uca group iec61850

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2001 UCATM Users Group CUA1

IEC61850


IEC 61850 - Background

Substation LAN Communications results of 3 work item proposals

jointly developed by task forces

spanning 3 working groups Work derived from combining CIGRE

and UCA submissions

Mostly backward compatible withUCA

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IEC61850: TC57 WG10 Scope

Bay Unit

Control

Metering

Disturbance Recorder

Misc. Functions

Level 1

Protection

TC95

Protection

Disturbance

Recorder

TC95TC57

Station UnitTC57

Level 2

Level 0Instrumental

Transformers

Switchgear &

Transformer

TC14,17TC38

Instrumental

Transformers

Switchgear &

Transformer

TC14,17TC38

Remote Control (NCC) Technical Services

6 1

4 5 4 5

7

3 2



Bay Unit

Control

Metering


Misc. Functions

Level 1

Protection

TC95

Protection

Disturbance

RecorderTC95TC57

Station UnitTC57

Level 2

Level 0Instrumental

Transformers

Switchgear &

Transformer

TC14,17TC38

Instrumental

Transformers

Switchgear &

Transformer

TC14,17TC38


6 1

4 5 4 5

7

3 2

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Bay Unit

Control

Metering


Misc. Functions

Level 1

Protection

TC95

Protection

Disturbance

Recorder

TC95TC57

Station UnitTC57

Level 2

Level 0Instrumental

Transformers

Switchgear &

Transformer

TC14,17TC38

Instrumental

Transformers

Switchgear &

Transformer

TC14,17TC38


6 1

4 5 4 5

7

3 2


TC57 Reference Model

Substation FieldDevices

ControlCenter

Meters

61850(WG10-12)

61334(WG09)

60870-5(WG03)

60870-6(TASE.1)

60870-6(TASE.2)

ANSIC12(US)

62056(TC13)

SCADAInter-CC

Data LinksEMS Apps DMS Apps

Customer

Interface

61970 Component Interface Specifications

(CIS - WG 13)

61968

(SIDMS - WG 14)

61970/61968 Common Information Model (CIM - WG 13, 14)

Inter-Application Messaging

API

Apps

Remotes

Tele-Control

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IEC 61850 Document Parts

1: Introduction and Overview

2: Glossary

3: General Requirements

4: System and Project Management

5: Communication Requirements for

Functions and Device Models6: Configuration Language for

Substation IEDs



7: Basic Communication Structure

for Substation and Feeder Equipment

7-1: Principles and Models

7-2: Abstract Communication ServiceInterface (ACSI)

7-3: Data Types for Data Object Classes

7-4: Compatible Data Types

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8: Specific Communications Mapping(SCSM)

8-1: Mapping to MMS over ISO 8802-3

9: Specific Communications Mapping

9-1: Mapping to Point-Point with ISO 8802-3

9-2: ACSI Mapping to ISO 8802-3 based

Process Bus

10: Conformance Testing


Part 5: Requirements

Defines data flow decomposition of

substation, organized on 3 levels

Defines information requirementsand definitions

Used to develop detailed object

model

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Functions - tasks performed by

substation automation system

eg: busbar protection, interlocking,

alarm management

Devices - equipment designed to

perform part of a function eg: breaker, relay, substation computer



Logical Node - the smallest part of a

function that exchanges data

PICOM - Piece of Information for

COMunication: data exchanged

between logical nodes

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Levels and Log ical Interfaces


1,6 1,6

4 5 4 5

7

8Prot Contr

Fcn A Fcn BStation

Level

Bay/Unit

Level

Process

Level

Prot Contr

Sensors & ActuatorsProcess Interface

HV Equipment

3 3

9


Part 6: Con figurat ion Language

File format for describing

configurations

parameters

communications configuration

connections

Used to exchange data between

engineering tools

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Part 7: Commun ication

Structure

Reference model for communication

Abstract Service definition

Common Data Classes

Logical Node and Data Classes


IEC 61850 Reference Model

Abstract Communication

Service Interface (ACSI)

Application Process

SCSM 1 SCSM 1 SCSM 1

Stack 1

Stack 1Stack 1

Common

Applications

Specific

Communication

Stacks

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Abstract Services

Abstract Services isolate object

models from communication

specifics

Common utility services can be

mapped to many protocols

Future proofing - allows adoption offuture technologies


Abstract Services

Defines services and parameters

Defines how to build logical devices

out of logical nodes

Defines how to organize data objects

derived from logical nodes

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Abstract Service Models

Server

Association

Logical Device

Logical Node

Data Object

Data Set GOOSE Model

Reporting andLogging

Control Model

Substitution Model

Sampled Values

Time Synch File Transfer


ACSI Models

Time Synchronization File TransferAssociation

Server

Logical Device

Sampled

Values

GOOSE

Logical Node

Control

Substitution

Reporting

& LoggingData

Object

Data

Set

Settings

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Data Objects

Represent data within a logical node

voltage, current, relay settings. etc.

