Presentation - Elec Distribution

7/23/2019 Presentation - Elec Distribution

1/16

KNOWLEDGE SHARINGELECTRICAL POWER

DISTRIBUTION PCC, MCC

Presented byBASKARAN


2/16

AGENDA Session Introduction

Electrical Power Distribution

Diferent Voltage Levels

P

!

"y#ical P $eeder "y#ical ! $eeder

%t&er Distribution Sources

'()*(+, Electrical Distribution )


3/16

Session Introduction "o i-#art basic idea about ty#ical

Electrical distribution in any industry

.&at is P ( !/

Protections in P ( !0

1ow any drives run t&roug& P (!/

'()*(+, Electrical Distribution 2


4/16

POWER DISTRIBUTION SYSTEM

'()*(+, Electrical Distribution *


5/16

Diferent Voltae !e"els +2) KV 3 "y#ically !ain Substations

++ KV 3 Area Substations 4 drives

505 KV3 1ig& load drives

202 KV3 1ig& load drives

5'6 V 3 !ediu- Voltage 7Not so used in India8

*+, V 3 2 P&ase L" 7Low "ension8 Voltage )*6 V 3 + P&ase L" Voltage 7Do-estic8

++6 V 3 L" ontrol ( D su##ly voltage

'()*(+, Electrical Distribution ,


6/16

Diferent Voltae !e"els # Brea$ers

+2) KV 3 S95 ircuit Brea:ers

++ KV 3 VBs

505 KV3 VBs

202 KV3 VBs

5'6 V 3 ABBs ( ABs

*+, V 3 AB(!B(!B 7Based on a-#s8 )*6 V 3 !B ( S9;s

++6 V 3 !B ( S9;s

'()*(+, Electrical Distribution 5


7/16

P%% # Introduction

P < Power ontrol entre

Also called P! 7Power 4 !otor ontrol

entre8 Acts as t&e -ain source $or sub

distribution boards

"y#ically rated in +666s o$ A-#eres "y#ical #arts are Inco-ers= Bus=

%utgoing 9eeders and Bus ou#lers

'()*(+, Electrical Distribution >


8/16

P%% & T'(ical S!D

1"

Inco-er Section

%utgoing 9eeders

'()*(+, Electrical Distribution ?

Busou#ler


9/16

P%% & Inco)ers

Incomers < A ty#ical brea:er $eederw&ic& $eeds #ower to t&e Bus section0

"y#ically designed as #er total connectedloads and rated -uc& &ig&er t&an %utgoingbrea:ers0

Protected against %ver3voltage= ti-ed %ver3

urrent= instantaneous %= Eart& 9aults0 Also interloc:ed wit& "rans$or-er #rotections

li:e Buc&&ol@ relay= .inding and oilte-#eratures= etc0

'()*(+, Electrical Distribution '


10/16

P%% & Bus

Bus < A conductive rods ty#icallyAlu-iniu- w&ic& carries #ower $ro-Inco-ers and distributes #ower to%utgoing brea:ers t&roug& ta##ings0

Design o$ onductor si@es are basedon t&e $ault level calculations $or all

sections and generally rated $orinco-er ca#acity

'()*(+, Electrical Distribution +6


11/16

P%% & Outoin *eeders

Outgong !ee"ers < A $eeder w&eret&e loads are connected in P0 Loadscan be ! Inco-ers= PDB Inco-ers=

!otors= etc0

"y#ically designed ( selected as #er loadconnected to t&e $eeder0

"y#ical #rotection includes #rotection o$load and #ower cable li:e %vercurrent=S&ort ircuit and Eart& $aults0

'()*(+, Electrical Distribution ++


12/16

P%% & Section + Bus

%ou(ler Secton < An Inco-er along wit& aBus connected to -ulti#le outgoing$eeders toget&er called as a Section0

"wo diferent sections are connectedtoget&er by a Bus Cou#$er%

Additional care is to be ta:en w&ilewor:ing on Bus cou#lers as t&ere isalways a c&ance o$ #ower at least onone side o$ t&e Bus cou#ler0

'()*(+, Electrical Distribution +)


13/16

P%% & ,o- t.e /eeder

o(erates


TN

C

L RRem

Cmd

MasterTrip

TSR

Breaker

AuxLogic

I/Ls

CC

110V

C

TN

C

L R

RemTrip

MasterTrip

TSR

Breaker

Aux!t"er

Trip I/Ls

TC

110V

C


14/16

M%% # Introduction

! < !otor ontrol entre

Secondary distribution arrange-ents w&ic&are s#ecically -eant to cater -otor loads0

"y#ically rated in K. 7u#to '6 K.80

Si-ilar to P but relatively lower ratedswitc&gears and &ence s-aller $eeder si@es0

Also &as Inco-ers= Bus= 9eeders and Busou#lers0

Protects -otor and cable against %L= S and E9s0

'()*(+, Electrical Distribution +*


15/16

M%% & ,o- t.e /eeder

o(erates

'()*(+, Electrical Distribution +,

M

#$

S%& /

M'CB

'o(er

Co)tactor

T"erma*

!/L e+ice

# '"ase

AC supp*,

Start

Cmd

L R

110V

AC

Aux-

co)tact

Stop

cmd .S

!/L e+ice

Start/Stop

Re*a,

!t"er I/Ls

'o(er

Co)tactor


16/16

Ot.er Distri0ution

Sources !DB < !ain Distribution Boards Distribution arrange-ents to cater

t&e need o$ #ower su##lies0 "y#ically rated in +66s o$ A-#eres0

ontains #rotection against %verload=

S&ort circuits and Eart& $aults0 9eeds #ower to SDBs 7Sub Distribution

boards8 located at eac& areas to distribute$urt&er to individual su##ly #oints0


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Presentation - Elec Distribution