Ramveer olan seminar report for gss
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Transcript of Ramveer olan seminar report for gss
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A PRACTICAL TRANING
SEMINAR
BY:-Ramveer Olan
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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.
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• Sub-station should be located at load
center
• Sufficient land area
• Grounding
• Easy of maintenance
• Possibility to Expand
• Reliability and Security
• Electrical design considerations
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EQUIPMENTS OF SUB STATION : • Lightning Arrester • Wave traps• Isolator• Instrument Transformers• Power Transformer• Insulator• Circuit Breaker• Power Line Carrier Communication (PLCC)
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• Lightning Arrester :-
To discharge lightning over voltages and
switching over voltages to earth.
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• Wave Trap:-To prevent high frequency signals from entering
other zones.
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• Isolators :-
Disconnection under no-load condition for
safety, isolation and maintenance.
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TYPES OF ISOLATOR•BUS ISOLATOR•LINE ISOLATOR•TRANSFORMER ISOLATING SWITCH
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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
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• Current Transformer :-
To step-down currents for measurement,
control & protection.
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• 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.
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TRANSFORMER COOLING•Natural cooling
•Oil blast cooling•Forced oil cooling•Forced air cooling
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TRANSFORMER USED
•There are 5 transformer are used in grid sub station1.220/132 (i) & (ii)2.132/33 (i) & (ii)3.132/11
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• Circuit Breaker :-
Automatic switching during normal or
abnormal conditions.
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CIRCUIT BREAKER•Minimum oil Circuit Breaker•Air Blast Circuit Breaker•SF6 Circuit Breaker•Vacuum Circuit Breaker
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POWER LINE CARRIER COMMUNICATION (PLCC)•Wave trap
•Coupling Capacitor
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EARTHING•Neutral Earthing
•Electric Earthing
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PLEASE SAVE
ELECTRICITY
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QUERY ?
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