05_IED Object Models

8/14/2019 05_IED Object Models

1/44

OMICRON

Page: 1K02 03 20060309

K02 03 20060309

IED Object ModelsIED Object Models

Dr. Alexander Apostolov


2/44

OMICRON Page: 2K02 03 20060309

IntroductionIntroduction

IEC 61850 is now an approvedinternational standard

It allows the development of a newgeneration of distributed applications The successful implementation

requires: Good understanding of the principles ofthe standard (No Ignorance!)

Teamwork Ambition


3/44


ObjectsObjects An object is .. a thing that can be seen and

touched; material thing that occupies space .. .Webster New World Dictionary of the American Language

In object-oriented design (OOD) an object is anabstraction of real world entities and functions in aproblem domain.

Problem Domain is the application or process that is

being modeled by Object Oriented representation(Classes and Objects) power system protectionand control.

Objects are encapsulated that is, they containboth their code and their data, making them moreeasier to maintain


4/44


Classes and ObjectsClasses and Objects

A class is a template for the creation ofobjects, the description of one or moreobjects with the same definitions forinformation and behavior.

An object is defined as an instance of a class Objects represent information and behavior :

properties (or components, attributes) Data that describe an object

services (or methods, and events) Methods are things you can tell the object to do Events are things the object does


5/44


Class ExampleClass Example


6/44


Class ExampleClass Example


7/44 OMICRON Page: 7K02 03 20060309

Class Instance ExampleClass Instance Example


8/44 OMICRON Page: 8K02 03 20060309

Classes and ObjectsClasses and Objects


9/44 OMICRON Page: 9K02 03 20060309

Substation CommunicationsSubstation Communications

Architecture ArchitectureSubstation Computer

IED IED IED

Switch

Substation HMI

Router

IED IED IED IED

Switch

SCADA Master

WAN


10/44 OMICRON Page: 10K02 03 20060309

System CommunicationsSystem Communications

Architecture Architecture

IED

Switch

Analysts

WAN

Substation 1

Substation 2

Substation i

Substation j

SubstationGateway

EMS

SCADA Server ISD

EMS

Traders

IED IED

IED


11/44 OMICRON Page: 11K02 03 20060309

Function DefinitionsFunction Definitions

Functions in the substation are performed by theprotection, control, monitoring and recordingsystem.

A function can be divided into sub-functions andfunctional elements.

The functional elements are the smallest parts of afunction that can exchange data.

These functional elements in IEC 61850 are calledLogical Nodes


12/44 OMICRON Page: 12K02 03 20060309

Logical Node GroupsLogical Node Groups

System Logical Nodes LN Group: L Logical Nodes for protection functions LN Group: P

Logical Nodes for protection related functions LNGroup: R Logical Nodes for control LN Group: C Logical nodes for generic references LN Group: G Logical Nodes for interfacing and archiving LN

Group: I Logical Nodes for automatic control LN Group: A


13/44 OMICRON Page: 13K02 03 20060309

Logical Node GroupsLogical Node Groups

Logical Nodes for metering andmeasurement LN Group: M

Logical Nodes for sensors and monitoringLN Group: S Logical Nodes for switchgear LN Group: X

Logical Nodes for instrument transformersLN Group: T Logical Nodes for power transformers LN

Group: Y Logical Nodes for further power system

equipment LN Group: Z


14/44 OMICRON Page: 14K02 03 20060309

Relay Object ModelsRelay Object Models

Object ModelsObject Models


15/44 OMICRON Page: 15K02 03 20060309

IED Functional HierarchyIED Functional HierarchyProtection

IEDDeviceIdentity

Over-current

Ground Definitetime #1 Pickup Value

Function

Function

Phase

Negat.Seq.

Inverse

time

Instant.

Time

delay

Directio-nality

Minimum

Maximum

Step

FunctionControl

Sub-FunctionControl

Device Functional HierarchyDevice Functional Hierarchy


16/44

OMICRON Page: 16K02 03 20060309

IED Functional HierarchyIED Functional Hierarchy

IEC 61850 Server ClassIEC 61850 Server Class


17/44

OMICRON Page: 17K02 03 20060309


IEC 61850 Server ClassIEC 61850 Server Class


18/44

OMICRON Page: 18K02 03 20060309


IEC 61850 Logical Device ClassIEC 61850 Logical Device Class


19/44

OMICRON Page: 19K02 03 20060309


IEC 61850 Logical Node ClassIEC 61850 Logical Node Class


20/44

OMICRON Page: 20K02 03 20060309

IEC 61850 Data ClassIEC 61850 Data Class


21/44

OMICRON Page: 21K02 03 20060309

Relay Object ModelsRelay Object ModelsPhysical Device - Server

Logical DeviceLD1 LLN0

MMXU1

PIOC1

PTOC1

RDIR1PTOC2

PIOC1

PTOC1

RDIR1

PTOC2

RREC1

Gnd

Phs

Ocp

IED 61850 Logical NodesIED 61850 Logical Nodes

l d


22/44

OMICRON Page: 22K02 03 20060309

IED FunctionalIED FunctionalHierarchyHierarchy

Physical Device

Logical DeviceLD1 LLN0

LPHD

PIOC1

PTOC1

RDIR1

PTOC2

PIOC1

PTOC1

RDIR1

PTOC2

RREC1

Gnd

Phs

LogicalNodes

Ocp

Internal Functional

Group Name(Phase OvercurrentProtection sub-function)

External FunctionalGroup Name(OvercurrentProtection function)

IED 61850 Logical NodesIED 61850 Logical Nodes

L i l N d I f iL i l N d I f i


23/44

OMICRON Page: 23K02 03 20060309

Logical Nodes InformationLogical Nodes Information

CategoriesCategories


24/44

OMICRON Page: 24K02 03 20060309

Functional ConstraintsFunctional Constraints

The property of DataAttribute that showsits use is a Functional Constraint (FC).

