صفحه 1:
In the name of god
professor: doctor Nasrollahi
Student: esmaeel joobeh
Related lesson:technical language
Univercity : emam khomini behshahr
Date :1396/12/16
صفحه 2:
CONCEPT OF ENERGY 20
AND DISTRIBUTION
.لكت اوس ف ]رتك
cco nce 5۱۱9۵۵
rece سس ۳:۱۱
Concept of Energy Transmission and
Distribution............
صفحه 3:
Introduction:
> The purpose of the electric
transmission system is the
interconnection of the
electric-energy-producing
power plants or generating
stations with the loads. A
three-phase AC system is
used for most transmission
lines. The operating
frequency is 60 Hz in the
۱9۱۱۱2۰۵۰۵۰ وا موز مروت
Europe, Australia, and part
01 653
صفحه 4:
:5681605 وراه روت ۱
The generating station converts the stored energy of 5
coal, nuclear fuel, or water position to electric energy. The
most frequently used power plants are as follows: Thermal
power plant. The fuel is pulverized coal or natural gas. Older
plants may use oil. The fuel is mixed with air and burned in a
boiler that generates steam. The high-pressure and
hightemprature steam drives the turbine, which turns the
generator that converts the mechanical energy to electric
energy. Nuclear power plant. Enriched uranium produces
atomic fission that heats water and produces steam. The
steam drives the turbine and generator. Hydro power plants. A
dam increases the water level on a river, which produces fast
water flow to drive a hydro-turbine. The hydro-turbine drives a
generator that produces electric energy. Gas turbine. Natural
gas is mixed with air and burned. This generates a high-speed
gas flow that drives the turbine, which turns the generator.
صفحه 5:
صفحه 6:
Distribution
Substation
@ COMMERCIAL & INDUSTRIAL
BUSINESS CONSUMERS
@ DISTRIBUTION
AUTOMATION
DEVICES
@ RESIDENTIAL CONSUMERS
صفحه 7:
In power plants, power is produced at relatively
voltages (eventually 30 kV), and then by power p:
transformers, according to the length of the pipeline and
other network considerations, to a voltage between 115
and 765 kV (in Iran, this voltage is usually 400 kV)
Increases so that it can be transmitted i
oe ی
> As the transmission lines reach cities and population
centers for safety, the voltage decreases in several
steps. The stages of voltage drop in standard Iranian
networks are from kV230 / 400, kV132 / 230, 7
132 and kV20 / 63, respectively. In the final stage or
distribution stage, voltage transformers are reduced
from kV to 204 kV, or 231/400 volts. In other countries,
the consumer voltage is between 100 and 600 volts.
صفحه 8:
-
صفحه 9:
۱
A solar cell or solid state electronic component that converts the ro
sunlight directly into the electricity by the photovoltaic effect. Sol.
made of silicon wafer have many uses. Single cells are used to pr¢ تت
power of smaller devices such as electronic calculators. Photovoltaic arrays
generate recyclable electricity, which is mainly used in the absence of a
transmission and distribution system. For example, remote locations, orbiting
satellites, space probes, and remote access points can be pointed out. In
addition, the use of this kind of energy today is commonplace in places where
۱۱۶6 9 ۱۲۲5 5اه 9 8
صفحه 10:
ان
> The panel is the space in which the electrical equipment is installed. In
defining the panel, it does not necessarily need to be a metal closure, but
the metal closet is a type of panel. The problems caused by the
installation of equipment and the dangers of environmental factors and
phenomena such as short-circuiting that occurred in electrical equipment,
and the availability of all electrical components by the operator, led
manufacturers to provide more safety, hence The panel was designed in
the form of a closed box to make the equipment inaccessible.
صفحه 11:
i ae اا
صفحه 12:
» Control Devices:
> In an electric system, the voltage and currént
can be controlled. The voltage control uses
parallel connected devices, while the flow or
current control requires devices connected in
حلوك ركنن حتاوتت 05-7
> In recent years, electronically controlled series
compensators have been installed in a few
transmission lines. This compensator is
connected in series with the line, and consists of
several thyristor- controlled capacitors in series
or parallel, and may include thyristor-controlled
inductors. Medium- and low-voltage systems use
several other electronic control devices.
صفحه 13: