bhagat ram meena rajasthan engg. college dausa

1. A
SEMINAR ON
PRACTICAL TRAINING TAKEN
AT
220kV , G.S.S., R.R.V.P.N.L.
DAUSA
RAJASTHAN.
SUBMITTED TO: - SUBMITTED BY:-
Mr. KULDEEP VYAS BHAGAT RAM MEENA
Mr. NARESH GUPTA ROLL NO:-11EROEE009
ELECTRICAL DEPARTMENT 4th year (FINALYEAR)
Department of Electrical Engineering
RAJASTHAN ENGINEERING COLLEGE
DAUSA

2. CONTENT
 GENERAL DISCUSSION ON SUB STATION
 SINGLE LINE DIAGRAM
 POWER TRANSFORMER
 CAPACITIVE VOLTAGE TRANSFORMER
 CURRENT TRANSFORMER
 CIRCUIT BREAKER
 ISOLATOR
 BUSBARS
 LIGHTINING ARRESTER
 WAVE TRAP
 RELAY
 EARTHING
 CONTROL ROOM
 PLCC
 BATTERY SETS

3. POWER TRANSFORMER

4. INSTRUMENT TRANSFORMER
The transformer which are used in A.C system
for the measurement of current , voltage, power
and energy is called instrument transformer.
TYPES:-
CURRENRT TRANSFORMER
POTENTIAL TRANSFORMER
CAPACITIVE VOLTAGE TRANSFORMER

5. CURRENT TRANSFORMER
A CT is use for measurementof alternating electric current,The current
transformer is always
connected in series.a CT also isoletes the in the monitored circuit.
measuring instrument from what may be very high voltage

6. POTENTIAL TRANSFORMER
Used for step-down voltage for measurement protecting
& control.

7. ISOLATORS
Isolator is a switching devices used to open or
closed a circuit either when a negligible current exit ,
To disconnect transmission line under no-load
condition.

8. CIRCUIT BREAKER
A circuit breaker is a piece of
equipment which can:-
 Disconnect a circuit
automatically under fault
conditions.
 Open or reclose circuit either
manually or by remote control
under fault conditions.

9. Working of C.B.

10. LIGHTINING ARRESTER
These are classified on the basis of constraction the principle of operation of
each remains same i.e. providing low resistance for surge voltage to the
ground

11. WAVE TRAP
Wave trap is used to trap the communication signals &
send PLCC through CVT. It’s rating is 0.3mH.

12. INSULATOR
An electrical insulator is a materials whose interanal electrical charge do not flow
freely,and which there fore does not conduct an electric current ,under the influence of an
electric field. A perpect insulator does not exist ,but some materils such as glass ,paper and
teflon ,which have high resistivity ,are very good electric insulator .;

13. TYPES OF INSULATOR
PIN TYPE INSULATOR POST TYPE INSULATOR
SUSP. TYPE INSULATOR
STRAIN TYPE INSULATOR

14. RELAY
A relay is automatic device which senses an abnormal condition of electrical circuit
and closes its contacts. These contacts in turns close and complete the CB trip coil
circuit hence make the CB tripped for disconnecting the faulty portion.;

15. CONTROL ROOM
To operate all
the equipment
or device from
operator room is
called control
room.

16. GROUNDING
Ground is the reference point in an electrical circuit from which other
voltages are measured, a common return path for electric current (earth
return or ground return), or a direct physical connection to the Earth.

17. PLCC
Use of Power Line Carrier Communication (PLCC) in modern elctrical
power to provides for signal transmission down transmission line
conductors or insulated ground wires.

18. WORKING OF PLCC

19. BATTERY ROOM
In a GSS, separate dc supply is maintained for signalling remote
position control, alarm circuit etc. Direct current can be obtained
from 220volt 3 phase ac supply.

20. TOWERS
TYPES OF TOWER:-
 SUSPENSION TYPE
 ANGLE TYPE
 BT&AT TYPE

21. CONCULUSION
A substation is an assembly of apparatus, which
transform the electric energy from one voltage level
to another level. Hence a substation is an
intermediate link between the generating station
and consumer