an insight into iec 61850 protocol implementation...

© ERLPhase Power Technologies Ltd. All Rights Reserved.© ERLPhase Power Technologies Ltd. All Rights Reserved.

An Insight into IEC 61850 ProtocolImplementation with ERLPhase new generation

DevicesIEEE Winnipeg

January 25, 2011

Dr. Krish Narendra, PhDVP Technology and Quality

Outline

• ERLPhase – History, Products, New Generation Devices• IEC 61850 – Development History• IEC 61850 Standard Parts• IEC 61850 Substation Communication Architecture• IEC 61850 Data Modeling Architecture• L-PRO (Line Protection) Relay logical nodes and its

implementation• Communication Architecture–Message flow• Engineering Process with IEC61850 Tools and GOOSE

message examples (8-1)• TESLA Recorder and IEC 61850 GOOSE• Phasor Measurement Unit Data over 61850• ERLPhase Merging Unit – Process Bus (9-2)• Conclusions

ERLPhase - History

• ERLPhase was formed in 2007 as the next generation ofAPT Power Technologies and the Relay/Recorder divisionof NxtPhase T&D Corp.

• ERLPhase is a subsidiary of Easun Reyrolle Ltd of India,an expanding international company. A major in the fieldof power management, encompassing protection, control,automation, metering and switchgear.

ERLPhase - History

• R&D, engineering, production and customer support basein Winnipeg, Canada.

• Center of Excellence for the transmission level graderelay and recorder products.

• Direct sales responsibility into the America’s plus supportthe international marketing group for rest of the world.

• Application engineers and sales managers throughoutUSA, Canada and Latin America.

ERLPhase – Products

IEC 61850 Compliant new generation devices

IEC 61850 – Development History

1994

• Utility Communication Architecture (UCA)• EPRI, IEEE – lead team

• Utility Communication Architecture (UCA)• EPRI, IEEE – lead team

1996

• IEC 61850• IEC TC 57

• IEC 61850• IEC TC 57

1997-curent

• IEC 61850• Merged with UCA 2.0• Various Updates – on going activity

• IEC 61850• Merged with UCA 2.0• Various Updates – on going activity

DNP3, LON, ICCP, Modbus – exiting protocols – does not fullyaddress todays Utility Needs

DNP3, LON, ICCP, Modbus – exiting protocols – does not fullyaddress todays Utility Needs

IEC 61850 Standard Parts

IEC 61850 SubstationCommunication Architecture

PROCESS BUS (9-2 )0.1/1 GbpsPROCESS BUS (9-2 )0.1/1 Gbps

Merging UnitMerging Unit

Digital DataDigital DataAnalog SignalAnalog Signal

STATION BUS (8-1) 10/100/1000MbpsSTATION BUS (8-1) 10/100/1000Mbps

Remote GatewayRemote Gateway

InternetInternet

Energy Management System(EMS center)

Energy Management System(EMS center)

Other remote usersOther remote users

Station legacy CTs/PTsStation legacy CTs/PTs

IED with no processbus support

IED with no processbus support

GPSGPS

IEC 61850 Data Modeling Architecture

Physicaldevice(PD)

LogicalDevices

(LD)

LogicalNodes (LN)s

LNsattributes

RTOS processorRTOS processor

Implemented onRTOS processorImplemented onRTOS processor

Brief Details of the L-PRO logical nodes

Implementation of IEC 61850with Line Protection Relay – L-PRO 4000

Measurement

•MMXU1

Protection

•PDIS1

•RSYN1

•RREC1

•PTOV1

•PTUV1

•PTOF1

•PTUF1

•PFRC1

•PIOC1

•RBRF1

Records

•RDRE

System

•GGIO1•GGIO2•GGIO3•GGIO4•GGIO5

Virtual Elements

•GGIO1•GGIO2•GIO3

LOGICAL DEVICSES USEDLOGICAL DEVICSES USED7-47-4

MORE DETAILS ARE AVAILABLE INMODEL IMPLEMENTATIONCONFORMANCE STATEMENT (MICS)

MORE DETAILS ARE AVAILABLE INMODEL IMPLEMENTATIONCONFORMANCE STATEMENT (MICS)

Example of 21 Distance ProtectionLogical Node - PDIS for pickup and trip

L-PRO_1 ----------Physical device– PDIS1--------------Distance protection logical node (7-4)

• …– ST---------- Functional Constraint (Status Information)

» str--- Data

• General---attribute (pickup)

L-PRO_1 ----------Physical device– PDIS1--------------Distance protection logical node (7-4)

• …– ST---------- Functional Constraint (Status Information)

» Op--- Data

• General---attribute (trip)

PICKUPPICKUP

TRIPTRIP

Real Time Operating System(RTOS)

Real Time Operating System(RTOS)

