IEC61850 - scc-online.de

SCC 

IEC 61850 - 

Schwarz Consulting Company, SCC 

Dipl.-Ing. Karlheinz Schwarz 

Im Eichbaeumle 108 

76139 Karlsruhe / Germany 

Tel +49-721-684844 

Fax +49-721-679387 

Email schwarz@scc-online.de 

URL www.scc-online.de 

IEC 61850 

Communication networks and 

Madrid 

Madrid (Spain) 

(Spain) 

November 

November 

2002 

systems in Substations 

© SCC, Nov 2002; Madrid, Karlheinz Schwarz Page 1

SCC 

Current activities 

IEC 61850 

• IEC 61850 (editor of part 7-1/7-2) 

• IEC 61850 (project leader 

conformance testing - part 10) 

• Seamless Communication 

Architecture within IEC 

• IEC 61400-25 Wind Power / 

Decentralised Power Systems 


SCC 

Past activities 

• IEC 60870-6 TASE.2 (ICCP) 

• IEC Fieldbus, Profibus, ... 

IEC 61850 

• ISO 9506 MMS (Convenor ISO TC184 

SC5 WG2) 

• ... 


SCC 

Content 

IEC 61850 

• Scope and objectives of IEC 61850 

• Approach of IEC 61850 

• Content and structure of IEC 61850 

• Introduction to IEC 61850-7-2 (ACSI) 

• Communication mappings 8-x, 9-x 

• Conformance testing 

45 45 min 

30 30 min 

30 30 min 

15 15 min 


SCC 

Scope of IEC 61850 

IEC 61850 


SCC 

Scope 

Systems in substations 

IEC 61850 

Communication networks 

in substations 


SCC 

STATION LEVEL 

BAY/UNIT LEVEL 

Remote 

protection 

PROCESS LEVEL 

Remote control (NCC) 

1,6 

PROT. CONTR. 

FCT. A FCT. B 

8 

3 3 

Process Interface 

HV Equipment 

Technical Services 

CONTR. 

PROT. 

Sensors Actuators 

IEC 61850 

Remote 

protection 

© SCC, Nov 2002; Madrid, Karlheinz Schwarz Page 7 

9 

1,6 

2 2 

4,5 

10 7 

61850 

4,5 

Interfaces

SCC 

IF1 protection-data exchange between bay and station level 

IEC 61850 

IF2 protection-data exchange between bay level and remote protection 

(outside the scope of this standard) 

IF3 data exchange within bay level 

IF4 CT and VT instantaneous data exchange (especially samples) between 

process and bay level 

IF5 control-data exchange between process and bay level 

IF6 control-data exchange between bay and station level 

IF7 data exchange between substation (level) and a remote engineer's 

workplace 

IF8 direct data exchange between the bays especially for fast functions like 

interlocking 

IF9 data exchange within station level 

61850 Interfaces 

IF10 control-data exchange between substation (devices) and a remote 

control center (outside the scope of this standard) 


SCC 

 

Substation system 

Monitoring, Eng., ... 

Control 

Protection 

Measurements 

IEC 61850 


SCC 

IEC 61850 

Substation communication 

Services (abstract) 

Services (concrete) 

Transport of messages 

(TCP/IP, ..., Ethernet, ...) 


SCC 

BUT ... 

IEC 61850 

Most definitions of IEC 61850 

are applicable 

in many other application areas. 


SCC 

 

 

 

 

 

 

Application areas 

Electric Power 

Distributed Energy (Wind, 

Water, Fuel Cell, Solar, ...) 

Gas 

Water 

Waste Water 

other industries 

IEC 61850 

Report on the use of 61850 outside utilities: http://www.nettedautomation.com/news/n_45.html 


SCC 

Objectives of IEC 61850 

IEC 61850 


SCC 

IEC 61850 

Current sampled value architecture 

hardwired 

signals 

Protection 

devices 

Sensors 

CT/VT 

other 



SCC 

IEC 61850 

IEC 61850 sampled value architecture 

Protection 


1 

Ethernet 

Switch 

Sensors 

CT/VT 

networked 

signals 

other 



SCC 

IEC 61850 

Current protection architecture 

hardwired 

signals 

Protection 

device 


SCC 

IEC 61850 

IEC 61850 protection architecture 

networked 

signals 

Ethernet 

Switch 

Protection 

device 


2

SCC 

Current 

Other applications 

Control 

centers 

Monitoring 

Control 

Engineering 

IEC 61850 


5 

IEC 61850 

6 

3 

Ethernet 

Switch 

4

SCC 

BUT ... 

... we have already 

replaced wires by 

IEC 61850 

COMMUNICATION SYSTEMS ! 

YES, BUT ... 


SCC 

... You may have to many 

HM I 

DNP 

central 

Functions 

MODBUS LON 

Station 

Gateway 

IEC 61850 

Prot. 1 Prot. 2 Control Prot. 1 Prot. 2 

MVB,CAN other 

Process interface Process interface Process interface 

Source: RWE, ABB, Alstom, Siemens 

PROFIBUS 

60870-5 

-101/4 

60870-5 

-103 

FIELDBUS 


SCC 

IEC 61850 

Situation in Wind Power 

• Wind power control centre supervises 39 39 

wind turbines from 9 different suppliers. 

• With the delivery of of the turbine each supplier 

provides a disk or or CD for his own proprietary 

(hidden) communication solution. 

• 9 different programs on on different machines 

(DOS, Windows 98 98 or or NT, Unix) must be be 

started to to communicate with all all turbines. 

