Communication 12082011

7/28/2019 Communication 12082011

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WESTERN REGIONAL LOAD DESPATCH CENTER

MUMBAI

SCADA - Communication

Abhimanyu Gartia

DY GENERAL Manager


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COMMUNICATIONCOMMUNICATION

REQUIREMENTS FOR SCADAREQUIREMENTS FOR SCADA

Communication media should have:Communication media should have:* High Reliability* High Reliability

* High Availability* High Availability

* Rapid Response* Rapid Response

* Transparency* Transparency

* Economy* Economy* Flexibility* Flexibility

* Maintainability* Maintainability


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Load Despatching Facilities in India

SLDC AP

WRLDC

NLDC Main

NRLDC

Sub LDC C Sub LDC W

VSAT Commn

PG FO Comn

Sub LDC V

NLDC Backup

SRLDC ERLDC NERLDC

SLDC KAR SLDC AS SLDC TR

10 Sec

2 Sec

2Sec

10 Sec

New DelhiKatwariasarai

KalcuttaGolf Course Road

ULDC Commn

RTU C RTU X

RTU ARTU X

KPTCL ABB

RTU A

31 SLDCs, 5 RLDCs, 1+1 NLDC

Wideband speech and data communication

Common database in SLDC/RLDC


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Complete SolutionComplete Solution

WS

Historian

InternetInternet

Firewall

Corporate LAN

DMS/SCADAOther

Systems

Router/Firewall

IndustrialDefender Guard

PERIMETERPROTECTION

IndustrialDefenderConsole

MONITORING,REPORTING, DATAGATHERING AND DATAARCHIVING FROM EVERYSECURITY SYSTEMCOMPONENT

IndustrialDefenderNIDS

IndustrialDefenderHIDS/RHIDSRemote

HMI

Test/QA

HOST SECURITY ANDPERFORMANCEMONITORING

Security AuditSystem DesignInstallationCommissioningLife Cycle Support

NETWORKSECURITY ANDPERFORMANCE

MONITORING

(Industrial IDSRules)


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Secure Access to ElectricalSecure Access to Electrical

SubstationsSubstations


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POSSIBLE COMMUNICATIONPOSSIBLE COMMUNICATION

Data on different ProtocolData on different Protocol IEC 60870IEC 60870--55--101101 IEC 60870IEC 60870--55--104104

IEC 61850IEC 61850

ModbusModbus

OPC serverOPC server IT interfaceIT interface

SchedulingScheduling

Data wear housingData wear housing

Web interfaceWeb interface

PMU interfacePMU interface


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Complete SolutionComplete Solution

WS

Historian

InternetInternet

Firewall

Corporate LAN

DMS/SCADAOther

Systems

Router/Firewall

IndustrialDefender Guard

PERIMETERPROTECTION

IndustrialDefenderConsole

MONITORING,REPORTING, DATAGATHERING AND DATAARCHIVING FROM EVERYSECURITY SYSTEMCOMPONENT

IndustrialDefenderNIDS

IndustrialDefenderHIDS/RHIDSRemote

HMI

Test/QA

HOST SECURITY ANDPERFORMANCEMONITORING

Security AuditSystem DesignInstallationCommissioningLife Cycle Support

NETWORKSECURITY ANDPERFORMANCE

MONITORING

(Industrial IDSRules)


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Secure Access to ElectricalSecure Access to Electrical

SubstationsSubstations


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Scan CyclesScan Cycles

All the analog data are scanned every 10/12All the analog data are scanned every 10/12

secondsseconds

Status information are reported by exceptionStatus information are reported by exceptionAll status information are scanned for integrityAll status information are scanned for integrity

check every 10 minutescheck every 10 minutes

The SOE datas are time stamped at 1 msThe SOE datas are time stamped at 1 ms

resolutionresolution

Time synchronisation is done every 10Time synchronisation is done every 10minutesminutes


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Modes of CommunicationModes of Communication

PLCCPLCC Leased Telephone circuitsLeased Telephone circuits

Microwave CommunicationMicrowave Communication Fibre Optics CommunicationFibre Optics Communication

Satellite CommunicationSatellite Communication


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PLCCPLCC High voltage lines themselves are used as communicationHigh voltage lines themselves are used as communication

links.links.

Carrier Frequency: 50Carrier Frequency: 50--300 KHz.300 KHz.

