Plcc System

7/26/2019 Plcc System

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POWER GRID CORPORATION OF INDIA LTDPOWER GRID CORPORATION OF INDIA LTD SRTS-I , SECUNDERABADSRTS-I , SECUNDERABAD


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TYPES OF COMMUNICATIONS

VHF WIRELESS COMMUNICATION 100 300 MHZ

LEASED P&T LINES

POWERLINE CARRIER COMMUNICATION 30-500 KHZ

MICROWAVE COMMUNICATION 800 MHZ 4 GHZ

SATELITE COMMUNICATION MORE THAN 4 GHZ

OPTICLE FIRE COMMUNICATION


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APPLICATIONS IN POWERS!STEMS

SPEECH TELE PROTECTION

TELE METERING

TELE SIGNALLING TELE CONTROL

TELE PRINTING

WIDE AREA NETWORKING


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COMMUNICATION

IN PLCC EHV POWER LINE IS USED FOR

POWERS!STEM COMMUNICATIONS THE PLCC HF SIGNALS "30-500KHZ# IS

COUPLED TO THE EHV POWER LINE THROUGHCOUPLING CAPCITOR

IT IS USED FOR SPEECH AND DATATRANSFERING

IT IS ALSO USED FOR THE LINE PROTECTION HIGHL! RELIALE COMMUNICATION S!STEM MAINTENANCE FREE LESS INSTALLALTION COST NO RUNNING E$PENDITURE


