FACULTY OF ELECTRICAL ENGINEERING Department of Electric power engineering and Ecology
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Transcript of FACULTY OF ELECTRICAL ENGINEERING Department of Electric power engineering and Ecology
FACULTY OF ELECTRICAL ENGINEERING
Department of Electric power engineering and Ecology
EXAMINATION PAPER TO PhD
THESISModeling of Electric Power
Networks Zaidan Mohamed BuhawaPilsen 2009 ADVISOR: doc.Ing.Emil Dvorský,CSc
Acknowledgement
Chapter one
Primary Energy Supplying in the World
The Primary Energy Supplying in the World
Fuel Shares of TPES from 1973 to 2005
Rate of world energy usage in terawatts (TW), 1965-2005
Global energy usage in successively increasing detail
Fuel typePower in
TW
Energy/year
in EJ
Oil 5.6 180
Gas 3.5 110
Coal 3.8 120
Hydroelectric 0.9 30
Nuclear 0.9 30
Geothermal, wind, solar,
wood0.13 4
Total 15 471
Percentage fossil fuel share in the world consumption in 2004
Shares of World Coal Consumption from1973 to 2005
Shares of World Oil Consumption from1973 to 2005
Shares of World Gas Consumption from1973 to 2005
Regional Shares of Nuclear Production from 1973 to 2005
Renewable energy ,end of 2006(GW)
Chapter two
Energy and sustainable
Development in Libya
Lib
ya s
atel
lite
imag
e
Type unit Production Consomption Export
Natural
gas[1012.m3/year] 12 3 9
Oill[1012.bbl/
year]0.6 0.1 0.5
Electricity [1012.W/year] 20 20 0
Energy production by the 2005 in Libya
Kafra Basin
Polaglan Basin
Sirte Basin
M urzuq Basin
G hadam es Basin
Cyrenaica Platform
Libya oil and gas basins
- Sirte Basin - Ghadames Basin
- Murzuq Basin - Kafra Basin
- Pelagian Basin - Cyrenaica Platform Basin
Total income from oil and gas as percentage of
GDP
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
1990 1995 2000 2001 2002 2003 2005
TP
ES
sh
are
[%]
0
2
4
6
8
10
12
14
16
18
20
To
tal
TP
ES
[M
te]
gas
oil
Total
Share of single PES on total consumption
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
1990 1995 1999 2000 2001 2002 2003 2005
Fin
ally
Co
nsu
mp
tio
n -
sh
are
[%]
0
1
2
3
4
5
6
7
8
9
10
To
tal
Fin
ally
Co
nsu
mp
tio
n [
Mte
]
electricity
gas
oil
Total
Shares of single final power sources
The growth of peak load
Locations of the electrical power plants
Total numbers of customers in electric system
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
1980
1984
1988
1992
1996
2000
2004
CO
2 em
itte
rs [
%]
0
10
20
30
40
50
60
To
tal p
rod
uct
ion
[10
- 9
kg
]
others
electricity
transport
industry
total
CO2 production by sectors
the average monthly Daily global radiation on the horizontal surface
Annual global irradiations on region’s surfaces
annual average wind speed at 80 m above ground level in m/s
Type Potential
Solar electricity 140,000 TWh/y
Wind electricity 15 TWh/y
Biomass 2 TWh/y
Total 157,000 TWh/y
Renewable energy sources for Libya
Electricity consumption in Libya and supply resources
PV isolated system in countryside
PV Water Pumping for livestock
Technology Total
PV 10 MWp
Wind 150 MW
Thermal Water heating 20,000 m3
Thermal electricity 20 MW
Thermal Desalination 20,000 m3
Hydrogen 20 KW
proposed plan of RES 2010-2020
Vision of a EUMENA backbone grid using HVDC power transmission
Chapter Three
The relation between the wind speed
and energy
Trans.Process
RES Electricity
Wind Turbine
Generator
Wind flow
Mechanical power
Electricity
block diagram how to produce the electricity by wind turbine
Speed and power relations..
Joules).V secondper rate flow .(Mass2
1gynetic.Ener 2ki
.
wattsAVVAVP 32
2
1).(
2
1
pCVAP ...2
1 30
2
])(1)[1( 200
V
V
V
V
Cp
Rotor efficiency versus Vo/V ratio has single maximum.
Rotor Swept Area
2
4DA
rotor) theofeight center).(H at theh rotor widt Maximum(3
2A
Air Density
TR
p
.
mH.10.194.1 40
Chapter Four
Electrical machine
ptTurbine power
Additional Rotor
Resistance rradd
xspeed
Pgt Active power
Speed
Squirrel Cage Induction Generatior
ptTurbine power
PWM Amplification, Real Part Pmd
PmqPWM Amplification, Imaginary Part
rraddAdditional Rotor Resistance
xspeed Speed
Active powerPgt
Ird,Irq Rotor currents
irss_,_
m
Real/Imaginary stator flux
Mechanical angle
Doubly-fedInduction generator
Power converter
Udc Uac Udc Uac
DCDCDCACACAC PIUIUP )Re( *
Chapter Five
Modeling and Simulations
Model of primary regulation of frequency
Graphical formulation of the equations.
The slope of the primary regulation of frequency
The complete program in run mode
Model of primary regulation of voltage
Thank
you