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Untitled Prezi

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by

Hessain Almenawy

on 24 June 2013

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Transcript of Untitled Prezi

Solar Tower Power Plant
Why Renewable Energy!
Recommendation for Egypt !

Conentrated solar power technology (CSP)
Why Solar Tower Technology!

Efficiency

Economically
Thermal storage
Hybrid operation
Cost
Operating temperature
Environmental Impacts
Negative Impacts
Positive Impacts
1-No Emissions
2-Green house effect
3-Huge Deployment
4-Reclamation of desert lands.
1-Effects on flora and fauna
3-Occupational hazards
4-noise pollution
5-Land use
7-Food Chain troubles
6-Shortage of water
Feasibility Study for 20 MW Solar Tower Power Plant in Egypt
20 MW Power station
Simulation Results
Prototype Simulation
Simulation Results
Graduation project
2013

Supervised by
Dr. Mahmoud El-Sayed Abosree
Dr. Mohamed Ahmed Ebrahim
The Sun
Sun properties
1-Radius
2-Effective temperature
3-Mean distance
Radiation
Solar Constant
Heliostat losses
Heliostats

Sun Tracking
Β + Ψ + arctan (Y/X) = 90
Environmental Assessment purpose
Conclusion:
The rotational horizontal movement is
15 degrees
per hour.
The rotational vertical movement is
6 degrees
.

Stepper Motor Control
Arduino Board
Interface circuit
Stepper Motor
Open loop control
Benefits
5-Low effect on the eco system
2-Visual pollution
Control Of Alternator
Heliostat Mechanism
Types of renewable energy
Wind Energy
Solar Energy
PV
Solar Thermal
Wind Energy
Solar
Biomass
Hydroelectric
Geothermal
Tidal
AC Synchronous generator
Theory of operation
-
Basic principle
-
Principle of operation
-
Field Excitation
Slip ring
Dc Generator
Brushless Exciter
Frequency&speed
Frequency (f) =(PN)/120 Hz
The rms values of the induced voltages
E(rms )=√2 ᴨ f Na φ kw
Power and torque
Parallel operation
Advantage of parallel operations
Conditions of parallel operation
1-Same terminal voltage
2-Same frequency.
3-same phase angle.
4-Same Phase sequence
1-continuity of service.

2-Efficiency
3-Maintenance and growth.
4-Load growth
Frequency control
Voltage control
F =(PN)/120 Hz
P(Const)
N(variable)
Governor
Speed(frequency)/Load(power) control
Over speed control
Over speed trip
Start up/shut down control
Automatic voltage regulator
Generator Protection
Reliability
Speed of response
Selectivity
Cost
Protection Scheme
Main Protection Devices
1-
Loss Of Synchronizing

Synchronizing Check relay(25)
2-
Stator phase fault
Differential Relay(87)
8-
Loss of field
3-
Over/underfrequency

4-
OverExcitation
5-
Reverse Power
6-
Thermal Over heating
(49)
7-
Faults outside zone
field Excitation relay(40)
Over frequency relay(81o)
Under frequency relay(82U)
Over excitation relay (24)
(32)
Time over current (51v)
Distance relay(21)
Coordination of generator protection with generator control capability
Over Excitation Limiter
Under excitation limiter
Generator Watt/Var Capability
Stepper motor
Types of stepper motor
variable reluctance
permanent magnet
Hybrid
Why Hybrid?
Vertical Motion
Horizontal Motion
Heliostat Mechanism
Solar Power Collection and conversion systems
Collection System
-
Tower

-
Receiver
-
Open volumetric air receiver
-
Molten salt receiver
-W
ater/Steam receiver
Types of receivers
Conversion System
Receiver
Rankine Cycle
Thermal Storage
Convenient location
Estimated output
Financial feasibility study
Investment cost/kW =
4,118 $/kW
Cost/kWh = 0.104$/kWh =
0.62 L.E/kWh

Simulation Results
3-Solar Thermal
1-PV cells
Advantages :
-No CO2 emission .
-Can installed in small scale .
-Can used in homes and farms .
-Clean energy .

Disadvantages :
-High initial cost .
-Low efficiency .
-Not Reliable .
-Storage system .


2-Wind
Advantages :
-
Low initial cost .
-Green energy .
-No CO2 emission .

Disadvantages :
-Noise Disturbances
-Threat to wildlife .
-Wind can never be predicted .
-Suited to particular region .
-Visual impact .

Advantages :
-Clean energy .
-No CO2 emission .
-ability to store thermal energy .
-have the ability to integrate in fossil fuelled plants for hybrid operation .
-Can work up to 18 hours per day .

Disadvantages :
-Suited to particular region (radiation & water resourses).
-It need large area (20,000 – 40,000m² per MW)
-Visual impact .


Agenda
1-Motivation
2-Overview on Concentrated Solar Power Technology
3-Solar Tower Power Plants
4-Environmental impacts
5-Pre-feasibility study for 20MW Solar Tower Plant in Egypt.
6-Sun and Radiation
7-Heliostat Mechanism
8-Solar power collection and conversion systems
9-Synchronous generators and its control
10-Simulation results and analysis
Full transcript