introduction to iec 62361-102 cim - 61850 harmonization 2019...confidential property of schneider...

Introduction to

IEC 62361-102 CIM - 61850 HarmonizationDraft for Paper 1368 CIRED 2019

Confidential Property of Schneider Electric

Tom Berry

Schneider Electric

Agenda

Confidential Property of Schneider Electric |

Problem

Definitions

Approach

Use case

Containers and Equipment

Measurements

Settings

Further work


For historical reasons, IEC standards are based on several different models:

• IEC 61850 for substation automation and other device level applications

• Common Information Model CIM (IEC 61970, IEC 61968, IEC 62325) for control centre

applications

• Companion Specification for Energy Metering (COSEM) for metering

Reference: IEC 62357-1 TR: Power systems management and associated information exchange –

Part 1: Reference architecture

The Problem #1Power systems are complex – multiple groups have worked on different aspects


The Problem #2Data models and harmonization

1 2

3

Scope of IEC 62361-102

IEC 61970-301 CIM Base ("Wires")

IEC 61968-11 Distribution Management

IEC 62325-301 Markets

IEC 61850-7-4 Substation, Feeder

IEC 61850-7-410 Hydro-electric

IEC 61850-7-420 DER

…

IEC 61850-80-4

IEC 62056

IEC 62056-6-9


Features

• Hierarchal data model

• System Configuration Language (SCL)

• Abstract Communication Services

• Specific communication technologies• Client-server services

• High speed events

• Sampled values

• Mappings to IEC 60870-5-104

or IEEE1815 (DNP)

• …

IEC 61850 Communication Networks and Systems for Power Utility Automation

Design aim: inter-operability for communication between field devices


• “an abstract model that represents all the

major objects in an electric utility enterprise

typically needed to model the operational

aspects of a utility … as well as the

relationships between them”

• IEC 61970-301 defines the CIM Base set of

packages … functional aspects of an

Energy Management System including

SCADA

• Typical application - state estimation

Common Information ModelDesign aim: facilitates the integration of EMS, DMS and other control centre applications


• Define a short list of use cases that link control center applications and substation automation

• Fundamental use case : Configuration of real time communication between substations and control

centres

‒ Extends the top-down engineering process described in IEC 61850 part 4 and 6

‒ Adds steps related to the network models within SCADA/EMS/DMS in the control centre

• Define mapping between the two models

• Identify where the models overlap, and where they are different

• Make recommendations for revisions to reduce ambiguities and make transformations easier

ApproachOne use case at a time …


1. Planning department produces requirements

2. IEC 61850 System Integrator

• Defines formal electrical model and export as System Specification Description (SSD) file

• Imports capability descriptions for Intelligent Electronic Devices (IEDs) and links to the electrical model

• Defines the communication configuration and export as System Configuration Description (SCD) file.

3. Network model manager

• Transforms into a CIM based modelling tool for review

• Adds any additional CIM information

• Applies incremental update for the SCADA/EMS/DMS control centre systems

4. Commissioning - verify all the communications

Use case – principal actors and main stepsConfiguration of real time communication


• WHERE is the measurement, WHAT does it mean

• IEC 62361-102 CIM - 61850 Harmonization (scope of this presentation)

• HOW, WHEN, WHY

• IEC 61850-90-2: Using IEC 61850 for communication between substations and control centres

• IEC 61850-80-1: Guideline to exchanging information from a CDC-based data model using IEC 60870-

5-101 or IEC 60870-5-104

• IEEE 1815.1 - Standard for exchanging Information between networks implementing IEC 61850 and

IEEE Std 1815™ [Distributed Network Protocol (DNP3)]

Use case – scope of the standardsConfiguration of real time communication


Substation

= IEC 61850

Data Flows

Real Time

Configuration #1

= Equipment

Configuration #2

+ Logical Nodes

= Measurements

Control Centre

= CIM

.


SCL: “a file format for describing communication and parameters related to IED (Intelligent Electronic Device)

configurations, communication system configurations, switchyard (function) structures, and the relations

between them” [IEC 61850-6]

Specific subsets of the language are used for configuring a system or configuring individual IEDs.