• Integration require costly custom datatranslation 

and data-mapping components. 

Vattenfall 

(Sweden) 


SCC 

Objectives 

IEC 61850 

ONE Std for all apps/dev in a SS 

Simplify Engineering 

Common Objects for reuse 

Reduce # of protocols 

Use mainstream Technology 


SCC 

6 

Control 

Center 

Router 

“IEC 61850 Substation” 

HMI 

Bay Relay Relay 

sampled Controller value value exchange A (1), (1), B 

fast fast exchange of of I/O I/O data data (2), (2), 

control and and trip trip signals (3), (3), 

engineering and and configuration (4), (4), 

monitoring Modern and and supervision Modern (5), (5), 

control-center Switchgear communication CT / VT(6) 

(6) 

3 

5 

3 

Ethernet 

Switch 

Bay 

Controller 

Modern 

Switchgear 

IEC 61850 

2 

Relay 

A 

other 

other devics 

other devics 

devics 

Relay 

B 

Modern 

CT / VT 


3 

5 

Engineering 

4 

1

SCC 

IEC 61850 

IEC 61850 

meets substation requirements 

scalable 

easy to add information models 

uses standard communication 


SCC 

Multi- 

IEC 61850 is ... 

part (14) 

multidisciplinary 

multifarious 

purpose 

application 

layered 

IEC 61850 


SCC 

Approach of IEC 61850 

IEC 61850 


SCC 

IEC 61850 

A new standard: For what? 

 

 

 

To enable devices from different 

manufacturers to easily communicate 

with any other device, at any location, 

at any time for monitoring, control, ... 

to easily re-use software (device 

models, APIs, ...), 

to easily integrate, engineer and 

configure devices and applications, ... 


SCC 

IEC 61850 

Change in design rules 

Design rule in the past: 

save transmission bandwidth 

... and today: 

simplify device (information) 

engineering and integration 

today: 

bandwidth 

cost 

today: 

integration 

cost 


SCC 

Design rule for IEC 61850 

IEC 61850 

Shift from the simple "wire-replacing" 

I/O data (point lists) exchange to: 

Application information models 

Advanced information exchange methods 

Internet-based communication suites 


SCC 

IEC 60870-5-103 

IEC 60870-5-101 

IEC 60870-5-104 

IEC 61850 

IEC 60870-6 

TASE.2/ICCP 

IEC 61850 

Experience taken into account 

Domain experts 




UCA® 2.0 

UCA ® trademark of EPRI (Palo Alto, USA) 


IEC 61850 

SCC Configuration knowledge 

substation 

documentation 

“Application” 

What is 

2673? 

 

Id 2673 is 

Phase A to 

ground voltage 

in kV of ... 

Measurements 

Status 

V 

A 

Status 


SCC 

Configuration info in the device 

Report 

Get.response 

Exchange: 

Get 

Report 

Log 

IEC 

IEC 

61850-7-2 

61850-7-2 

Container: 

SubMD/MMXU 

IEC 

IEC 

61850-7-4 

61850-7-4 

IEC 61850 

V 

A 

Status 

Named Information: 

PhV.phsA.cVal 

PhV.phsA.range 

PhV.phsA.q 

... 

PhV.phsA.units 

PhV.phsA.db 

PhV.phsA.smpRate 

IEC 

IEC 

61850-7-3 

61850-7-3 

some 30 30 


SCC 

IEC 61850 

Name „XCBR“ Circuit Breaker 

IEC 61850 

61850 

Semantic/ 

Meaning 

... is a Switch made of ... 

the 

real 

thing 


SCC 

Models 

IEC 61850 

90 Standard LN Models (PDIS, XCBR, ...) 

500 Standard Data (Pos, ...) 

100 Standard Data Attribute (stVal, q, ...) 

10 Standard Comm.-Service Models 


SCC 

Logical Node Models (LN) 

Logical node groups Number of 

logical nodes 

System logical nodes 2 

Protection functions 28 

Protection related functions 10 

Supervisory control 5 

Generic references 3 

Interfacing and archiving 4 

Automatic control 4 

Metering and measurement 7 

Sensors and monitoring 3 

Switchgear 2 

Instrument transformer 2 

Power transformer 4 

Further power system equipment 14 

IEC 61850 


88

SCC 

IEC 61850 

Wind Power Plant (IEC 61400-25) 

Wind power plant 

components: 

(focus) 

- - Wind turbine 

- - Wind generator 

- - Nacelle 

- - Rotor 

- - Gear 

- - Brake 

- - Yaw 

- - ... ... 

Information Models 

Drawing developed by the U.S. Department of Energy - Wind Energy Program 


SCC 

Generator: Measurands 

Generator speed 

Duty factor sent sent to to generator 

Slip Slip 

Generator current (Weier) 

Generator bearing temperature 

Generator temperature 

Generator 2 temperature 

Status information 

Thyristor opening 

Generator connected 

Heat generator (order) 

Status word from Weier 

IEC 61850 

What to define and exchange? 

Model 

Real Wind Generator 


SCC 

Logical node 

Logical Node 

Common logical node information 

information independent from the dedicated function 

represented by the LN, e.g., mode, health, name plate, 

... 


information representing either the status of the process 

or of the function allocated to the LN, e.g., switch type, 

switch operating capability, ... 

Settings 

information needed for the function of a logical node, 

e.g., first, second, and third reclose time, close pulse 

time, and reclaim time of an autoreclosing function. 

