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1. CSEB substation TRAINING CENTRE-: CSPDCL CHHAWNI BHILAI TRAINING CENTRE-: CSPDCL CHHAWNI BHILAI SSGI,FET DEPARTMENT OF ELECTRICAL ENGINEERING S UBMITTED BY :-1. BHAVANA SAHU 2.MANYA E ROY 3.MINAKSHI SAHU 4. DIGESH KUMAR 30-Aug-16 1:22 PM

2. Introduction Line diagram of CSPDCL chhawni Power transformer Bus bar Current transformer Potential transformer Instrument transformer Circuit breaker Isolators Lightening arrestor Insulators Control pannel Capacitor bank Earthing Our experience 30-Aug-16 1:22 PM

3. A substation serves as source of energy supply for local areas of distribution This substation receive energy of 33KV and convert this into 11KV to supply the local areas and small industries The main function of substation are to receive energy transmitted at high voltage from the generating stations and supplied it to the local distribution areas Voltage on outgoing distribution feeders can be regulated at substation 30-Aug-16 1:22 PM

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5. Power transformer is used for either step up or step down the system voltages In substation it gradually step down the transmission voltage at distribution level Power transformer is used for the transmission purpose at high voltage greater then 33KV Power transformer are used for transmission as a step up devices so that the iron loss can be minimized for a given power flow 30-Aug-16 1:22 PM

6. To supply the voltage at various lines Interconnection of incoming and outgoing transmission line Used for carrying many connections through it Interconnecting generators to the main transformer in a powerplant 30-Aug-16 1:22 PM

7. A CT is an instrument transformer in which the secondary current is substantially proportional to primary current It is used to take the readings of the current entering the substation The main function of this transformer is distance protection and backup protection 30-Aug-16 1:22 PM

8. Primary winding has no. of turns and connected in parallel to the main circuit. Used to measure stepped down the voltage to a safe value. Used to feed the potential coils of indicating and metering relays. Designed to read the voltage phase and ratio relationship during metering.  POTENTIAL TRANSFORMER 30-Aug-16 1:22 PM

9. Combination of current transformer and potential transformer It is used to step down the current or voltage to measurable values To insulate the metering circuit from the primary high voltage system This is connected at Input side as well as Output side of substation 30-Aug-16 1:22 PM

10. A  circuit breaker  is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by over current or over load or short circuit. Its basic function is to interrupt current flow Protect the circuit from high current. Protect the circuit in overload condition. 30-Aug-16 1:22 PM

11. Isolator is a mechanical switch which isolates a part of circuit from system as when required It is also used as circuit breaker in some cases The use of this isolator is to protect the transformer and other instrument in the line 30-Aug-16 1:22 PM

12. Lightning arrester is one of the main components to protect the system from surge. It is used in the incoming feeders so that to prevent the high voltage entering the main station Lightning arrestor do not let the lightning to fall on the station 30-Aug-16 1:22 PM

13. Used in electrical system to prevent unwanted flow of current to the earth from its supporting points It prevent any leakage current from the conductor to earth The other function is to carry tension and weight of conductor 30-Aug-16 1:22 PM

14. Pannel room is central controlled room of substation panels are useful to control the flow of electricity as per the Voltage class it detect the faults in transmission lines It contains meters control switches and recorders 30-Aug-16 1:22 PM

15. A set of capacitors that are ground up together either in parallel or in series Capacitor bank have the power of storing a large amount of electrical charge Capacitor bank increases the power factor of the substation 30-Aug-16 1:22 PM 30-Aug-16 1:22 PM

16. Connection of the neutral of the supply system to the general mass of the earth It is used to avoid electric shock It is used to avoid risk of fire due to earth leakage current through unwanted path 30-Aug-16 1:22 PM

17. How the transformers,isolators works How we can manage peoples working together at same place How to distribute works among workers 30-Aug-16 1:23 PM

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