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IEC 61850 standard update

Christoph Brunner, Switzerland

IEC 61850 Europe Conference

Amsterdam

October 18 – 20, 2016

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Content

◼ Improvements helping the implementation

◼ Status of Edition 2.1

◼ Systems using mixed configurations

◼ Updates on new domains

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Testing in a life scenario

◼ IEDs are stand alone devices

◼ Functionality of one device limited

◼ Physical isolation for test straightforward

◼ Test patterns rather simple

Test Equipment

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Testing with IEC 61850 process bus

◼ No wired outputs from relay

◼ Protection function distributed on multiple devices

◼ Physical isolation not desired – Ed 2 supports logical isolation

Test Equipment

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Support for isolation and test

• LN Mode test and test/blocked

• Control service parameter Test

• Quality attribute q.test

Separating test and normal information

flow

• Parameter Simulation in GOOSE and SV message

• DO Sim in LN LPHD

Separating simulated and

normal messages

• Mirroring of control service requests

Support observation

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Engineering of distributed applications

◼ GOOSE – wires become virtualized

◼ Signal flow– engineered in SCL (ExtRef)

– described in online data model (InRef / Ed2)

IED 2

IED 1

21ZPTRC1.Tr

Trip BkrPDIS1

InRef=IED1/21ZPTRC1.Tr

XCBR

InitiateBFPDIS3

PDIS2

PTRCVirtualInput

RBRF.OpEx

RBRF

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Two configuration steps

1. Message subscription

2. Signal flow

LN xxxx

LN yyyy Virtual Output

PublisherApplication

LN aaaa

LN bbbb

LN cccc

VO 01VO 02VO 03VO 04

01 02 03 04

01 02 03 04

01 02 03 04

VI 01VI 02

VI 04

Virtual Input

Subscriber Application

VI 02VI 03

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Declaration of ExtRef

◼ If an IED accepts inputs anywhere in the model, no declarations are made

◼ If an IED has limitations, where to receive inputs, the icd/iid file has to declare the inputs (“later binding”)

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Principle of later binding

◼ IED declares required inputs by– Indicating expected type with a DO name at

pDO

– Indicating semantic of the input in the description

IEDLN CSWI

DO OpOpn

DO OpCls

IEDLN XCBR

GOOSE (OpOpn, OpCls)

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System design with IEC 61850

◼ Routing of signals between functional elements

◼ Apply logic functions on signals

◼ IEC 61850-90-11 will describe methods to expose logic functions in a standardized way

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Profile for accurate time synchronization

◼ IEC 61850-9-3 has been released in 2016

◼ Is a joint standard with IEEE replacing former IEEE C37.238

◼ Is a key technology for process bus / sampled value transmission based on IEC 61850-9-2– Allows accurate (+/- 1 µsec)

synchronization over the Ethernet network

– Will be referred by IEC 61850-9-2

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Summarizing enhancements of Ed 2

◼ Consistent and clarified definitions of data objects in part 7-4

◼ Basic support for Smart Grid Application

◼ Addresses challenges for efficient engineering raised by major utilities

◼ Introduces a section in each part of the standard to address backwards compatibility

◼ Clarifications and corrections by integration of TISSUES

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Content

◼ Improvements helping the implementation

◼ Status of Edition 2.1

◼ Systems using mixed configurations

◼ Updates on new domains

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Status of Ed 2.1

◼ Standard parts published as Ed 2.1 will be published as amendment– A informative document will be published as

well reflecting the consolidated version

◼ Parts 6, 7-2, 7-3, 7-4 and 9-2 have been circulated as CDV

◼ Parts 4, 5, 7-1 and 10 are as well planned to be revised

◼ Target release date as IS: Mid/End 2017

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Content

◼ Improvements helping the implementation

◼ Status of Edition 2.1

◼ Systems using mixed configurations

◼ Updates on new domains

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How to handle mixed configurations?

◼ Systems considered as mixed configurations are those systems where– IEDs communicate based on different version

of the standard

– Engineering needs to be done with tools supporting different versions of the standard

◼ Basic approach– Clients need to support the highest version

– System configuration tool needs to support the highest version

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SCL compatibility between versions

◼ With Ed 2 the concept of may ignore / must understand was introduced to support forward compatibility– If an element marked as “must understand” is not

known to the tool, it can not use the parent element

– Example: With routable GOOSE introduced by IEC 61850-90-5 additional configuration parameters have been added; a tool that does not understand these parameters, may not use that control block

◼ Between Ed 1 and Ed 2 some specific care needs to be taken – system tool may need to be able to export in downgraded format

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Engineering of mixed configurations

◼ Annex is planned to be added to IEC 61850-6 discussing how to handle configuration of mixed systems– Ed 1 and Ed 2