Measured values 

are analogue data measured from the process or 

calculated in the functions like currents, voltages, power, 

etc., e.g., total active power, total reactive power, 

frequency, net real energy since last reset, ... 

Controls 

are data, which are changed by commands like 

switchgear state (ON/OFF), tap changer position or 

resetable counters, e.g., position, block opening, ... 

IEC 61850 


information 


SCC 


XCBR 

Pos 

Data 

Data 

Control value “ctlVal” controllable 

Operate time 

Originator 

control 

Control number 

Status value “stVal” status value 

Quality 

Time stamp 

... 

Substit. enable 

status 

Substit. value 

... 

substitution 

Pulse configuration 

Control model 

SBO timeout 

SBO class 

... 

BlkOpn 

Data- 

Attributes 

Controls 

configuration, 

description, 

and extension 

IEC 61850 


SCC 

61850-7-2 

Services 

TCP/IP 

Network MMS 

Mapping 

SCSM, e.g. 

61850-8-1 

61850-7-4 logical 

node (circuit breaker) 

Hides/encapsulates real World 

(Virtual World) 

LN 

XCBR1 

... 

61850-6 

configuration file 

LN 

LN 

Position 

Mode 

logical device (Bay) 

61850-7-4 data 

(Position) 

IEC 61850 

virtualisation 

Real devices 

in any 

substation 

Complete 

Model 


SCC 

IEC 61850 

Sampled values (example) 

Proprietary 

Link 

Protection 

Network 

Merging 

Unit 

Bay 

Controller 

Sampled 

values 

(multicast) 


SCC 

Samples 

8/period 

Samples 

16/period 

61850-7-2 

class 

IEC 61850 

Logical Device “MergingUnit” 

LN LLN0 

SMVControl 1 

DatSetRef = 1 

SmvID = 1 

SmpRate = 8 

SMVControl 2 

DatSetRef = 1 

SmvID = 2 

SmpRate = 16 

SMVControl 

DatSetRef 

SmvID 

SmpRate 

DS1 

PhsATCTR.ARtg 

NeutTCTR.ARtg 

PhsATVTR.VRtg 

PhsATCTR.Amp 

PhsBTCTR.Amp 

PhsCTCTR.Amp 

NeutTCTR.Amp 

PhsATVTR.Vol 

PhsBTVTR.Vol 

PhsCTVTR.Vol 

NeutTVTR.Vol 

BusBTVTR.Vol 

... 

61850-7-4 

LN 

classes 

... 

LN PhsATVTR 

Vol 

VRtg 

LN PhsBTVTR 

Vol 

VRtg 

LN PhsCTVTR 

Vol 

VRtg 

LN NeutTVTR 

Vol 

VRtg 

LN BusBTVTR 

Vol 

VRtg 

LN TVTR 

Volts 

VRtg 

LN PhsATCTR 

Amp 

ARtg 

LN PhsBTCTR 

Amp 

ARtg 

LN PhsCTCTR 

Amp 

ARtg 

LN NeutTCTR 

Amp 

ARtg 

Instantiate to „Neutral“ TCTR 

LN TCTR 

Amps 

ARtg 


Voltage 

Current

SCC 

monitoring and 

supervision (5) 

engineering and 

configuration (4) 

IEC 61850 Approach 

control and 

trip signals (3) 

ONE Data Model 

- measurements 

- status 

- protection 

- control 

- engineering 

- ... 

... many services 

IEC 61850 

control-center 

communication (6) 

fast exchange 

of I/O data (2) 

sampled value 

exchange (1) 


SCC 

IEC 61850 

Content and structure of IEC 61850 


SCC 

Logical Nodes & 

Data 

Service 

“Interface” 

Communication 

profiles 

Data 

Values 

TCP/IP 

Network 

Data 

Values 

IEC 61850 “Layering” 

Information 


(61850-7-4 / -7-3) 

Information 

Exchange 

(61850-7-2) 

Mapping to e.g. 

MMS and 

TCP/IP/Ethernet 

(IEC 61850-8-1, 

-9-1, 9-2) 

2000+ 2000+ items items 

(name (name tagged tagged 

information) 

information) 

publ./subscr., publ./subscr., get, get, 

set, set, control, control, ... ... 

reporting, reporting, logging logging 

Ethernet, Ethernet, 

TCP/IP, TCP/IP, ... ... 

IEC 61850 

Configuration 

file 

according 

to 61850-6 


SCC 

IEC 61850 

System Aspects 

Part 1: Introduction and Overview 

Part 2: Glossary 

Part 3: General Requirements 

Part 4: System and Project Management 

Part 5: Communication Requirements for Functions and Device Models 

Parts of IEC 61850 

Configuration 

Part 6: Configuration Language for electrical Substation IEDs 

Modelling Introduction 

Part 7-1: Principles and Models 

Information Models 

Part 7-4: Compatible Logical Node Classes and Data Classes 

Part 7-3: Common Data Classes 

Information Exchange Methods 

Part 7-2: Abstract Communication Service Interface (ACSI) 

Mapping to real specific Communication Networks (SCSM) 

Part 8-1: Mapping to MMS and ISO/IEC 8802-3 (Ethernet) 

Part 9-1: Sampled values over serial unidir. multidrop point to point link (802.3) 

Part 9-2: Sampled values over ISO/IEC 8802-3 (Ethernet) 

Testing 

Part 10: Conformance Testing 


SCC 

IEC 61850 

Reuse of (and additions to) IEC 61850 

Substations and 

Feeder Applications 

Logical Nodes & 

Data Classes 

(current 7-4) 

reuse 

reuse 

XYZ 

Wind Power 

XYZ 

Plants 

(IEC TC 88*) 

additional 

LNs and Data 

Common 

Data Classes additional 

(current 7-3) CDCs *1WD IEC 61400-25 


SCC 

IEC 61850 

Introduction to IEC 61850-7-2 

(ACSI) 

Abstract Communication Service 

Interface 


SCC 

IEC 61850 

Local and external Interfaces 

Client Client 

Server Server 

Server Server 

IF 

IF = interfcace 

IF 

Client/Server 

IEC IEC 61850 61850 

IF IF IF 

Peer-to-peer 


IF

SCC 

wind power 

plant 

“Sigvards“ 

Communication 

Services 

MMS/IEC61850/UCA 

Server DLL 

process 

values 

+ 

deadband 

check 

+ 

report 

if changes 

require report 

or 

log data for 

later retrieval 

report e.g. 

every 100 ms 

add TS 

scale 

unit 

add TS 

scale 

unit 

... 

add TS 

scale 

unit 

DLL Interface 

openDLL 

storeDLLpk01 

values (Int32) 

storeDLLpk02 


values WTur 

storeDLLpkn 


serviceDLL 

closeDLL 

VB Test Server 

meas. 

status 

status 

IEC 61850 

VB or C 

Application 

(real time data) 

Packet 1 

(array of Int) 

Packet 2 


Packet 3 


Packet x 


Simulator or 

Application 


... 

Vp01 

Vp02 

Vp03 

Vpx 

map data 

to models 

(e.g., WTur) 

Details about the DLLs: http://www.nettedautomation.com/solutions/uca/products/dll/demo/

SCC 

ACSI Services 

(mapped to MMS) 

ACSI Server 

IEC 61850 

61850-7-2 ACSI (Abstract 

communication service interface) 

Management, Management, Browse, Browse, Selfdescr. Selfdescr. 

Get, Get, Set, Set, Def., Def., Del., Del., Substitute Substitute 

SelectActiveSG, SelectActiveSG, SetSGValues,... 

SetSGValues,... 

Subscribe, Subscribe, Report, Report, ... ... 

Query Query Log, Log, Empty Empty Log Log 

Control, Control, SBO, SBO, ... ... 

Gen. Gen. Subst. Subst. Event Event (GOOSE, (GOOSE, ...) ...) 

Transm. Transm. of of sampled sampled values values 

Data Data 

Data Data Set Set 

Setting Setting Group Group 

Report Report Control Control 

Log, Log, Log Log Control Control 

Control Control Object Object 

GSE GSE Control Control 

SMV SMV Control Control 


SCC 

Input model Ouput model 

IEC 61850 

Input and Output models 

various control services 

Control response 

Online Management 

Online Selfdescription 

Reporting/Logging 

GOOSE / SMV 

DATA DATA 

GOOSE / GSSE local local 

various services 

IED 

Reporting 

Reporting 

DATA DATA 

GOOSE/SMV 

GOOSE/SMV 

control 

control 

Output (Signal) 

to process 

Input (Signal) 

from process 


SCC 

Service model Description Services 

Server Represents the external visible behaviour of a device. 

All other ACSI models are part of the server. 

Application 

association 

Provision of how two or more devices can be connected. 

Provides different views to a device: restricted 

access to the server's information and functions. 

Logical device Represents a group of functions; each function is defined 

as a logical node. 

Logical node Represents a specific function of the substation system, 

e.g., overvoltage protection. 

Data Provides a means to specify typed information, e.g., 

position of a switch with quality information, and timestamp. 

IEC 61850 

ServerDirectory 

Associate 

Abort 

Release 

LogicalDeviceDirectory 

GetAllDataValues 

LogicalNodeDirectory 

GetDataValues 

SetDataValues 

GetDataDefinition 

GetDataDirectory 

Data set Allow to group various data together. GetDataSetValue 

SetDataSetValue 

CreateDataSet 

DeleteDataSet 

GetDataSetDirectory 

Substitution Supports to replace a process value by a remotely 

set value. 

Setting group 

control 

ACSI models (1) 

Defines how to switch from one set of setting values 

to another one and how to edit setting groups. 

SetDataValues 

SelectActiveSG 

SelectEditSG 

SetSGValues 

ConfirmEditSGValues 

GetSGValues 

GetSGCBValues 


SCC 


Reporting and logging 


Describes the conditions for generating reports 

and logs based on parameters set by the client. 

Reports may be triggered by changes of process 

data values (e.g., state change or deadband) or 

by quality changes. Logs can be queried for later 

retrieval. 

Reports may be send immediately or deferred 

(buffered). Reports provide change-of-state and 

sequence-of-events information exchange. 

IEC 61850 

Buffered RCB: 

Report 

GetBRCBValues 

SetBRCBValues 

Unbuffered RCB: 

Report 

GetURCBValues 

SetURCBValues 

Log CB: 

GetLCBValues 

SetLCBValues 

Log: 

QueryLogByTime 

QueryLogByEntry 

GetLogStatusValues 


SCC 


Generic substation 

events 

(GSE) 

Transmission of 

sampled values 

Provides fast and reliable system-wide distribution 

of data; peer-to-peer exchange of IED binary 

status information. 

GOOSE means Generic Object Oriented Substation 

Event and supports the exchange of a wide 

range of possible common data organised by a 

DATA-SET 

GSSE means Generic Substation State Event 

and provides the capability to convey state 

change information (bit pairs). 