Communication Architecture–Message flow

Mapping (MMS)IEC 61850 -7-2,7-3,7-4, 8-1,9-2

Mapping (MMS)IEC 61850 -7-2,7-3,7-4, 8-1,9-2

DSPProcessor

DSPProcessor

GOOSEGeneric Object Oriented

Substaion EventTime Critical

GOOSEGeneric Object Oriented

Substaion EventTime Critical

SVSampled Value

Time Critical

SVSampled Value

Time Critical

TIMEMessage

(UTC)

TIMEMessage

(UTC)

IRIG

IRIG

15881588

Non – time criticalMessage path

Non – time criticalMessage path

EthernetEthernet

Publisher and Subscriber architecture forGOOSE with ERLPhase Devices

PUBLISHERL-PRO

PUBLISHERL-PRO

PUBLISHERT-PRO

PUBLISHERT-PRO

SUBSCRIBERB-PRO

SUBSCRIBERB-PRO

SUBSCRIBERTESLA

SUBSCRIBERTESLA

STATION BUS (8-1)STATION BUS (8-1)

MICS >Model InformationConformance Statement

PICS>Protocol InformationConformance Statement

PIXIT>Protocol Implementation ExtraInformation for Testing

TICS> Tissue (test issues)Conformance Statement

MICS >Model InformationConformance Statement

PICS>Protocol InformationConformance Statement

PIXIT>Protocol Implementation ExtraInformation for Testing

TICS> Tissue (test issues)Conformance Statement

GOOSEGOOSE

Engineering Process with IEC61850 Tools

• Substation Configuration Language (SCL)- XML Based

– ICD -> IED Capability Description file

– CID -> Configuration IED Description file

– SCD-> Substation Configuration Description file

– SSD ->Substation Specification Description file

Engineering Process with IEC61850 Tools…

SystemConfiguration

Tool

SystemConfiguration

Tool

DATABASEDATABASE

CID fileCID file CID fileCID file

ICD filesICD files

SCD filesSCD files

GOOSE (8-1) / SV (9-2) - explanation

• GOOSE and SV messages are time critical messagesand hence there will NOT be any acknowledgements

• Message flows directly from data link layer to RTOSinterface

• GOOSE and SV (9-2) are multicast messages

• GOOSE messages STARTS first time when the dataattribute or status changes of any logical node defined bythe data set.

GOOSE Example…

• GOOSE never waits for any acknowledgement from thesubscriber, but retransmits itself with a minimum timeinterval – in ERLPhase relays it is 10 mS, 20mS,40mS….12 sec maximum time.

Data changedetected andtransmission

starts

Data changedetected andtransmission

starts

Firstretransmission

after 10 mS

Firstretransmission

after 10 mSTmax = 12 secTmax = 12 sec

Tmin= 1 mSTmin= 1 mS

GOOSE Example….

• How does the subscriber knows of the retransmission andthe new event?– GOOSE message has a STATE number and a SEQUENCE

number for distinguishing between a new event andretransmitted message

– For example, if 600 is the STATE number for new eventand first SEQUENCE will be set to 0

– STATE number remains 600 (if there is no new event) andSEQUENCE will be updated to 1 after first retransmission.

– STATE number changes 601 (new event) and SEQUENCEstarts at 0 and the old message will become obsolete

•GOOSE TriggerVendor 2

Switch 1

Substation LAN(fiber optic)

•GOOSE TriggerVendor 1

Switch 2

Switch 3

TESLA Recorder and IEC 61850 GOOSE

Substation LAN -Station Bus

TESLA Recorder and IEC 61850 GOOSE….

System WAN

IEC 61850 - 90-1Communication between

substations

IEC 61850 - 90-1Communication between

substations

Phasor Measurement Unit Data over 61850

• IEC TR 90-5 is working on Synchrophasor transport over61850 communications with following schedule

• PMU Modeling -> Using MMXU and MSQI LNs• PMU Communication-> Using GOOSE- USV (sampled

value mapped to UDP)

ERLPhase Merging Unit – Process Bus (9-2)

Protection: 80 s/cRecording :320 s/cProtection: 80 s/cRecording :320 s/c

Conclusions

• ERLPhase new generation products are ready for the future IEC 61850based digital substation protection – Station Bus (8-1)

• Merging Unit (SV ) based on process bus (9-2) has been planned for theyear 2012

• IEC 618650 -TC 57- Working Group is continuously working on improvingthe standard to realize the SmartGrid concepts

IEC 61850 - an Interpretation…..

IEC 61850IEC 61850

ElectricalUtilities

ElectricalUtilities

VendorsVendors

© ERLPhase Power Technologies Ltd. All Rights Reserved.© ERLPhase Power Technologies Ltd. All Rights Reserved.

Questions?

Dr. Krish Narendra, PhDVP Technology and Qualityknarendra@erlphase.com

204-477-0591 x230