electric Grid: A brief presentation.

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Solar and Electric Grid

  1. 1. Majid Mushtaq St. Cloud State University
  2. 2. Agenda: Electric Grid  Components of Electric Grid  Solar Generated Electricity  Grid Connected PV System  Conclusion 
  3. 3. Electric Grid: Interconnected network for delivering electricity from suppliers to consumers  Consists of generating station, transmission lines, distribution lines and substation  Maintains instantaneous balance between supply and demand 
  4. 4. 3 components of Electric Grid: Generation: creating electricity  Transmission: Moving it from bulk generators to distribution centers  Distribution: bringing it from substations to homes and industries 
  5. 5. Solar Energy Potential:  The amount of solar energy that reaches the Earth’s surface every hour is greater than humankind’s total demand for energy in one year  As of February 2006, Photovoltaic technology accounted for less than 1% of worldwide electricity generation.
  6. 6. Photovoltaic Cells (PV) ii) Concentrating Solar Power (CSP) i)
  7. 7. Photovoltaic Cells: Photovoltaic cells convert light energy to electric current by Photoelectric effect  Produce direct current which fluctuates with light intensity  For practical use it should be converted to a certain fix voltage or AC current through the use of Inverters. 
  8. 8. Photovoltaic Cells:
  9. 9. Concentrating Solar Power: Requires direct sunlight  use lenses or mirrors to focus large area of sunlight into smaller beam  Not very effective in cloudy conditions  Two approaches i) Power Tower ii) Parabolic Through 
  10. 10. i) Power Tower:
  11. 11. ii) Parabolic Through:
  12. 12. When a solar energy system is connected to the grid it is capable of sending electricity to the grid that can be used at a later time when the system is not producing electricity.  In the most simplest terms pulling energy from the grid when needed and supplying energy to the grid when energy is not being used at the solar site. 
  13. 13. Advantages: Eliminates the need of batteries  Reduces cost and maintenance  Highly efficient use of the system  Long life span   Ensures a constant supply of electricity
  14. 14. Grid connected PV Components: Photovoltaic Cells  Inverters  Wiring  Charge controller  Disconnect switch  Electrical Meter  Total system cost = ~ 8$/watt 
  15. 15. Net metering: Electricity delivered to the grid can be compensated in several ways  "Net metering", is where the entity that owns the renewable energy power source receives compensation from the utility for its net outflow of power.  For example, if during a given month a power system feeds 500 kilowatt-hours into the grid and uses 100 kilowatt-hours from the grid, it would receive compensation for 400 kilowatt-hours 
  16. 16. Grid Tie Inverter: Special type of power inverter converts DC to AC  And feeds it into existing electrical grid  During period of overproduction, power is routed into the grid  During insufficient power production it purchases power from utility company 
  17. 17. Inverter:
  18. 18. Conclusion: Cut-down electricity bill  Renewable energy source  Environment friendly  Low or no maintenance cost 
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