Fast and cyclic transfer of samples, e.g., of instrument 

transformers. 

Control Describes the services to control, e.g., devices or 

parameter setting groups. 

Time and 

time synchronisation 


Provides the time base for the device and system. 

File transfer defines the exchange of huge data blocks like 

programs. 

GOOSE CB: 

SendGOOSEMessage 

GetReference 

GetGOOSEElementNumber 

GetGoCBValues 

SetGoCBValues 

GSSE CB: 

SendGSSEMessage 

GetReference 

GetGSSEElementNumber 

GetGsCBValues 

SetGsCBValues 

Multicast SVC: 

SendMSVMessage 

GetMSVCBValues 

SetMSVCBValues 

Unicast SVC: 

SendUSVMessage 

GetUSVCBValues 

SetUSVCBValues 

Select 

SelectWithValue 

Cancel 

Operate 

CommandTermination 

TimeActivatedOperate 

services in SCSM 

GetFile 

SetFile 

DeleteFile 

GetFileAttributeValues 

IEC 61850 


control 

service 

request 

SCC 

local 

remote 

LLN0.Loc 

(local / remote) 

(for complete LD) 

Output model (1) 

... 

local 

XCBR.Loc 

remote 

OFF, 

BLOCKED, 

TEST/BL. 

ON, TEST 

IEC 61850 

XCBR.Mod 

XCBR.Beh 

Service 

Request 

test 

blocked 


Service 

Request 

test 

blocked 

SCC 

Set control attributes 

Control/Setpoint resp. 

Command termination 

Check 

conditions 

Control 

attrib. 

State Machine 

Output model (2) 

OFF 

ON 

status 

XCBR.Pos.ctlVal 

value 

XCBR.Pos.stVal 

Signal 

Conditioning 

IEC 61850 


from process 

Output (Signal) 

to process 


SCC 

logical node 

LN PVOC 


... Settings 

data 

Settings 

Operating Curve Type (volt.) AVCrv 

Operating Curve Type (amp) TmACrv 

Time Multiplier TmMult 

Minimum Operate Time MinOpTmms 

Max Operate Time MaxOpTmms 

Operate Delay Time OpDlTmms 

Type of Reset Curve TypRsCrv 

Reset Delay Time RsDlTmms 

LN PDIF 

Settings 

122 

3 

12 

435 

564 

653 

45 

43 

Restraint Mode RstMod 9 

Setting group model 

active buffer 

(active setting 

group) 

111 

3 

288 

12 

200 

3 

435 

3 

12 

564 

299 12 

435 

653 

3 435 

564 

47 

300 12 564 

653 

43 

3 

653 

45 

133 

435 

12 564 45 

48 

3 

435 

12 

653 43 

564 

435 

47 

653 

564 

43 

45 

653 

48 

45 

9 

43 

9 

9 

IEC 61850 


9 

9 

9 

setting groups 

each setting group 

contains a 

consistent set of 

values 

each DATA, e.g., 

„RsDlTmms“ is 

more complex 

than the depicted 

value (43). The 

CDC of this data is 

„ING“ = Integer 

status setting: 

- setVal 

- minVal 

- maxVal 

- stepSize 

- d

SCC 

retrieval 

method 

Polling (Get- 

DataValues) 

Unbuffered 

Reporting 

Buffered 

Reporting* 

Log (used for 

SOE logging) 

Input model - Overview 

time-critical 

information 

exchange 

can lose 

changes (of 

sequence) 

multiple 

clients to receiveinformation 

IEC 61850 

last change 

of data 

stored by 

typical client 

but not 

exclusive 

NO YES YES - Browser 

YES YES NO - Real-time GUI 

YES NO NO Server Data Concentrator 

NO NO YES Client Engineering 

Stations 


Query 

SCC 

Change 

in value 

Polling versus logging (1) 

Sequenceof-Events 

Log 

Object 

Var 00 

Var 01 

Var 02 

Var 03 

Var 04 

Monitor 

Programming 

Data Maintenance 

!? 

Get Get Reg Reg 00 

Get 00 

Get Reg Reg 00 

Get 00 

Get Reg Reg 00 00 

Reg Reg 00 00 

Reg Reg Reg 00 00 

 

Reg 00 00 

Reg00 

„Phs_A_Volt“ 

Analog 

x1000 

Volt 

IEC 61850 

Reg 00 

Reg 01 

Reg 02 

Reg 03 

Reg 04 

Programming 


Process 


!?

SCC 


configure 

configure 

Query 

Query 

Change 

Change 

in 

in 

value 

value 

Programming 


! 

Query 

Query 

Sequenceof-Events 

Log 

Object 

Reporting 

Monitor 

PhV.phsA 

mag(AV) 

Volt 

1000 

db=5 

IEC 61850 

IED 

IEC 61850 

Process 


...

SCC 


Functionality in IED 

IED online configurable 

“Documentation” in IED 

IEC 61850 


SCC 

Intermediate 

Value 

Quality 

change 

(qchg) 

SetDataValue 

Service „subEna“ 

Block/Unblock 

(local issue) 

Value 

(local issue) 

oper. 

block 

oper. unblocked 

Input model (1) 

operatorBlocked 

substituted 

Quality 

Substitution 

Value 

subst. 

unsubst. 