Aggregate attributes of defined types

measurements, status, controls,

configuration, etc.

have independent access control have standardized names, types


Data Sets

Comprised of references to data

objects, accessed with a single name May be predefined or dynamic

may be interrogated by client

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Control Model

Applies to object types:

Controllable Single and Double points

Binary and Analog Controlled StepPosition

Analog Set Point

Immediate and Time Activated


Direct Contro lNormal Secu ri ty

Oper_req

Oper_res

Client Server

Act ion performed

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SBO Contro l

Normal Secu ri ty

Oper_req

Oper_res

Client Server

Act ion ini t iated

Sel_req

Sel_res

Point selected


SBO Con trol,Enhanced Securi ty

Oper_req

Oper_res

Client Server

Act ion ini t iated

Sel_req

Sel_res

Point selected

CmdTerm_req

Act ion completed

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Subst i tut ion Model

Applies to status or measured data

Changes value and quality

substituted

process

Output

Process value

Substituted value

Substitute/Unsubstitute


Sett ings Group Model

Settings Groups allow for

simultaneous switching of multiple

parameters multiple copies of each parameter

exactly one copy of each is active

exactly one copy of each is editable

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Sett ings Group Model

Get, Set Req

Get, Set Res

Edit Group

Process

Logic

SG 1

SG 2

Get, Set Req

Get, Set Res

Get, Set Req

Get, Set Res

Settings

Active Group Control

Edit Group Control

Active Group


Report ing Model

Reports members of data sets

by exception, triggered by data, qualitychanges and/or freeze

periodic integrity report multiple clients, multiple data sets

Various formats of reports to

preserve bandwidth

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Report ing Model

Data, Quality,

& FreezeChange Events

Data Objects

in Data SetFormatted

ReportsFilter

&

Format

Report

Control

Get, Set Req

Get, Set Res

Parameters


Logging Model

Logs members of data sets

same triggering as Report Model

logged to circular buffer

can log multiple data sets can be retrieved by multiple clients

Retrieval by entry number or

timestamp

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Log

Object

Log Model

Data, Quality,


Data Objects

in Data Set

Filter

Log

Control

Get, Set Req

Get, Set Res

Query Req

Query Res

Parameters

Log Entries


Goose Model

Generic Object Oriented System-

wide Event

fast and reliable distribution of data

publisher sends to multiple subscribedpeers

Specialized communication mapping

to achieve performance, reliability,

and multi-peer

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Goose Model

Data, Quality,


Data Objects

in Data SetFast Reports

Format

GOOSE

Control

Get, Set Req

Get, Set Res

Parameters


Sampled Values Model

Used at Process level to retrievesynchronized samples

Used at Bay/Unit level for

Synchrocheck Samples multicast on local network

segment

Samples directed when enrolledacross network segments

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Sampled Values Model

Synchronous

Sampling

Data Objects

in Data SetPeriodic Reports

Format

SV

Control

Get, Set Req

Get, Set Res

Parameters


Common Data Classes

Defines attribute classes used by

Part 7-4 to build data objects

standard names

standard data types

classification of attribute (measurand,status, configuration)

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Measu red Value

(MV) Common Class

units SIUnits cf O

db INTEGER cf O

t TimeStamp mx M

q Quality mx M

mVal AnalogValue sv M

Name Type Char M/O


Control lable Double Point(DPC) Common Class

ctlVal BOOLEAN st M

pulseConfig PulseConfig cf O

ctlVal BOOLEAN st MstVal ENUMERATED st M

ctlVal BOOLEAN co O

Name Type Char M/O

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Logical Nodes & Data Objects

Data Objects constructed from

Common Data Classes

Logical Nodes constructed from Data

Objects


Sample Circuit B reaker

Logical Node:XCBR

BlkClose : SPC

ctlVal

stVal

t

q

BlkOpen : SPC

ctlVal

stVal

t

q

Pos : DPC

ctlVal

stVal

t

q

pulseConfig

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Examples of Logical Nodes

XCBR - Circuit Breaker

XSWI - Circuit Switch

XCTR - Current Transformer

XVTR - Voltage Transformer

XGMU - Gas Measurement Unit


Q0_L1/XCBR

Q1_L1/XSWIQ8_L1/XSWI

L1/XCTRL1/XVTR

L1/XGMU

Q0_L2/XCBR

Q0_L3/XCBR

Process Bus

Examples of Logical Nodes

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Part 8: Specif ic Comm. Service

Mapp ing (SCSM)

Currently only 8-1: Mapping to MMS

over Ethernet

very nearly the same as UCA

GOOSE and Time Sync different

Future alternate mappings planned

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