A PRESENTATIONON

132 KV GRID SUBSTATIONSITAPURA ,JAIPUR

Presented ToMs. Meesha Goyal EE Department

Presented ByKishan Kumar YadavSection A2SGVU111055594

RAJASTHAN RAJYA VIDYUT PRASARANNIGAM LIMITED (R.R.V.P.N.L)R.R.V.P.N.L is a company of Rajasthan State Electricity Board (RSEB) established by Government of Rajasthan.

Aim of R.R.V.P.N.L is to provide reliable mission service to customers.

132 KV G.S.S, Sitapura (JAIPUR) is a part of R.R.V.P.N.L.

CONTENTS:1.SUB STATIONS

2. LIGHTNING ARRESTER

3. BUS BAR

4.WAVE TRAP

5.TRANSFORMER

CURRENT TRANSFORMER

POTENTIAL TRANSFORMER

POWER TRANSFORMER

STATION TRANSFORMER

6. TRANSFORMER COOLING

7. ISOLATOR

8. CIRCUIT BREAKER

9. PROTECTIVE RELAY

10. INSULATORS

11. POWER LINE CARRIER

COMMUNICATION

12. CAPACITOR BANK

13. CONTROL ROOM

14. BATTERY ROOM

15. SINGLE LINE DIAGRAM

1. SUBSTATION A Station is a subsidiary station of an electricity generation, transmission,&

distribution system where voltage is transformed to high to low or the reverse using transformers.

A substation generally have switching, protection, & control equipment & one or more transformers.

CONSTRUCTIONAL FEATURES OF 132KV GSS SITAPURA,

• In this substation the power is coming from two lines namely

• 132 KV INDIRA GANDHI NAGAR

• 132 KV SANGANER

Outgoing feeders are• 33 KV NRI• 33 KV SITAPURA• 33 KV PRATAP NAGAR• 33 KV MICO• 33 KV TIJARIA• 33 KV STONE MART• 33 KV SEZ I• 33 KV SEZ II• 33 KV RAMCHANDRAPURA• 33 KV GONER• 33 KV PRATAP APARTMENT

132 KV Yard -

33 KV Yard

2. LIGHTNING ARRESTERLightning arrester is a protective

device which provides protection

against high voltage from lightning.

A Lightning arrester has two

terminal viz a high voltage terminal

and a ground terminal.

It is used only for overhead line.

3. BUS BAR• A Bus bar is a conducting bar that carries heavy currents to supply several electric circuits.

• Bus bar is made from ‘Cu’ and ‘Al’.

TYPES OF BUS BAR-1. Main Bus Bar2. Auxiliary Bus Bar

• One Bus Bar is Main Bus Bar and another is Auxiliary Bus Bar.

4. TRANSFORMER A Transformer is a static device that transfers Electrical energy from

one Electrical circuit to another Electrical circuit by means of a common Magnetic Circuit.

TRANSFORMER USED IN GSS

POWER X-MER

C.T.

P.T.

STATION X-MER

o POWER TRANSFORMER•To step-down the voltage and transfer power from one A.C voltage to another A.C Voltage at same frequency.

MAIN PARTS OF POWER TRANSFORMER-Winding(H.V winding , I.V winding) Core Tap changerConservator Tank Buchholz Relay Dehydrating BreatherOil Temperature Indicator Winding Temperature Indicator

oCURRENT TRANSFORMERCurrent Transformer is an instrument transformer used to protection & Metering of high values of current.

Current Transformer:- A C.T is used to step down current for measurement, control and protection.

oPOTENTIAL TRANSFORMER

Potential Transformer:- Potential Transformer are Instrument Transformer. A P.T is used to step down voltage for measurement, control and protection.

C.V.T. :- CVTs are special king of PTs using capacitors to step down the voltage. A capacitor voltage transformer (CVT), or capacitance coupled voltage transformer (CCVT) is a transformer used in power systems to step down extra high voltage signals and provide a low voltage signal, for measurement or to operate a protective relay

5.TRANSFORMER COOLINGONAN

Oil natural air natural

ONAF

Oil natural air forced

6. ISOLATORIt isolates the devices from

live line. When there is a

maintenance. It operates

when there is no load.

It is also used to change

bus bar line from main to

reserve or vice-versa.

7. CIRCUIT BREAKER A Circuit Breaker is an automatically or manually operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit.

TYPES OF CIRCUIT BREAKER- which is used in 132kv GSS sitapura

SF6 Circuit Breakers

Vacuum Circuit Breakers

SF6 C.B.

8. PROTECTIVE RELAYS• Protective Relay is a sensing device and it is designed to detect operating conditions on an electric circuit.

• It trips the circuit breaker, when fault is detected.

9. INSULATORSIn order to avoid current leakage to the Earth, through the supporting structure provide to the conductor of overhead transmission lines, insulators are used.

10. POWER LINE CARRIER COMMUNICATION

•For exchange of data and transfer message between grind substation , Voice communication is necessary. For this purpose high frequency Carrier current is transmitted on same transmission line on which power is transmitted.

Hence such communication is called-“POWER LINE CARRIER COMMUNICATION”.

.

Capacitor banks are used to improve the quality of the electrical supply and the efficient operation of the power system. Studies show that a flat voltage profile on the system can significantly reduce line losses.

11. CAPACITOR BANK

To remote control of power switch gear requires the provision of suitable control plates located at a suitable point remote from immediate vicinity of CB’s  and other equipment.

12. CONTROL ROOM

C & R PANEL

In a GSS, Separate dc supply is maintained for signaling remote position control, alarm circuit etc. There is a battery room which has 55 batteries of 2 volt.

13. BATTERY ROOM & CHARGER

Thank you