61850-7-3 

Signal 

Conditioner 

IEC 61850 


from process/ 

application 


SmpRate (FC=CF)

SCC 

Input 

model (2) 

Report 

Log 

data value and 

internal event 

instantaneous 

measured 

value 

deadbanded 

value 

data change 

(dchg) 

range 

of value 

data change 

(dchg) 

quality 

of value 

quality change 

(qchg) 

timestamp 

61850-7-2 

data attribute 

values 

instantaneou 

s 

measured 

value 


value 

range 

of value 

quality 

of value 

timestamp 

GetDataValue Response 

monitoring process 

data attributes 

instMag 

(FC=MX) 

mag (FC=MX, 

TrgOp=dchg) 

range (FC=MX, 

TrgOp=dchg) 

hh 

ll 

dchg 

quality (FC=MX, 

TrgOp=qchg) 

good, ... 

invalid 

t (FC=MX) 

61850-7-4/3 

IEC 61850 

db (FC=CF) 

hhLim, ... 

llLim (FC=CF) 


dchg 

qchg 

Intermediate 

Value 

operBl., subst. 

Quality change 

(qchg) 

timestamp from 

sample process

SCC 

Reporting 

BRCName 

RptEna 

DiscBuf 

Buffered Report 

Unbuff. Report 

BufTim 

IntgPd 

Buffer 

DataSetRef 

TrgOps (dchg, 

qchg, dupd, integrity, gi) 

Report 

formatting 

URCName 

RptEna 

IntgPd 

TrgOps (dchg, qchg, 

dupd, integrity, gi) 

DataSetRef 

Logging 

LCName 

LogEna 

Query 

Log 

Object 


Reporting and Logging 

Log 

Entry 

DataSetRef 

TrgOps (dchg, 

qchg, dupd) 

Log 

formatting 

61850-7-2 

Grouped by 

Data 

Set 

IEC 61850 

internal events 

instantaneous 

measured instantaneous 

value measured instantaneous 

measured value 

value 


deadbanded value 


data change 

value 

data (dchg) change 

value 


(dchg) 

range 

of valuerange 

data change 

of valuerange 


of value 


(dchg) 

quality 

of value quality 

of value quality 

quality change of value 

quality (qchg) change 

quality (qchg) change 

(qchg) 

timestamp 

timestamp 

timestamp 


multicast 

unicast or 

multicast 

SCC 

publisher 

GOOSE 

GOOSE 

IEC 61850 


GOOSE - Sampled Value 

Application 

GOOSE 

formatting 

GCRef 

GoEna 

ConfRev 

NdsCom 

DataSetRef 

publisher 

Sampled MV 

Application 

SMV 

SMV 

formatting 

SvcNam 

SvEna 

ConfRev 

SmpRate 

DataSetRef 

61850-7-2 

Grouped by 

Data 

Set 

Grouped by 

Data 

Set 

any data value 

instantaneous 

measured 

value 

status 


value 

status 

value 

samples of 

measured values 

instantaneous 

measured 

instantaneous value 

measured 

instantaneous value 

measured 

value

3 

SCC 

Operate 

Report 

5 

6 

7 

1 

2 

Trip 

4 

Substitute 

Log 

Configurate 

Selfdescription 

LN, Data and Services 

... 

XCBR 

Pos 

Control value 

Operate time 

Originator 

Control number 

Status value “stVal” 

Quality 

Time stamp 

... 

Substit. enable 

Substit. value 

... 

Pulse configuration 

Control model 

SBO timeout 

SBO class 

IEC 61850 

status 

substitution 


... 

BlkOpn 

Controls 

control 

configuration, 

description, 

and extension

SCC 

IEC 61850 

Communication mappings 8-x, 9-x 


SCC IEC 61850 Profiles 

Application 

Presentation 

Session 

Transport 

Network 

Data Link 

Physical 

sampled 

values GOOSE 

9-1 9-2 

Ethertype 

Information 

IEC 61850 

Information exchange 

IEC 61850 

IEC 61850-8-1 

IEC 61850/ISO 9506 

TCP 

Ethernet, ... 

Physical 

ASN.1 

Session 

RFC 1006 

IEC 61850 


IP 

IETF

SCC 

IEC 61850 

Communication mapping 8-1 


SCC 

Mappings of IEC 61850 

IEC 61850-7-2 

Logical Node Data Data Set GOOSE 

... 

SCSM 8-1 

Mapping 

to MMS (ISO/IEC 9506 Part 1 and Part 2) 

and 

to ISO/IEC 8802-3 

IEC 61850 

Transmission of 

Sampled Value 

SCSM 9-x 

Sampled values over ... 

9-2 

... 

ISO/IEC 8802-3 

9-1 

... 

serial 

unidirectional 

multidrop 

point to point link 


...

SCC 

IEC 

61850-7-2 

IEC 61850-8-1 

Information 


use 

DATA 

LOGICAL NODE 

LOGICAL DEVICE 

map 

MMS Named 

Variable 

Domain 

IEC 61850-7-4 

Common DATA 

Classes 

DATA-SET 

map 

MMS Named 

VariableList 

GetDataValues -> Read 

SetDataValues -> Write 

IEC 61850-7-3 

Control Blocks 

(BRCB, URCB, GoCB,... LCB) 