– Ed 2 and future editionsMust understand / may ignore

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Content

◼ Improvements helping the implementation

◼ Status of Edition 2.1

◼ Systems using mixed configurations

◼ Updates on new domains

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Distribution Automation

◼ IEC 61850-90-6: Using IEC 61850 for Distribution Automation– Requirements and use

cases

– IEC 61850 information models

– Communication requirements and services

– Configuration

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Use cases considered

◼ Fault location, isolation and restoration (FLISR)– Using local control

– Using centralized control

– Distributed control

◼ Voltage and Var control

◼ Anti-islanding protection based on communication

◼ Automatic transfer switch

◼ Fault indication and report

◼ Monitoring energy flow

◼ Environment situation awareness

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FLISR – Fault identification and location

Electric Grid

FLISRapp

FeProt at end substation FltPInd at feeder level Electric System operator

Fault IsolationFault Isolation

Most problable faulty section()

Most probale faulty section()

Trip conditions()

Fault signature()

de-energise()

Fault signature()

Fault detected()

Fault signature()

Fault start()

Re-energise (attempt)

Permanent fault confirmation()

de-energise()

Reclosing cycle start()

Trip has operated()

Fault signature()

Faulty section identified()

Trip conditions()

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LNs for fault passage indication

cmp Fn function breakdown without LCLD

LN::TCTR

LN::TVTR

LN::PTUV

LN::PTOV

«optional»

NewLN::SVPI

NewLN::SFPI

LN::PTOC

LN::PTOC

«optional»

NewLN::SFST

«optional»

IHMI

LN::PTUC

LN::PTOC

«optional»

NewLN::SCPI

«optional»

IHMI

Fault indication

Voltage signal

Fault statistics

op(general, phsA, phsB, phsC)

op(phsA, phsB, phsC)

op(general, phsA, phsB,

phsC)

Prs, Abs

Str, Op

Current signal

op(phsA, phsB, phsC)

Prs, Abs

Fault indication

Fault detection

TCTRTVTRPTOCPTUCPTUVPTOV

Current / Voltage

PresenceIndication

SCPISVPI

Fault passage indication

SFPI

Fault statistics

SFST

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Integrating DER

◼ IEC 61850-90-15: IEC 61850 based DER Grid Integration– Basic concepts

– Functional requirements

– IEC 61850 data models

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Integration of DER system

DER Unit

DER Unit

DER System

Electrical connection (ECP)

PCC (Point of common coupling)Utility EPS

Facility EPS

DER System

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Open System for Energy Services OS4ES

Collaborative project funded by the European Commission

◼ Aim to provide a solution that closes the current gap between DERs and DSOs, and instead make them cooperate dynamically so that the aggregated DER flexibility provides added value to active electricity network management.

◼ Based on international standards (IEC 61850, CIM)

◼ Plug and play using a registry

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Example – Active power

… actual and rated values

class Activ e Power Generation

DER Model::Energy Serv ice

+ SvcId :int

+ SvcRegisStr :Time

+ SvcRegisEnd :Time

+ DetTyp :DetType

+ Disp :boolean

+ Rely :int = 100 %

Energy Serv ices -

Reserv ation::Reserv ation of

serv ice

+ RsvId :int

+ RsvOwner :int

+ RsvSchd :Schedule

+ RsvStr :Time

+ RsvEnd :Time

«abstract»

DER Model::Energy serv ice

related operation setpoints

and control

«abstract»

Energy Serv ices::

Activ e Power

Energy Serv ices::

Activ e Power

Generation

Energy Serv ices - Actual::Gen

Actual

+ MaxWInst :float

+ MinWInst :float

Service offer availabil ity schedule

Energy Serv ices - Av ailability::Activ e

Power Generation Av ailability

+ MaxW :Schedule

+ MinW :Schedule

Forecast

Energy Serv ices - Forecast::Gen Forecast

+ MaxWPct :Schedule

+ MinWPct :Schedule

Rated parameters of energy services

Energy Serv ices - Rated

Parameters::Gen Rated Parameters

+ MaxWRtg :float

+ MinWRtg :float

+ PowerStepSize :float

Energy Serv ices - Reserv ation::Partial

Reserv ation AP Generation

+ RsvWInstPct :float

+ RsvWSchdPct :Schedule

+ WSchdFutPct :Schedule

Energy Serv ices - Setpoints and

Controls::Activ e Power Control

+ WSpt :float

+ WSchd :Schedule

«abstract»

DER Model::Actual

v alues

0..1 1

1

1

1..* 1

+Controlled Part

1

+Control of reserved part

0..1

1

+Actual values for reserved part1

1..*

1

+Reservation of service or part of service

0..*

1

1 1..*

0..*

1

11

0..1

1

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LN DSPG

Rated values

Actual values

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Conclusions

◼ As a living standard shaping the future of utility automation, IEC 61850 is moving in several directions– Improving the efficiency to design and

commission substation automation systems

– …while still supporting backwards and forwards compatibility to the level required by user of the standard

– Supporting new areas to implement the smart grid

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christoph.brunner@it4power.com