3 channels are used generally:3 channels are used generally:MainMain--ChannelChannel -->>

speech channelspeech channel 300 Hz to 2000 Hz300 Hz to 2000 Hz

TelemetringTelemetring-- 2000 Hz to 3400 Hz2000 Hz to 3400 Hz

ProtectionProtection

--ChannelChannel

--II

-->>

speech channelspeech channel 300 Hz to 2000 Hz300 Hz to 2000 Hz

TeleprotectionTeleprotection-- 2000 Hz to 3400 Hz2000 Hz to 3400 Hz

ProtectionProtection--ChannelChannel--II (BackupII (Backup--Protection)Protection)-->>speech channelspeech channel 300 Hz to 2000 Hz300 Hz to 2000 Hz

TeleprotectionTeleprotection-- 2000 Hz to 3400 Hz2000 Hz to 3400 Hz


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PLCCPLCCAdvantages:Advantages:

1.1. High reliabilityHigh reliability

2.2. All channels are available for dedicated use byAll channels are available for dedicated use by

powerpower--utility aloneutility alone

Disadvantages:Disadvantages:

1.1. Cost of insulating communication equipment is highCost of insulating communication equipment is high2.2. High noise level due to CoronaHigh noise level due to Corona

3.3. High speed dataHigh speed data--transfer not possible because oftransfer not possible because of

Bandwidth limitations.Bandwidth limitations.


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Applications of PLCCApplications of PLCCVoice CommunicationVoice Communication

Fascimile TransmissionFascimile Transmission TeleTele--ProtectionProtection

TeleTele--MeteringMetering


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Types of CouplingsTypes of Couplings

3 coupling schemes to couple voice, fax,3 coupling schemes to couple voice, fax,teletele--protection and teleprotection and tele--metering to themetering to the

highhigh--voltage transmission line:voltage transmission line:

PhasePhase--toto--Ground CouplingGround Coupling

PhasePhase--toto--Phase CouplingPhase Coupling

InterInter--Line CouplingLine Coupling


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STATION-B

PLCC PANELS

STATION-A

LMU

ESLADC

CC

WT

PLCC PANELS

ESLADC

CC

WT

PHASE-TO-GROUND COUPLING

ES=Earth Switch DC=Drainage Coil WT=Wave TrapLA=Lightening Arrester LMU=Line Matching Unit CC=Coupling capacitor


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STATION-B

PLCC PANELS

STATION-A

LMU

ESLADC

CC

WT

PLCC PANELS

ESLADC

CC

WT

PHASE-TO-PHASE COUPLING

ES=Earth Switch DC=Drainage Coil WT=Wave Trap

LA=Lightening Arrester LMU=Line Matching Unit CC=Couplingcapacitor

BT=Balancing Transformer

WT

LMU

BT BT

LMU LMU

CC

WT

CC


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STATION-B

PLCC PANELS

STATION-A

LMU

ESLADC

CC

WT

PLCC PANELS

ESLADC

CC

WT

INTER-LINE COUPLING

ES=Earth Switch DC=Drainage Coil WT=Wave Trap

LA=Lightening Arrester LMU=Line Matching Unit CC=Coupling capacitor BT=Balancing

LMU

BT BT

LMU LMU

CCCC


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Microwave CommunicationMicrowave Communication

LineLine--ofof--sight communicationsight communication Requires repeaters at 50Requires repeaters at 50--60 kms. Intervals60 kms. Intervals

Provides sufficient bandwidth to meet the needs ofProvides sufficient bandwidth to meet the needs ofpower utilitypower utility

Higher availability than PLCC, availablity not affected byHigher availability than PLCC, availablity not affected bymaintenance or faults on the power linesmaintenance or faults on the power lines

Suffers from multipathSuffers from multipath--fading effectfading effect

In India, WPC (wireless planning & coIn India, WPC (wireless planning & co--ordination) wingordination) winghas assigned 2.3has assigned 2.3--2.5 GHz and 2.82.5 GHz and 2.8--5 GHz bands to power5 GHz bands to powersector usage.sector usage.


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Digital Microwave Systems


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Leased Telephone CircuitsLeased Telephone CircuitsSimple solution, no need to develop own

dedicated communication facility bypower utility

Availability of this mode ofcommunication at remotely locatedsubstations is the deciding factor


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FiberFiber

--Optic CommunicationOptic Communication

FiberFiber--optic communication is a method of transmitting information fromoptic communication is a method of transmitting information from

one place to another by sending light through an optical fiber.one place to another by sending light through an optical fiber. The lightThe light

forms an electromagnetic carrier wave that is modulated to carryforms an electromagnetic carrier wave that is modulated to carry

informationinformation

The process of communicating using fiber-optics involves the following basicsteps:

Creating the optical signal using a transmitter

Relaying the signal along the fiber, ensuring that the signal does not

become too distorted or weakReceiving the optical signal and converting it into an electrical signal

Analog/DigitalInterface

Voltage toCurrentconverter

LightSource

Source toFiber

Interface

Fiber toLight

Detector

Interface

LightDetector

Current toVoltage

converter

Analog/DigitalInterface

OUTPUT

INPUT

Optical Fiber


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Fiber Optic CommunicationFiber Optic Communication Advantages:Advantages:

The ability to carry much more information and deliver it wiThe ability to carry much more information and deliver it with greater fidelityth greater fidelitythan either copper wire or coaxial cable.than either copper wire or coaxial cable.