Control 

Block 

Attributes 

Control Blocks 

MMS message* 

* GOOSE/GSSE/SMV messages 

map directly to ISO/IEC 8802-3 

IEC 61850 

LOG 


map 

MMS Named 

Variable 

Mapping 8-1 

Control 

Block 

Behavior 

map 

MMS 

Journal

SCC 

MMS Named Variable 

K03/Q0CSWI 

K03/Q0CSWI$ST 

K03/Q0CSWI$ST$Pos 

K03/Q0CSWI$ST$Pos$stVal 

K03/Q0CSWI$ST$Pos$q 

K03/Q0CSWI$ST$Pos$t 

K03/Q0CSWI$ST$Pos$origin$orCat 

K03/Q0CSWI$ST$Pos$origin$orIdent 

K03/Q0CSWI$SV 

K03/Q0CSWI$SV$Pos 

K03/Q0CSWI$SV$Pos$subEna 

K03/Q0CSWI$SV$Pos$subVal 

K03/Q0CSWI$SV$Pos$subQ 

K03/Q0CSWI$SV$Pos$subID 

K03/Q0CSWI$CO 

K03/Q0CSWI$CO$Pos 

K03/Q0CSWI$CO$Pos$ctlVal 

K03/Q0CSWI$CO$Pos$origin$orCat 

K03/Q0CSWI$CO$Pos$origin$orIdent 

K03/Q0CSWI$CO$Pos$T 

K03/Q0CSWI$CO$Pos$Test 

K03/Q0CSWI$CO$Pos$Check 

K03/Q0CSWI$CO$Pos$SID 

K03/Q0CSWI$CF 

K03/Q0CSWI$CF$Pos 

K03/Q0CSWI$CF$Pos$ctlModel 

IEC 61850 

Mapping 8-1 

(to MMS) 

4 structured 

components of the MMS 

Named Variable 

Based on a document prepared by Jochen Haude (RWE). 


A3 4E 

A0 4C 

SCC 

Identifier (Tag) 

Length 

Content 

01 06 

80 04 XX XX XX XX 

A0 42 

A2 40 

8A 11 XX XX XX XX XX XX XX XX XX XX 

XX XX XX XX XX XX XX 

84 02 01 10 

84 04 04 80 00 00 

A2 1E 

A2 1C 

85 01 01 

84 03 03 00 00 

90 08 XX XX XX XX XX XX XX XX 

A2 08 

85 01 03 

8A 03 XX XX XX 

85 01 01 

Σ 80 Byte 

(44 Byte pay load) 

Report 

[DatNam=FALSE] 

(K03/Q0CSWI.Pos) 

1 octet for the tag; 

1 octet for length; 

1 octet for value 

IEC 61850 

MMSpdu ::= CHOICE { ... 

. unconfirmed-PDU [3] IMPLICIT SEQUENCE { ... 

. . CHOICE { ... 

...informationReport [0] IMPLICIT SEQUENCE { ... 

....variableAccessSpecification CHOICE { ... 

.....variableListName [1] CHOICE { ... 

......vmdSpecific [0] IMPLICIT VisibleSting } 

.....}, -- end of variableAccessSpecification 

....listOfAccessResult [0] INPLICIT SEQUENCE OF CHOICE { ... 

.....success CHOICE { ... structure [2] IMPLICIT SEQUENCE OF -- „Data“ 

......CHOICE {... visible-string [10] IMPLICIT VisibleString }, -- RptID 

......CHOICE {... bit-string [4] IMPLICIT BIT STRING }, -- OptFlds 

......CHOICE {... bit-string [4] IMPLICIT BIT STRING }, -- InclBS 

......CHOICE {... structure [2] IMPLICIT SEQUENCE OF -- Value(s) - here only one 

.......CHOICE {... structure [2] IMPLICIT SEQUENCE OF -- Value 

........CHOICE {... integer [5] IMPLICIT INTEGER }, -- stVal 

........CHOICE {... bit-string [4] IMPLICIT BIT STRING }, -- q 

........CHOICE {... utc-time [17] IMPLICIT UtcTime}, -- t 

........CHOICE {... structure [2] IMPLICIT SEQUENCE OF -- origin 

.........CHOICE {... integer [5] IMPLICIT INTEGER }, -- origin.orCat 

.........CHOICE {... visible-string [10] IMPLICIT VisibleString }} -- origin.orIdent 

........} -- end of „Value“ 

.......}, -- end of „Value(s)“ 

......CHOICE {... integer [5] IMPLICIT INTEGER } 

......} -- end of „Data“ 

.....} -- end of ListOfAccessResult 

-- reasonCode 

....} -- end of informationReport 

...} 

Interpretation of received message 

. . } -- end of unconfirmedPDU 

. } -- end of MMSpdu 

(Tag values -> ASN.1 syntax (Schema)) 

MMS Syntax (written in ASN.1) defined in ISO 9506-2 

Based on a document prepared by Jochen Haude (RWE). 


SCC 

Serialization applying ASN.1 

BER encoded MMS messages 

Serialization applying 

XML encoded „MMS 

messages“ 

~1/10 

Mappings 

Implemented 

Service 

Models: 

LD, LN, 

DATA, 

DATA-SET, 

Control Blocks, 

LOG, ... 