Sections in an SCL file

• Substation / Line / Process identifies the equipment and associations to Logical Nodes in the IEDs

• IED Descriptions the logical nodes within each physical IED

• Communications connections between IEDs

• Data Type Templates details of the data models

IEC 61850 System Configuration description Language (SCL).

Substation equipment identification and one line

connectivity description has a similar business

requirement within IEC 61850 based system

engineering tools and within CIM based

network engineering tools.

The mapping to CIM should be possible from a

SSD description before any IEDs or Logical

Nodes Types have been defined.

SCL defines equipment type codes

CIM defines equipment type classes

Recommendation R2: The list of device type

codes … should be extended to correspond

better with the Common Information Model


Containers & Equipment identifiersSCL Substation section

class Equipment_Mapping

tPowerSystemResource

tConductingEquipment

- type

tEquipment

tAbstractConductingEquipment

tNaming

- name :tName

- desc :string

tLNodeContainer

SCL Equipment identification

CIM::

PowerSystemResource

CIM::IdentifiedObject

- mRID :string

- name :string

CIM::

ConductingEquipment

CIM::Equipment

CIM::Breaker

CIM Equipment Identification

IEC 61850 Logical Node = a group of data

objects (status, measurements controls,

settings, description)

CIM and traditional SCADA protocols use data

points with a value, quality and time

IEC 61850 allows systems to be designed and

configured using fewer but more complex

objects

Some data objects in some types of logical node

correspond with CIM measurements


Status, Measurements and ControlsDescribed in the IED and Data Type Template sections

class Measurement_Mapping

tPowerSystemResource

tConductingEquipment

- type

tEquipment

tAbstractConductingEquipment

tNaming

- name :tName

- desc :string

tLNodeContainer

LogicalNode

DataObject

DataAttribute

LogicalDev ice

IED

SCL Status, Control

and Settings data

SCL Equipment identification

CIM::Measurement

CIM::

PowerSystemResource

CIM::IdentifiedObject

- mRID :string

- name :string

CIM::

ConductingEquipment

CIM::Equipment

CIM::RemoteSource

CIM::RemotePoint

CIM::RemoteUnit

CIM::

MeasurementValue

CIM::DiscreteValue

CIM::Discrete

CIM::Breaker

CIM Equipment IdentificationCIM Measurement Data


Logical Nodes

IEC 61850-7-4

Node Description

IEC 61850-5

Associated CIM Classes

MMXU Calculation of currents, voltages, powers and

impedances in a three-phase system.

Several instances of Analog

PIOC, PTOC Instantaneous over-current, time over-current CurrentRelay

(a subtype of ProtectionEquipment)

XCBR, CSWI, SCBR The LN “circuit breaker” covers all kind of circuit

breakers, able to interrupt short circuits

Breaker

XSWI, CSWI, SSWI The LN “switch” covers all kind of switching devices not

able to switch short circuits

Switch, Disconnector, Jumper

LoadBreakSwitch

GroundDisconnector

YLTC, ATCC, SLTC,

AVCO

Transformer tap changer, automatic tap change

controller, tap changer supervision, automatic voltage

controller

TapChanger

RatioTapChanger

PhaseTapChanger

others

ZCAP, ARCO, AVCO ARCO controls reactive power flow

AVCO controls voltage

ShuntCompensator

SeriesCompensator

ZGEN, AVCO Information exchange with generators GeneratingUnit

ZSMC Holds rating data for any type of synchronous machine. SynchronousMachine

Mapping Logical Nodes: example


Logical

Node

Data

Object

Data

Class

Description IEC 61970-301 or

IEC 61970-452

MeasurementType

Subclass of CIM

Measurement

MMXU TotW MV Total real power in a three

phase circuit

ThreePhaseActivePower Analog

MMXU TotVAr MV Total reactive power in a three

phase circuit

ThreePhaseReactivePower Analog

MMXU A WYE Phase currents

(magnitude and angle)

LineCurrent or PhaseCurrent

Angle

3 or more instances

of Analog

MMXU PhV WYE Phase to ground voltages

(magnitude and angle)

PhaseVoltage

Angle

3 or more instances

of Analog

CSWI,

XCBR,

XSWI

Pos DPC Switch position

[2 bits= intermediate, open,

closed, bad-state]

SwitchPosition Discrete

ARCO,

ATCC,

AVCO

Auto SPC Automatic/Manual operation Automatic Discrete

Mapping Data Objects for Status and MeasurementsIEC 61850-7-4 defines over 600 status or measurement data objects

IEC 61970-301 and -452 define only 19 standard MeasurementTypes


Recommendation R13: CIM based standards should use selected IEC 61850 data object names as

MeasurementType names.