Fiber optic cable can support much higher data rates, and aFiber optic cable can support much higher data rates, and at greater distancest greater distances

The fiber is totally immune to virtually all kinds of interferenThe fiber is totally immune to virtually all kinds of interference, includingce, includinglightning, and will not conduct electricity. It can therefore colightning, and will not conduct electricity. It can therefore come in directme in direct

contact with high voltage electrical equipment and power lines.contact with high voltage electrical equipment and power lines.

POWERGRIDPOWERGRID uses overhead fiber optic communication:uses overhead fiber optic communication:

OPGWOPGW (optical ground wire cable)(optical ground wire cable)ADSSADSS (all dielectric self supporting cable)(all dielectric self supporting cable)

WRAP AROUNDWRAP AROUND


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Fibre Optic Systems


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OPGW

FODP OLTE

ADD DROP MUX2 MB/S

MICROWAVE RADIO

TERMINAL

2 MB/S

INTEGRATION OF DIGITAL & ANALOG

NETWORKS

PLCC

VOICE

CARD

DATA

CARD


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OPGWOPGW OPGW (optical ground wire) replacesOPGW (optical ground wire) replaces

shield wiresshield wires Provides lightning protectionProvides lightning protection

Provides communicationProvides communication

Lightning short circuit damageLightning short circuit damage

Installation requires long term outageInstallation requires long term outage

ExpensiveExpensive Superior performanceSuperior performance


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ADSS F.OADSS F.O

ADSS (all dielectric self supporting) whichADSS (all dielectric self supporting) whichis mounted at various locations, typically 3is mounted at various locations, typically 3

to 10 meters below the phase conductorsto 10 meters below the phase conductors..

ADSS costs less than OPGWADSS costs less than OPGW

Higher fiber count than Wrap type.Higher fiber count than Wrap type.

Can be installed on towers not designedCan be installed on towers not designed

for shield wires.for shield wires.

Suitable for hot line installationSuitable for hot line installation


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WRAP AROUND F.OWRAP AROUND F.O

WrapWrap--type which is wound aroundtype which is wound aroundshield wires and, in some instances,shield wires and, in some instances,around energized conductorsaround energized conductors

HotHot--line installation is difficultline installation is difficult Cost more than ADSS, but less thanCost more than ADSS, but less than

OPGWOPGW

Need a shield wireNeed a shield wire

No operation problem is observedNo operation problem is observed


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OPGW

WRAP

ADSS

OVERHEAD CABLES FOROVERHEAD CABLES FOR

POWER UTILITIESPOWER UTILITIES


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OPGW ADSS WRAP AROUND

AL STRAND

AL COATED STEEL STRAND

AL TUBE

XLPE SHEATH

POLYESTER TAPE

MOISTURE BLOCKING COMPOUND

AERIAL OPTICAL FIBRE CABLES

FIBRE

STRENGTH MEMBERS

LOOSE TUBE

AD\AS\RKG\JP\FIBCROSS


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FIBRE OPTIC CABLE INSTALLATION

OPGW

WRAP AROUND

ADSS

AD\AS\RKG\JP\FIBINST


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SATELLITE COMMUNICATIONSATELLITE COMMUNICATION

A geostationary satellite isA geostationary satellite is

used as an active repeater.used as an active repeater.

Modulated signals are sendModulated signals are send

from earth VSATs in 6 GHzfrom earth VSATs in 6 GHz

band to the satellite.band to the satellite.

Signals are beamed back toSignals are beamed back toearth in 4 GHz band.earth in 4 GHz band.

Roundtime propagation delayRoundtime propagation delay

of 540ms existsof 540ms exists

Communication is interruptedCommunication is interrupted

during eclipses.during eclipses.