Mapped to MMS 

Models and Services 

~6/10 

development effort (estimated) 

IEC 61850 

~3/10 

Real 

Data 

given 


SCC 

IEC 61850 

Communication mapping 9-1 


SCC 

Proprietary 

Link 

Architecture 

Proprietary 

Link 

Line Protection Bay Controller 

Ethernet 

Controller 

Multiple 

Ports 

Ethernet 

Controller 

Merging Unit 

Ethernet 

Controller 

Serial unidirectional 

Multidrop point to point link 

Binary Inputs 

IEC 61850 

Synchronisation, monitoring, test 

and configuration interfaces 


SCC 

Communication Stack 

100Base-FX 

IEEE 802.3 

SCSM for ISO/IEC 8802-3: 

Definition of ASDU's 

Empty 

Empty 

Empty 

Empty 

MAC - Sublayer 

ISO/IEC 8802-3 

and 

Priority tagging/VLAN acc. to 

IEEE 802.1Q 

10Base-FL 

IEEE 802.3 

10Base-T 

IEEE 802.3 

Link Layer 

IEC 61850 

Application Layer 

Presentation Layer 

Session Layer 

Transport Layer 

Network Layer 

AUI-Interface 

IEEE 802.3 

Physical Layer 


SCC 

2 7 

Byte 1 ASDU msb Length of ASDU ( = 44) 

Byte 2 

Header lsb 

Byte 3 msb LNName ( =02) lsb 

Byte 4 msb DataSetName (=01) lsb 

Byte 5 msb 

Byte 6 

Byte 7 msb Rated Phase Current 

2 6 

IEC 61850 

Content universal data set based on IEC 60044-8 


2 5 

2 4 

2 3 

LDName 

Byte 8 lsb 

Byte 9 msb Rated Neutral Current 

Byte 10 lsb 

Byte 11 msb Rated Phase Voltage 

Byte 12 lsb 

Byte 13 msb Rated Delay Time 

Byte 14 lsb 

Byte 15 ASDU msb Current Phase A, prot. 

Byte 16 

Byte 17 

(universal 

data set ) 

msb Current Phase B, prot. 

lsb 

Byte 18 lsb 

Byte 19 msb Current Phase C, prot. 

Byte 20 lsb 

Byte 21 msb Current Neutral 

... 

... 

2 2 

2 1 

2 0 

lsb

SCC 

Conformance testing 

IEC 61850 


SCC 

IEC 61850 

Part 10: Conformance Testing 

Scope 

This part of IEC 61850 specifies methods for 

conformance testing of devices 

of substation automation systems. 

In addition it gives guidelines for setting up test 

environments and specifies levels of 

interoperability. Thus it enables the 

investigation of conformance claims and to 

establish their validity. 


SCC 

Start 

Static Conformance 

review 

Selection 

Parameterisation 

Dynamic Tests 

________________________ 

Basic Interconnection testing 

Capability Testing 

Behaviour Testing 

Analysis of Results 

IEC 61850 

Conceptual conformance assessment process 

PICS 

MICS 

PIXIT 

Final Conformance Review 

Synthesis and Conclusion 

Test Report Production 


End 

Static Conformance 

Requirm. 

Dynamic Conformance 

Requirm. 

Conformance 

Test Suite

IEC 61850 

SCC Test system configuration 


SCC 

f1 

Comm. 

Processor 

Physical device #1 

Sender 

Performance 

Time Requirement 

a b c 

IEC 61850 

Comm. 

Processor 

Physical device #2 

Receiver 


f2

SCC 

Additional issues 

IEC 61850 


SCC 

UCA, TASE.2 and IEC 61850 

Standard: 1997 

TASE.2 

IEC 61850 

UCA 

IEC 61850 

Standard: 2002/3 

IEEE TR: 1999 


IEC 61850 

SCC Comparison of Modelling 

TASE.2 

(1997) 

61850 

(2003) 

1 

MMS 

? 

MMS 

Mapping 

Mapping 

User 

Convention 

„Xyz“ Type 

Mapping 

TASE.2 

Services 

61850 

Services 

2 




Points 


Logical Device 

LN 

LN 

LN 

XSWI ST Pos 

XSWI MX V 

XSWI RP Pos 

XSWI LG A 

... 

Type 

Type 

Type 

Type 

Type 

Type 

„Points“ 

„Device 

Model“ 


3 

„Points“

10 

3 

4 

5 

6 

SCC 

General requirements 

System and 

Projectmanangement 

Communication 

requirements 

Configuration Description 

Language 

Conformance Testing 

IEC 61850 - UCA 

61850-x-y 

7-4 

7-3 

7-2 

8-x 

9-x 

Compatible Logical Node 

and Data Classes 

Common Data Classes 

Abstract Communication 

Service Interface (ACSI) 

Mapping to MMS and Ethernet 

SV Mapping to Ethernet 

IEC 61850 

UCA 2 

GOMSFE 

Device Models 

Building Blocks (Bricks) 

Common Class Definitions 

Standard Data Types and 

Common Components 

GOOSE Communication 

Common Application 

Service Model (CASM) 


SCC 

Features 

Application data 

and encoding 

Basic data models 

and services 

common and specific data 

structures and services 

Data structures for 

device models 

Information models 

Comparison 

IEC 61850 

870-5 TASE.1 TASE2 61850 

Yes Yes Yes 

Yes 

Limited and fixed 

very flexible, 

can add new 

few few some many 

No No No many 

No No No many 

Comprehensive comparison 101, 103, 104, TASE.2, 61850: http://www.nettedautomation.com/news/n_44.html 


SCC 

UCA 

compatible 

IEC 61850 - UCA 

... 

IEC 61850 


SCC 

IEC 61850 

Example of Decentraliced Power System and 

Open Communication Systems based on IEC 61850 

WIND TURBINE GENERATOR SYSTEMS 

IEC 61400 Part 25 - Communications for 

monitoring and control of wind power plants 

Details and first Working Draft: http://www.scc-online.de/std/61400 


SCC 

IEC 61850 


SCC 

schwarz@scc-online.de 

www.scc-online.de 

IEC 61850 

www.nettedautomation.com/news/ 

Demo-Software: 

www.nettedautomation.com/solutions/demo/20020114/index.html

IEC61850 - scc-online.de

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