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8/12/2019 What is IEC61850
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IEC 61850 & IEC 61400-25 SCC
Motivation:sustainableinteroperability
The standards IEC 61850 „Communication networks and systems for power utility automation“ and IEC 61400-25 „Communications for monitoring and control of wind power plants“ provide support for sustainable interopera-bility: Information Models, Information Exchange Methods, Protocol Mappings, and System Configu-ration Language (SCL) for Power Systems (Generation, Transmission, and Distribution for HV, MV, and LV, … ).
Data Models
IEC 61850-7-4xx
NettedAutomation NettedAutomation GmbH GmbH
Information & Communication Systems Information & Communication Systems
Substations (7-4) 160 LN900 DO
Hydro Power (410)
63 LN350 DO
DecentralizedEnergy Res. (420)
50 LN450 DO
IEC 61400-25-2
Wind Power
16 LN250 DO
Logical Nodes (LN) represent real-world Inputs, Outputs, Ratings, and Settings of functions or equipment. A LN provides a list of named data objects (DO). The LN “XCBR” represents a real “circuit breaker” with the dataobject (DO) “Pos” (Position). IEC 61850-7-2 defines Information Exchange Methods, e.g., for the position
(with Client/Server services, GOOSE, SMV). Data flow is specified by a SCL file (IEC 61850-6).
61850-6 SCL configuration file
Realdevices insubstation
or windturbines
SCSM, e.g.61850-8-1
or 9-2 ...
Virtual World
LN
LN
LNLN
OpCnt
Pos
XCBR
Logical device
virtualization
61850-7-4 logical
node (circuit breaker)61850-7-4 data
(position)
61850-7-2services
Single linediagram(topology)
Mappingreal worldto models
Models of thereal worldObjects
InformationExchangeServices
CommunicationMappings
CommunicationNetwork
C o n f i r u r a t i o n
f i l e
( S C L ) ; p a r t 6
Abstract communicationservice interface (ACSI);part 7-2 and 61400-25-3
When ?
Mapping to e.g. MMS inpart 8-1 andWebServices, DNP3, …in IEC 61400-25-4
How ?
Logical node, dataobjects, and common dataclasses; parts IEC 61850-7-4 and 7-3, 61400-25-2
What ?
IED Description (online)
m e s s a g e
s
m e s s a g e s
IED Description (off-line)
Communication profiles(Ethernet, TCP/IP, OSI
)
Information exchange
(publ./subscr., get, set,control, ... reporting,
logging, get IEDdescription)
InformationModels
CIMIEC 61968/70
XCBR
PDIS
WTUR
CC
TCP/IPNetwork MMSMMS
GOOSE/SMV Layer 2
QA1
QE1
QE2
QE3
QC1
QB1T1
Client/subscriber
Example see reverse side
8/12/2019 What is IEC61850
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Example: Measurement LN “MMXU” represents power, voltages, currents, impedances, … in a three-phase electrical system. The valuescan be communicated by various services. The LN “MMXU” comprises values for measurements, monitoring, configuration, set-tings, description, and substitution. These values can be communicated by various services like read (polling), reporting, GOOSE,logging and log query. Recording and logging are build upon monitored value changes. The SCL configuration file .SCD (System
Configuration Description) specifies the single line diagram of the substation, the information model, the parameters of the con-trol blocks for reporting and logging, GOOSE, SV, the binding to the process and the data flow.
.SCD
TotWTotVArTotVA TotPFHzPPVPhV A
W VAr VA PFZ
Total Active Power (Total P)Total Reactive Power (Total Q)Total Apparent Power (Total S) Average Power factor (Total PF)FrequencyPhase to phase voltagesPhase to ground voltagesPhase currents (IL1, IL2, IL3)
Phase active power (P)Phase reactive power (Q)Phase apparent power (S)Phase power factorPhase Impedance
LN „MMXU “
current / voltage samples from instrumenttransformers by sampled value exchangeservices of IEC 61850-7-2 / IEC 61850-9-2(e.g., from Merging Unit)
LN PhsBTCTR Amp
LN PhsBTVTR Vol
Log
Read
Report
Configure
RetrieveModel
QueryLog
phsA.cValphsB.cValphsC.cVal
instValdead banded valueangle
range
S V
S V
RCB
LN and data objects
Process bus
Station bus
GOOSE GCB
… 4.000 …
samples/sec
QA1
QE1
QE2
QE3
QC1
QB1
T1
Virtual World
...
OpCnt
Pos
XCBR
LNLNLN M
a p p i n g
TCP/IPNetwork
MMS
tn+2tn+1
value (tn)
Reports/GOOSE from server/publisher to client/subscriber
(or store entries into IED log)
tn+3
value (tn+3)
tn Time
stVal(Status
Value)
value (tn+1) value (tn+2)
FALSE
TRUE
MMS
Log
Read, or
event-driven
Reports
GOOSE/SMV Layer 2
event-driven GOOSE message
MMS
Query
Log statuschange
Information flow (example)
www.nettedautomation.com/seminars , www.nettedautomation.com/iec61850li , www.blog.iec61850.com
© NettedAutomation GmbH, 2008-2010; by Karlheinz Schwarz, SCC (Karlsruhe/Germany), [email protected] 2010-11-22
