220 Kv Kukas Presentation

7/27/2019 220 Kv Kukas Presentation

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Submited by:-

Lokesh Kumar Verma

VII Semester, IV Year

Electrical Engineering

Submitted To:-

Dr. Sunita RawatHead of Department

Electrical Engineering


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CONTENTS OF PRESENTATION :

Introduction

Bird view of Sub-station

220-KV Sub-station of K

Definition Of Sub-station

Types of Sub-Station

Functions of substation equipments

Single Line Diagram Of 220 kV G.S.S. Kukas


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This project includes study of transmission

lines, bus bars, circuit breakers, relay, isolators,

earth switches, various types of transformers

such as power transformers, capacitor voltage

transformer, current transformers, lightingarresters and grounding system of sub-station.


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Incoming feeders of 220 KV GSS, Kukas

220kV Incoming Feeders1.V.K.I.A

2.Alwar

3.Bassi

4.K.K.D.


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Outgoing feeders of 220 KV GSS, Kukas

220kV Outgoing Feeders1. V.K.I.A.

2. Alwar

3. Bassi4. K.K.D.

132KVOUTGOINGFEEDERS:1. KKD-I

2. KKD-II

3. V.K.I.A.

4. J/RAMGARH

33KV OUTGOING FEEDERS:1. DHAND

2. RIICO

11KV OUTGOING FEEDERS:1. RIICO

2. SHIV VILAS

3. KUKAS


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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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1. To Change voltage from one level to another.

2. To Regulate voltage to compensate for system voltage

changes.

3. To Switch transmission and distribution circuits into and outof the grid system.

4. To Measure electric power quantity flowing in the circuits.

5. To Connect communication signals to the circuits.

6. To Eliminate lightning and other electrical surges from the

system.

7. To Connect electric generation plants to the system.

8. To Make interconnections between the electric systems of

more than one utility.


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Transmission sub-station :-

A transmission sub-station is connects two or

more transmission lines.In such cases, the

substation contains high-voltage switches that allow

lines to be connected or isolated for fault clearance

or maintenance. A transmission station may have

transformers to convert the voltage from voltage level

to other level.


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Distribution sub-station :-

A distribution sub-station transfers power fromthe transmission system to the distribution system of

an area. It is uneconomical to directly connect

electricity consumers to the high-voltage main

transmission network, unless they use large amounts

of power. So the distribution station reduces voltage toa value suitable for local distribution.


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Collector sub-station :-

A collector sub-station steps up voltage to a

transmission voltage for the grid. The collector sub-

station also provides power factor correction, metering

and control of the wind farm. The collector systems

operates around 35 kv.


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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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Many types of equipments are used in sub-

station like Bus-Bar, Circuit Breaker, Isolators,

Earthing switch, Current Transformer, Voltage

Transformer, Lightning Arrester, wave trap, Power

Transformer, shunt reactor etc.


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Power Transformer :-

To step-up or step-down the voltage andtransfer power from one a.c. voltage another a.c.

voltage at the same frequency.


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Current Transformer :-

To step-down currents for measurement, control

& protection.


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CVT:-

A capacitor voltage transformer (CVT) is a transformerused in power systems to step-down extra high voltage

signals and provide low voltage signals.


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Circuit Breaker :-

Automatic switching during normal or abnormal

conditions.


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Isolators :-

Disconnection under no-load condition for

safety, isolation and maintenance.


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Lightning Arrester :-

To discharge lightning over voltages and

switching over voltages to earth.


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It is incoming 220 kv feeder bus from which the line is taken to the transformer for

further step down. There are two bus systems.

1 Double main bus & transfer bus system

2 Mesh (Ring) bus bar system

Bus Bar


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Relay

A relay is an automatic device by means of which an electrical circuit is

indirectly (opened or closed) and is governed by a change in the same or

another electrical circuit

There are many types of relay

1 Over current relay

2 I.D.M.T. fault relay

3 Impedance relay

4 Earth fault relay

5 Buchhloz relay

6 Differential relay

7 Auxiliary relay


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220 Kv Kukas Presentation

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