SUBMITTED TO: - SUBMITTED BY:-

Mr. KULDEEP VYAS BHAGAT RAM MEENA

Mr. NARESH GUPTA ROLL NO:-11EROEE009

ELECTRICAL DEPARTMENT 4th year (FINAL YEAR)

Department of Electrical EngineeringRAJASTHAN ENGINEERING COLLEGE

DAUSA

A

SEMINAR ON

PRACTICAL TRAINING TAKEN

AT

220kV , G.S.S., R.R.V.P.N.L.

DAUSA

RAJASTHAN.

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

BATTERY SETS

CONTROL ROOM

PLCC

POWER 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 TRANSFORMERPOTENTIAL TRANSFORMERCAPACITIVE VOLTAGE TRANSFORMER

INSTRUMENT TRANSFORMER

CURRENT TRANSFORMER

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

POTENTIAL TRANSFORMER

Used for step-down voltage for measurement protecting & control.

ISOLATORSIsolator is a switching devices used to open orclosed a circuit either when a negligible current exit ,To disconnect transmission line under no-loadcondition.

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.

Working of C.B.

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

WAVE TRAP

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

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 .;

TYPES OF INSULATOR

SUSP. TYPE INSULATOR

PIN TYPE INSULATOR POST TYPE INSULATOR

STRAIN TYPE INSULATOR

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.;

CONTROL ROOM

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

GROUNDING

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

PLCCUse of Power Line Carrier Communication (PLCC) in modern elctricalpower to provides for signal transmission down transmission lineconductors or insulated ground wires.

WORKING OF PLCC

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.

TOWERS

TYPES OF TOWER:- SUSPENSION TYPE ANGLE TYPE BT&AT TYPE

CONCULUSION

A substation is an assembly of apparatus, whichtransform the electric energy from one voltage levelto another level. Hence a substation is anintermediate link between the generating stationand consumer