Disha NEET Physics Guide for classes 11 and 12.pdf
Presentation2
1. A
Practical Training
Seminar on
KOTA SUPER THERMAL POWER STATION
submitted to
MODI INSTITUTE OF TECHNOLOGY
NAYAGAON, KOTA
SUBMITTED BY:
ANIL GAUTAM GUIDED BY:
(B.TECH, VII SEMESTER) SUMAN PURI
H
FINAL YEAR
ELECTRICAL BRANCH
2. INTRODUCTION OF KSTPS
In kota super thermal power
station electricity is generated.
The project was proposed by
central electric authorithy of
india in April,1973.
The project was revised in
1975 and approved in sep.,1976
At first two units are installed
each producing 110MW of
power
3. DESIGNING OF UNITS
Unit-1 110MW
Unit-2 110MW
Unit-3 210MW
Unit-4 210MW
Unit-5 210MW
Unit-6 195MW
Unit-7 195MW
4. SITE SELECTION OF
POWER PLANT
• Availability of water
• Nearness to load centre
• Distance from populated area
• Availability of coal
• Transportation facility
• Ash disposal
7. ADVANTAGE OF PLANT
Fuel used is cheaper
Less space is required
Cheaper in production cost
Cheaper in initial cost compared to other
generating stations
8. DISADVANTAGE OF
THERMAL PLANT
• High maintenance and operating cost
• Requirement of large water quantity
• Handling of coal and disposal of Ash
• Pollutes the atmosphere
• Costlier in running cost
• Efficiency falls below 75% of full load
10. INTRODUCTION OF INDUCTION MOTOR
• An induction or
asynchronous motor
is a type of Ac motor
where power is
supplied to the rotor
by means of
electromagnetic
induction and
generate rotation
rather than by slip-
rings and
commutators as in
slip-ring Ac motors.
11. CONSTRUCTION OF INDUCTION
MOTER
• An induction motor consists of two parts
1. stator: when supplied with a 3-phase
currents, produce a magnetic flux. which is of a
constant magnitude but which revolves at a
synchronous speed.This revolving magnetic flux
induces an e.m.f. in the rotor by mutual induction
2. rotor:it has two types .
2.1 squirrel-cage rotor: squirrel-cage induction
motors employ squirrel-cage rotor.
2.2 phase-wound rotor : motors employing this type
of rotor ,such as ‘slip-ring’ motors or ‘wound’
motor
12. DIFFERENCE b/w SQUIRREL-CAGE
ROTOR&PHASE-WOUND ROTOR
SQUIRREL PHASE-WOUND
1. Rotor consists of a 1 Rotor consists of 3-phase
cylindrical double-layer distributed
laminated core with windings consisting of coils
parallel slots carrying the as used in alternator
rotor conductors. 2 Rotor is wound 3-phase
2. Each bar is placed in each even when the stator is
slot. wound 2-phase
3. Rotor bars are permanently 3 Requires additional
short-circuited on resistance in the rotor
themselves. 4 Under normal condition,
4. motor Run quietly slip- rings are
5. Reduces the locking automatically short-
tendency of the rotor circuited
13. PRINCIPLE OF OPERATION
• Depends on electromagnetic
induction
• A 3-Phase winding energized
from a 3-phase supply. A
rotating magnetic field set-
up around the stator at a
synchronous speed
• Rotating magnetic field
passes the air gap and acts
the rotor conductor
• e.m.f. induced in rotor
conductor and current start
flowing in rotor conductor
and mechanical force on
rotor produces a torque
14. TYPES OF INDUCTION MOTOR
• Rotary induction motor
• Linear induction motor
a. Stator is a straight track and rotor moves in track
when a current to stator
• Power input induction motor
a. Single-phase induction motor
i. not self-starting
ii. Split-phase motor, capacitor motor,shaded-pole
motor
b. Two-phase induction motor
c. three-phase induction motor
i. Stator & rotor
ii. Self-starting torque
15. Starting method of
induction motor
• Direct on line starting
• Stator resistance starting
• Auto transformer starting
• Star-delta starting
16. Direct on line starting
• Motor is connected
directly to 3-phase
supply and starting
current high 4 to 10
times the full load
current.
18. Auto-transformer
starting
Aim of this to a
reduced supply
at starting. As
the motor picks
up sufficient
speed.
19. Star-delta starting
star connection during
starting gives
Stator-phase voltage
is 1/sqr3 times
The line voltage and
staring torque
is 1/3 times the delta
value
20. ADVANTAGE DISADVANTAGE
1 Simple and extremely 1 Constant speed motor
rugged, almost 2 Starting torque is inferior
unbreakable construction to d.c. shunt motor
2 Low cost and very reliable 3 Speed decreases as the
3 Sufficiently high efficiency load increases unlike
4 No brushes are needed synchronous motor
5 No need of extra starting 4 High cost of Speed
motor control auxiliaries
6 Minimum maintenance 5 Low starting torque
7 Self starting torque
21. APPLICATION OF
INDUCTION MOTOR
• Used in industry with VFD’S Technology.
• VFD’S gives following points.
• Speed variation.
• High starting torque requirements.
• Low starting current requirements.
• High efficiency at low speed.
• In real time application, Domestic fans &
refrigerators.