Ramveer olan seminar report for gss
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Transcript of Ramveer olan seminar report for gss
A PRACTICAL TRANING
SEMINAR
BY:-Ramveer Olan
Sub-station is a subsidiary station of
an electricity generation,
transmission and distribution system
where voltage is transformed from high to
low or low to high voltage using
transformers.
• Sub-station should be located at load
center
• Sufficient land area
• Grounding
• Easy of maintenance
• Possibility to Expand
• Reliability and Security
• Electrical design considerations
EQUIPMENTS OF SUB STATION : • Lightning Arrester • Wave traps• Isolator• Instrument Transformers• Power Transformer• Insulator• Circuit Breaker• Power Line Carrier Communication (PLCC)
• Lightning Arrester :-
To discharge lightning over voltages and
switching over voltages to earth.
• Wave Trap:-To prevent high frequency signals from entering
other zones.
• Isolators :-
Disconnection under no-load condition for
safety, isolation and maintenance.
TYPES OF ISOLATOR•BUS ISOLATOR•LINE ISOLATOR•TRANSFORMER ISOLATING SWITCH
TRANSFORMER A TRANSFORMER IS A STATIC AC DEVICE WHICH CONVERT ELECTRIC ENREGY FROM ONE FORM TO ANOTHER
1.INSTRUMENTAL TRANSFORMER CURRENT TRANSFORMER A C.T IS USED TO STEP DOWN CURRENT FOR MEASUREMENT,CONTROL AND PROTECTION
POTENTIAL TRANSFORMER A P.T IS USED TO STEP DOWN VOLTAGE FOR MEASUREMENT, CONTROL AND PROTECTION
2.POWER TRANSFORMER 1.CORE TYPE 2.SHELL TYPE
• Current Transformer :-
To step-down currents for measurement,
control & protection.
• Power Transformer :-To step-up or step-down the voltage
and transfer power from one a.c. voltage another a.c. voltage at the same frequency.
TRANSFORMER COOLING•Natural cooling
•Oil blast cooling•Forced oil cooling•Forced air cooling
TRANSFORMER USED
•There are 5 transformer are used in grid sub station1.220/132 (i) & (ii)2.132/33 (i) & (ii)3.132/11
• Circuit Breaker :-
Automatic switching during normal or
abnormal conditions.
CIRCUIT BREAKER•Minimum oil Circuit Breaker•Air Blast Circuit Breaker•SF6 Circuit Breaker•Vacuum Circuit Breaker
POWER LINE CARRIER COMMUNICATION (PLCC)•Wave trap
•Coupling Capacitor
EARTHING•Neutral Earthing
•Electric Earthing
PLEASE SAVE
ELECTRICITY
QUERY ?