OR

Recommendation R14: [Alternative to R13] add a new attribute in the CIM Measurement class called

IEC 61850 DataObject, which is an enumeration and the value will be any data object that is defined

in IEC 61850

Mapping other Data Objects.


Some settings in IEC 61850 have direct equivalents in the CIM

Example: logical node ATCC Automatic tap changer controller

Mapping Data Objects for SettingsOptionally defined in SCL, or via real-time communications if supported by the IED

Data object Description CIM Class Attribute

BndCtr (ATCC) Centre of voltage control bandwidth

(forward power flow presumed).

RegulatingControl targetValue

targetValueUnitMultiplier

BndWid (ATCC) Control (secondary) voltage bandwidth

(i.e., range), given either as voltage value or

percentage of the nominal voltage (forward power

flow presumed).

RegulatingControl targetDeadband

CtlDlTmms (ATCC) Time to wait before operating, after

reaching the control point (forward power flow

presumed).

TapChanger initialDelay

subsequentDelay


• Complete – mapping IEC 61850-7-4 LNs (groups A,C,S,X,Y,Z) to CIM classes

• Real time data objects & attributes

• Settings data objects and attributes

• Work-in-progress – Extend mappings with Logical Nodes for (groups D, M, W, more P, S, Z)

• IEC 61850-7-410 Hydro-electric & thermal power plants

• IEC 61850-7-420 Distributed Energy Resources

• IEC 61850-90-3 Condition Monitoring

• IEC 61850-90-6 Distribution Automation Systems

• …

Further work


IEEE 1547 Data Requirement IEC 61850 -7-420 CIM Class Attribute or type

Active power rating at unity power factor

(nameplate active power rating)

DGEN.WMaxRtg GeneratingUnit

PowerElectronicsUnit

EquivalentInjection

ratedNetMaxP

maxP

maxP

Apparent Power Maximum Rating DGEN.VAMaxRtg PowerElectronicsConnection

RotatingMachine

ratedS

Reactive Power Injected Maximum Rating DGEN.IvarMaxRtg SynchronousMachine

PowerElectronicsConnection

EquivalentInjection

maxQ

Reactive Power Absorbed Maximum Rating DGEN.AvarMaxRtg SynchronousMachine

PowerElectronicsConnection

EquivalentInjection

minQ

Active Power Charge Maximum Rating DSTO.ChaWMaxRtg PowerElectronicsUnit minP

Apparent Power Charge Maximum Rating DSTO.ChaVAMaxRtg PowerElectronicsConnection

RotatingMachine

ratedS

AC voltage nominal rating DECP.VRef PowerElectronicsConnection

RotatingMachine

ratedU

ratedU

Further Work: Distributed Energy ResourcesDraft IEC 61850-7-420 Ed 2 is consistent with IEEE P1547. CIM model is incomplete


Further Work: re-evaluate the CIM Protection Model … use the same protection functions as IEC 61850

class Protection_Ov erCurrent

PTOC PTOV

Equipment

CIM::ProtectionEquipment

Switch

CIM::ProtectedSwitch

CIM::Recloser

IdentifiedObject

CIM::RecloseSequence

CIM::Breaker

CIM::LogicalNode

ProtectionEquipment includes

functionality of logical node PTRC

for combining the outputs of

individual protection functions to

produce a single trip status

PTOF

PDIS

PTOC Over current

PTOV Over voltage

PTOF Over frequency

PDIS Distance protection

RDIR Direction settings

etc

P...RDIR

1..*

0..* 0..*

introduction to iec 62361-102 cim - 61850 harmonization 2019...confidential property of schneider...

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