01 BRABB_01_Introduction to SA V1

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Introductionto the StandardIEC 61850

Klaus-Peter Brand

April 2006



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U n i v e r s i t y S w i t z e r l a n d -

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Content

IEC 61850Communication Networks and Systems in

Substations14 parts: IEC 61850-x-y © IEC : 2002-2005

IEC 61850Introduction

Scope: Substation Automation Market Needs: Interoperability

Approach: Data Model and Stack



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GERMANY

VallorcineChamoson

AiroloSils

Bonaduz Pradella

Grynau

Lavorgo

Robbia

Creux deChippis

Mathod

Wimmis

Manno

Magadino

Soazza

Innertkirchen

ITALIEN

RomanelVaux

La Bâtiaz

Vouvry

St.Triphon

Winkeln

Mühleberg

FrolooBassecourt

Flumenthal

Gerlafingen

Mettlen

Bickigen

Asphard

Laufenburg

Ormalingen

Gösgen

BeznauBreite

Benken

FRANCE

ITALY

AUSTRIA

The substation as node in the power network

SubstationAutomation

Example: Switzerland



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SA as process interface for network control

All information from process(Power System) are acquired by theSubstation Automation system*

All actions on the process (PowerSystem) are performed by theSubstation Automation System*

*) protection integral part of SA

Network

ControlCenter

Substation

Substation Automation System




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Relay

room

Location

Operatingroom

SwitchYard

(GIS orAIS)

Serial communication(Fiber optics)

Today

to other bays

GIS

CoppercablesBay cubicle

Gateway

Station bus

HMII

Sensors andActuators

Tomorrow

GIS

Bay cubicle

Serial communication(Fiber optics)

Gateway

to other bays

Station bus Process bus

HMI

Trends in Substation Automation (SA)

SCADA, distribution, metering, etc.

Coppercables

MMI, Control board

Yesterday

Copper cables

Bay cubicle

GIS

Coppercables

Event recording,Protection

Functionality: SA to control,operate,

monitor, and protect the substation




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Serial communication in SA

Stationbus

Processbus

Stationgateway

Stationcomputer

HMI

Control Protection Protection& Control

Control Protection

Process Interface Process Interface Process Interface

Station level

Bay level

Process level Switchgear/Switchyard

Cu wires




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GatewayStationsComputer

HMI

Control ProtectionProtection& Control

Control Protection


Station Level

Bay Level

Process Level Switchyard (Switchgear, Process)

Station Control to NCC

Parallel Wires(vertical)

Parallel wires

horizontal ?

IEC 61850

Vertical Communication

Examples:Commands Events

SerialverticalCommunication

„DataVacuum Cleaner“




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U n i v e r s i t y S w i t z e r l a n d - 8 -


HMI


Control Protection


Station Level

Bay Level



IEC 61850


Examples:Commands Events

SerialverticalCommunication



Examples:Samples Trips

Positions



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HMI


Control Protection


Station Level

Bay Level



IEC 61850


Serial

verticalCommunication



Serialhorizontal

Communication

Example:Blockings Releases Status

Serialvertical

Communication

IEC 61850



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HMI and related station level functionsAccess control & access security managementOperators access to the systemDisplay of data and informationStorage of data in the station computerLog management

Operational or control functionsOperational control (switching devices, …)

Indication handlingEvent (SER) and alarm handlingParameter setting and parameter set switchingData retrieval

Monitoring and metering functionsMeteringPower equipment and system monitoringDisturbance recording

Function in SA (1) – Headlines from IEC SubstationAutomation



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Local process automation functionsProtectionAutomaticsBay interlocking

Distributed automatic support functionsStation interlockingDistributed synchrocheckSynchronized switching

Automatic switching sequencesLoad shedding and restoration

System support functionsSystem supervision

Configuration managementTime synchronization (tagging of events 1 ms, phasors 1µs)

Communication

Function in SA (2) – Headlines from IEC SubstationAutomation



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Basics of Market Requirements

Substation Automation (SA) Systems with IEDs (intelligentelectronic devices) with serial communication have been now verywell accepted on the market (some 4000 systems worldwide)

Numerical devices with serial communication from different supplierscannot be combined in a system as in the old hardwired systemsbecause of a missing standard (only with an uneconomic effort)

The global, highly competitive market requests a standard for competitive performance

cost reduction

Both providers and utilities are global companies and requestsuch an integration or have to perform such integrations

MarketRequirements



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One global standard instead of proprietary ones

Protection1

Protection1

Protection2

Protection2

Station

Gateway

Central

Functions

HM I

Processinterface Processinterface Processinterface

MVB,CAN others

Protection& Control

MarketRequirements



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Details of Market Requirements

The global market

needs a global standard

means a standard supporting all design & operation philosophies

Mixing of devices

at least like with copper cables

Cost reduction

by competition

by more intelligent functions

Cost reduction

for investments

operation and maintenance

Open, future-proof standard

for safe-guarding of investments

regarding suppliers and improving technology

for future extensions by bays or functions

MarketRequirements



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Requirements for Standard in SA

Free configuration The standard shall support different philosophiesand allow a free allocation of functions e.g. it must

work equally well for centralized (RTU like) ordecentralized (SCS like) systems.

Interoperability The ability for IED’s from one or severalmanufacturer to exchange information and usethe information for the their own functions.

Long term stability The standard shall be future proof, i.e.

it must be able to follow the progress incommunication technology as well asevolving system requirements.

MarketRequirements



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Device (IED) Device (IED)

Elements of Substation Automation

Functions Functions

Architecture

Connections

Data Communication

What shall be standardized?

IEC 61850Approach



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What shall be standardized?

• Physical Connections ?

• Physical Devices ?

• Functions ?

• Data ?

• Communication

procedures ?

• Plugs !

• Development !

• Competition !

• Data exchange !

• Data exchange !

IEC 61850Approach



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Split in Data Model and Stack

Communication

Technology:How are the datacommunicated ?

Domain

Substation :What datahave to becommunicated ?

Slowchanges

Fastchanges

ISO/OSI

Stack

DataModel

DEFINITIONData and Servicesaccording to theDomain Substation

SELECTION

ISO/OSI Stack

from theMain Stream

C o m m

u n i c a t i o n

MAPPINGData Modelto the

CommunicationStack

IEC 61850Approach



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IEC 61850

Communication Networks and

Systems in Substations

14 parts: IEC 61850-x-y © IEC : 2002-2005

The standard IEC 61850IEC 61850

Result



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Structure of IEC 61850 (14 parts)

Mapping to real Comm. Networks (SCSM)

Part 8-1: Mapping to MMS and toISO/IEC 8802-3

Part 9-1: Sampled Values over SerialUnidirectionalMultidrop Point-to-Point link

Part 9-2: Sampled values over ISO 8802-3

Part 7-2: Abstract Communication Services (ACSI)Part 7-1: Principles and Models

Abstract Communication Services

Part 7-4: Compatible Logical Node Classesand Data Classes

Part 7-3: Common Data Classes

Data Models

Part 1: Introduction andOverview

System Aspects

Part 2: Glossary

Part 3: General RequirementsPart 4: System and Project

Management

Part 5: Comm. Requirements

for Functions andDevice Models

Configuration

Part 6: Configuration descriptionLanguage for Communicationin electrical Substations related

IEDs

Part 10: Conformance Testing

Testing

IEC 61850Result

Documents

01 BRABB_01_Introduction to SA V1