training from 220kv gss sanganer, which is located on muhana road, jaipur
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ASummer Training Presentation
on“Operation and maintenance of EHV equipment and
Transmission system”
Presented by:-
Vikas Jangir
Electrical Engineering
2013-2014
Rajdhani Engineering College Jaipur
Department of ‘Electrical Engineering
Introduction of a substation
Intermediate link between
Generating station & Consumers Important part of T&D Step down high voltages
Sanganer GSS Capacity : 220 kV,132kV,33 kV
220 kv GSS Sanganer• History of GSS.
1. Established in 19812 1981 – Heerapura 132kV was there3 1998 – KTPS 220kv was added4 2002 – Heerapura-I 220kv was added5 2005 – Heerapura-II 220kv added
• Incoming feeders.
1 Heerapura I – 220kV
2 KTPS – 220kV
3 Heerapura II -220kV
Outgoing feeders• 132kv lines
1. Mansarovar I 2. Mansarovar –II
3. Balawala
4. Niwai
5. Sitapura
6. chaksu
• 33kv lines
1. Muhana Mandi
2. Malpura
3. Vatika
4. Phagi
5. Sitapura
6. Sanganer
7. Durgapura-I
8. Durgapura-II
• 11kv lines
1. Tejawala
2. Industrial
3. Pream Nagar
4. Muhana
Single line diagram
GSS
Classification of substation. • Basis of Nature of Duties
1. Step-Up or primary Substations
2. Primary Grid Substations
3. Step-Down or Distribution Substations
• Basis of Importance
1. Grid Substations
2. Town Substations
• Basis of Service Rendered
1. Transformer Substations
2. Switching Substations
3. Converting Substations
Classification on the Basis of Operating Voltage
1. High Voltage Substations
2. Extra High Voltage Substations
3. Ultra High Voltage Substations
Classification on the Basis of Design
1. Indoor Type Substations
2. Outdoor Type Substations
Equipment For Substation• Lightning Arresters• Main Bus-Bars• Wave Trap• Switchgear• Power Transformer• Instruments Transformers• Capacitor voltage transformer• Isolators • Circuit Breakers • Insulators • Fuses• Protective Relays• Station Insulators• Batteries
Lightning arrester• Protective device• Equipment use power poles and towers, power
transformers, circuit breakers, bus structures, and steel superstructures in substations
Wave trapper • Trap signals and send it to PLCC control Room• For information purpose
Bus-bars• Carry electrical supply• Maximum load
Switchgears • Controlling equipment• Protecting equipment
1. Equipment • Air break Switches, Oil Switches,Isolators,Circuit breaker• Earthing Switch
•Air switch breaker • Isolators
Circuit breakers• Used to Close or open
electrical circuit • -It cab be operated manually
or automatically
Classification of C.B1. Water circuit breaker
2. Air circuit breaker
3. Air blast circuit breaker
4. Sulphur-hexa-fluoride circuit breaker
5. Vacuum circuit breaker
Power transformer
Types of Transformer
• Power transformer• Current transformer• Potential transformer• Capacitance voltage transformer• Distribution transformer
faults in transformer• Internal faults• External faults
Current transformer • Reduced high voltage in
a fixed voltage and measurements purpose also
Potential transformer• Measurement of electric
currents and protective relays
Faults in transformerExternal faults• Must be disconnected• Not allowed to operate for
long time• Failure of coolant
Protection• Buchholz protection• Overheating protection • Cooling fans
Internal faults• Short circuit in windings• Fire inside transformer • Over heating
Protection• Fire protection system• Protection against
magnetizing inrush current
Cooling in transformer
Fire protection system• N2O2• Nitrogen injection, when control panel receive indication
Substation earthing• Every instrument earthed• Lighting arresters
Control room
Protection
Battery Room• Very crucial section of GSS as batteries provide power
back up and also DC power for DC signaling of control equipments and fire protection system
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