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VIJAYAWADATALLAPALLI

GAJUWAKA

VIDYUTH SOUDHA

GOOTY

SALEM400

UDUMALPETTRICHUR NORTH

MADURAI

TRICHY

SRIPERUMBUDUR

NEYVELI

CHINAKAMPALLYDAVANAGERE

RAMAGUNDAM

PONDY

SOMANAHALLI

P

N

PALLOM

KAYANKULAM

RSCC (1)

CPCC (1)

SLDC (4)

SUB-LDC / SCC (14)

FIBRE OPTIC LINK 110/132kv

FIBRE OPTIC LINK (220kv)

FIBRE OPTIC LINK (400kv)

FIBRE OPTIC LINK (SEB)

MICROWAVE LINK (35 links)

SATELLITE LINK (KEB)

RTU LOCATIONS 201

WARANGAL

PEDAPALLIDURSHED

JAMMIKUNTA

VTPS

VIZAG SWS

KAKINADA

BOMMUR

BHIMADOLE

NSAGAR PH

SRISAILAM PH

SRISAILAM LBPHKURNOOL

SOMAYAJULAPALLI

MUDDANOOR RTPP

ANANTHAPUR

SHAPURNAGAR

GHANAPUR

CH.GUTTA

HYDERABAD 400

LEGENDLEGEND

CHALAKUDI

KALAMASSERY

VIAKKAM

KUNDRAPARIPALLI

TRIVANDRUM NORTH

VYDYUTHI BHAVANAM

KOZHIKODE

KANNUR-B

MADURAI400

CHENNAI

CHIDAMBARAM

MYLADUTURAI

SALEM230

ERODE

SIVAGANGA

KARAIKUDI

THIRUMAYAMPUDUKOTTAI

THIRUVARURORTHANADU

KOVILVENNI

ADANIKOTTAI

INGUR

PONGALORE

PANRUTI

VILLIANUR

SP.KOVIL

BANGALORE

KUMBALGODI

HUBLI

APSEB

RTUS

82

TNEB

RTUS

40

KSEB

RTUS

30

KEB

RTUS

22

PONDY

RTUS

05

CENTRAL

SECTOR RTUS

22

Lingasugur


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i C i f i S C


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Sembatti

Madurai 400

Trichy 400

Paramakudi SamayapuramMadurai North

Kodayar PH2

Madurai

Sub LDC

Karaikudi

Tanjore 230

S R PudurPariyar PH

Theni Kayathar

E

Sathur

TTPS

Podukotta

C

Echengodu

Adanakottai

Peramballur

Kovilvenni

Pugalur

Thiruvarur

Tuticorin Auto

Trichy 230

Chennai

Sub-LDC

(NLC TS-I)

Erode Sub-LDC

(Erode)

Wideband Channel Routing for Madurai Sub-LDC

OrthonaduSivagangai

Existing RTU 9 nos.

Existing RTU integrated

New RTUs 13 nos.

PLCC Link

MW Link

WRTCC

WR-SC&C Communication systemSLDCGOA


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WRLDC Borivalli VavHaldarwa Jambuva

Gotri

SLDC Asoj

Itarsi

Indore

Sub-LDC

ItarsiVchalKorba

STPPRaipurBhilai-400

(SLDC)

Jabalpur-400

Asoj

WRTCC

Indore

Dhule

VindhyanchalChandrapurPhadge

Kalwa

Tarapur 1&2

Itarsi-220

Bina-400 Bhopal-400

Sub-LDC

Satna-220

Katni-220

Ja

balpur-220

SLDC-

JabalpurKorba-West

Korba-East

Kalwa

Kawas

Rajgarh

Khandwa

Sipat

Raigarh

Bhatapara

Seoni

Bhilai-220

Vadodara

POP

Gandhar

Kakrapar

Dehgam

Tarapur 3&4

Phadge

Bhadrawati

Satna

Bina

Gwalior

VapiBoiser

LEGENDSGreen - ULDC Wideband Link

BLUE - PDT Link

Black - PLCC Link

Main Data PLCC Channel

St. By Data PLCC Channel

Both Main and Std. By Data PLCC Channel

Haldarwa Jambuva Asoj

62 Nos. PLCC Equipment

109 Nos. Wideband ULDC Eqpt

MPSEB Sector

CSEB Sector

CSEB Sector

GEB Sector

WR SC&C Communication system

ILA-387

ILA-174

ILA-311

ILA-194ILA-362 ILA-702ILA-368

KR-13RaipurBVati

SEBs Wideband Equipment and OFC

OPGW

U/G OFC

GOA

Leased Link

PondaMapusa


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ChalakudyT. NorthKozhikode -BKannur-B

Kalamassery

PallomKayamkulamKundraParipallyTrivendrum

North

Vidyuthi

Bhavanam

RSCC,Bangalore

(Udumalpet)

Wideband Routing from Sub-LDC to SLDC,(Kalamassery)

COMMUNICATION NETWORK FOR KERALA

MW Link

FO Link

Documents

Communication 12082011