Some more commonly used are: CO control SP set point CF configuration DC description SG setting group MX measurements


25/44

OMICRON Page: 25K02 03 20060309

Object HierarchyObject HierarchyServer

Logical

Device

Logical

Device

Logical

Device

LogicalNode

LogicalNode

LogicalNode

Data Data Data

Data Attribute

Data Attribute

Data Attribute

d b


26/44

OMICRON Page: 26K02 03 20060309

NestedNested DataAttributesDataAttributes

DATAInstance

DataAttr DataAttr

DAComp DAComp

DAComp DAComp



27/44

OMICRON Page: 27K02 03 20060309


D t th lData path example


28/44

OMICRON Page: 28K02 03 20060309

Data path exampleData path example

MMXU1.A.phsB.cVal.mag.f MMXU1 : instance of LN class MMXU defined in

Part 7-4

A : instantiation of the Composite DATA class WYE(defined in 7-3)

phsB : value of the current in phase B as a Simple

Common DATA class of type CMV (defined in 7-3 ) cVal : is the complex value of the current in phaseB (of the Common DataAttribute type Vector)

mag

:this object represents the magnitude of the

complex value (type AnalogValue - defined in 7-3) f is a DataAttributeComponent which is of the

basic type FLOATING POINT (defined in 7-2)

C d t l fC d t l f


29/44

OMICRON Page: 29K02 03 20060309

Common data classes forCommon data classes for

measurandmeasurand informationinformation Measured value (MV) Complex measured value (CMV) Sampled value (SAV) WYE Delta (DEL) Sequence (SEQ) Harmonic value (HMV) Harmonic value for WYE (HWYE) Harmonic value for Delta (HDEL)

Metering and MeasurementMetering and Measurement


30/44

OMICRON Page: 30K02 03 20060309

Metering and MeasurementMetering and Measurement

Logical NodesLogical Nodes Differential measurements Name: MDIF

Harmonics or interharmonics Name: MHAI Non phase related harmonics or interharmonicsName: MHAN

Metering Name: MMTR Non phase related Measurement Name: MMXN Measurement Name: MMXU Sequence & imbalance Name: MSQI

Metering Statistics Name: MSTA

Measured values attributes inMeasured values attributes in


31/44

OMICRON Page: 31K02 03 20060309

Measured values attributes inMeasured values attributes in

MMXUMMXUName Type DescriptionPPV DEL Phase to phase voltagesPhV WYE Phase to ground voltages

A WYE Phase currentsW WYE Phase active power (P)VAr WYEPhase reactive power (Q)

VA WYE Phase apparent power (S)TotW MV Total Active Power (Total P)TotVAr MV Total Reactive Power (Total Q)TotVA MV Total Apparent Power (Total S)TotPF MV Average Power factor (Total PF)Hz MV FrequencyPF WYE Phase power factor

Z WYE Phase Impedance

Protection Logical NodesProtection Logical Nodes


32/44

OMICRON Page: 32K02 03 20060309

gg



33/44

OMICRON Page: 33K02 03 20060309


Logical Nodes DataLogical Nodes Data


34/44

OMICRON Page: 34K02 03 20060309

Logical Nodes DataLogical Nodes Data

Setting DataSetting Data


35/44

OMICRON Page: 35K02 03 20060309

Setting DataSetting Data

Overcurrent Protection LNOvercurrent Protection LN


36/44

OMICRON Page: 36K02 03 20060309

PTOCPTOC

Setting AttributesSetting Attributes


37/44

OMICRON Page: 37K02 03 20060309

Setting AttributesSetting Attributes

ServicesServices


38/44

OMICRON Page: 38K02 03 20060309

ServicesServices

Distributed ApplicationsDistributed Applications


39/44

OMICRON Page: 39K02 03 20060309

Distributed ApplicationsDistributed Applications

PD2

LNn

LD1

F2

PD1

LN4

LNn

LD1

F1

F3

LN1

LN2

LN3

LN4

LN1

LN2

LN3

Measuring FunctionsMeasuring Functions


40/44

OMICRON Page: 40K02 03 20060309

Measuring FunctionsMeasuring Functions

DecompositionDecomposition

IARC IHMI

MMTR MMXU

TVTR TCTR

SubstationLevel

BayLevel

ProcessLevel

Multifunctional IED ObjectMultifunctional IED Object


41/44

OMICRON Page: 41K02 03 20060309


ModelModelServer

LD1

LD2

LD3

LD4

LD5

LD6



42/44

OMICRON Page: 42K02 03 20060309


ModelModelServer

LN1

LN2

LN3

LN4

LNn

LD1



43/44

OMICRON Page: 43K02 03 20060309


ModelModelPQM IED

LN(i)

MMXU1

LD1

MMTR1

MMHI1

MSTA1

MMXU2MMHI2

MSTA2

HV

MV

hv

mv

Multifunctional IED Object ModelMultifunctional IED Object Model


44/44

OMICRON Page: 44K02 03 20060309

BiTRONICS M871 LLNO

MMXU1

MMTR1

MHAI1

MSQI1

MMXU2

MMHI2

MSQI2

HV

MV

dmd prs

LPHD DIAG1

RATO1

RWRE1 RDRE1 RDRE2 Recorder Controls

GCTL1

GIND1

RATO2

MMXU1

MMXU2

AMXU1

minMMXU1MMXU2

max MMXU1

MMXU2

AMXU1MMXU3

RATO3

RSYN1

RSYN2

RSYN3

Documents

05_IED Object Models