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PLCC

CAPCITOR VOLTAGE TRANSFORMER

WAVE TRAP

LINE MATCHING UNIT

ALANCING TRANSORMER

3 ELEMENT PROTECTION DEVICE DRAINAGE COIL

LIGHTNING ARRESTOR

EARTH SWITCH COA$IAL CALE

EHV TRANSMISSION LINE


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INDOOR EQUIPMENT OF PLCC

PLCC PANEL ABB-ETI 21, BPL-9505,WS-WSP100 &

PUNCOM

PROTECTION COUPLER

NSD60 & NSD61 OF ABB, 6710 OF BPL DATA MODEM

NS!,NS" & NS5 OF ABB

TELEPHONE E$CHANGE EPA#-200$! & MD#50 OF BPL

E$PRESS TELEPHONE FOR POINT TO POINTCOMMUNICATION


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MET%ODS OF PLCCCOUPLING

THERE ARE DIFFERENT T!PES OF PLCCCOUPLING S!STEMS

PHASE TO GROUND COUPLING

PHASE TO PHASE COUPLING

LINE TO LINE COUPLING INSULATED GROUND WIRE COUPLING

INTRA UNDLE COUPLING

POWERGRID IS ADOPTING MAINL! PHASE TOPHASE COUPLING FOR ALL THE LINES


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P%ASE TO P%ASE COUPLING


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BASICS OF TELEP%ONY

T!PES OF SPEECH

SIMPLE$ - ONL! ONE FRE%ENC! FOR T$ & R$ DUPLE$ - SEPARATE FRE%UENCIES FOR T$ & R$

T!PES OF S!STEMS 4 WIRE - WIRES FOR T$ "MOUTHPIECE# & WIRES FOR R$

"EARPIECE#

WIRE - ONL! WIRES FOR T$ & R$ WITH H!RID 4 WIRE E&M - WIRES FOR T$ & WIRES FOR R$ PLUS ONE

FOR SIGNELLING IN "E# AND ONE WIRE FOR SIGNELLING OUT"M#

WIRE E&M - ONL! WIRES FOR T$ & R$ PLUS ONE FORSIGNELLING IN "E# AND ONE WIRE FOR SIGNELLING

T!PES OF DIALING PULSE - NORMAL ON'OFF DIALLING TONE - DUEL MULTI FRE%UENC! DIALING "DTMF#


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TELEP%ONE


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BASICS OF COMMUNICATION

MULTIPLU$ING

TIME MULTIPLU$ING THE AVILALE CHANNEL IS SHARED TO MAN! ! SWITCHING

ONE ! ONE FRE%UENC! MULTIPLU$ING

THE AVILALE CHANNEL IS SERVED TO MAN! ! MODULATINGTHE INPUT SIGNALS WITH DIFFERENT FRE%UENCIES

MODULATION AMPLITUDE MODULATION

THE AMPLITUDE OF THE CARRIER IS CHANGED WITH SIGNALUNDER MODULATION

FRE%UENC! MODULATION THE FRE%UENC! OF THE CARRIER IS CHANGED WITH SIGNAL

UNDER MODULATION PHASE MODULATION

THE PHASE ANGLE OF THE CARRIER IS CHANGED WITH SIGNALUNDER MODULATION


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PLCC PANELS

IN PLCC PANEL THE VOICE( TELEMETERING '

TELE PROTECTION SIGNALS WILL E IN THERANGE OF 0-4 KHZ

WORLDWIDE THE ALLOCATED FRE%UENC!

AND FOR PLCC IS 30-500 KHZ IN POWERGRID EACH LINE IS HAVING 3 PLCC

PANELS ONE FOR SPEECH & DATA

TWO FOR SPEECH & TELE PROTECTION

IN POWERGRID A(PL(WS(PUNCOM MAKEPLCC PANELS ARE AVIALALE


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PLCC PANEL ETI

ETI 1 IS A MODEL NAME OF A MAKESINGLE CHANNEL AF MULTIPLU$ER

IN POWER GRID MA)ORIT! PLCC PANELS AREETI-1

ETI 1 CAN E 0W OR 40W 0W SET WILL HAVE 3 TIERS

P*EA(P*E & P*EG

40 W SET WILL HAVE 4 TIERS P*EA(P*ES (P*E & P*EG

ETI IS A A MAKE TWIN CHANNEL AFMULTIPLU$ER & RAREL! USED IN POWERGRID


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MODULE LA!OUT OF ETI-1 "0W#


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FEATURES OF ETI-21

CARRIER SUPPRESED LOWER SIDE AND S!STE TWO LEVEL MODULATION ' DEMODULATION

IF WITH 1+ KHZ CARRIER RF WITH T$,1+KHZ ' R$,1+KHZ CARRIER

FRE%UENC! DISTRIUTION SPEECH "0-KHZ# DATA'PROTECTION "-34KHZ# PILOT "3+31 KHZ# ' DIALING "3581#

S!NCHRONISATION ! AU$ILAR! CARRIER"1+KHZ#

NET WORKING WITH UILT IN COMPANDERCONTROL CARD


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ETI-21 BLOC DIAGRAM


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INPUTS & OUTPUTS OF ETI-21

SPEECH

4W E&M WITH COMPANDER CONTROL WITH E$CHANGE W E&M FOR E$PRESS TELEPHONES WITH WINT CARD INPUT LEVEL IS 0. AT +00 OHMS IMPEDANCE INPUT AND OUPUT IS THROUGH O3EE CARD

DATA 50 AUD CHANNELS OF 5 NOS OR 00 AUD CHANNELS

NOS OR +00 AUD CHANNELS OF 1 NO INPUT IS IN 03EA CARD AND OUPUT IS IN 03EH CARD

PROTECTION +00 AUD CHANNEL WITH O. LEVEL INPUT IS IN 03EA CARD AND OUPUT IS IN 03EH CARD

RF INPUT'OUTPUT COA$IAL CALE OF IMPEDENCE *5 OHMS' 15 OHMS '150

OHMS


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TELEPROTECTION

Protection of a circuit, the ends of which are

geographically separate like Lines and Cables in

which co-operation is obtained between the two

relaying points by the transmission of informationover the Distance by Telecommunication Technique


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TELEPROTECTION

T/ 2 6 7-9:;

1$ P'() *+'./(+

2$ D/('*) .+)*/+ P)./((/3)4B+*/8

!$ D/.)* T.//

T/ 9/;:?@ 9


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TELEPROTECTION


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THANK YOUTHANK YOU

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Plcc System