Wind energy generation systems - Part 25-71: Communications for monitoring and control of wind power plants - Configuration description language

IEC TS 61400-25-71:2019 focus on the communications between wind power plant components such as wind turbines and actors such as SCADA systems. Non­-IEC 61850/IEC 61400-25 internal communication within wind power plant components is outside the normative scope of the IEC 61400-25 series.
This document describes how to extend the IEC 61400-25 series with the IEC 61850­6 Substation Configuration description Language (SCL) file format for describing communication­-related Intelligent Electronic Device (IED) configurations of a wind turbine, wind power plant controller, meteorological mast, etc. The extension of SCL to the wind domain is intended to simplify integration of wind power plant equipment for clients, as well as their integration to the electrical system. The adoption of SCL allows formalised tool-based exchange of IED parameters, communication system configurations, switch yard (function) structures, as well as description of the relations between them.
The purpose of this format is to formally and efficiently exchange wind turbine and wind power plant IED capability descriptions, and system descriptions between IED engineering tools and the system engineering tool(s) of different manufacturers in a compatible way. The file format is also intended to provide report configuration and alarms as well as HMI interface information from a wind power plant. This information can be used to engineer overlying SCADA systems for the site, for connected DSO, or TSO, or for fleet operators' maintenance and surveillance systems. Finally, the SCL is intended as a documentation of the configuration and topology of the delivered system.

General Information

Status
Published
Publication Date
12-Sep-2019
Current Stage
PPUB - Publication issued
Completion Date
13-Sep-2019
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IEC TS 61400-25-71
Edition 1.0 2019-09
TECHNICAL
SPECIFICATION
colour
inside
Wind energy generation systems –
Part 25-71: Communications for monitoring and control of wind power plants –
Configuration description language
IEC TS 61400-25-71:2019-09(en)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC TS 61400-25-71
Edition 1.0 2019-09
TECHNICAL
SPECIFICATION
colour
inside
Wind energy generation systems –
Part 25-71: Communications for monitoring and control of wind power plants –
Configuration description language
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.180 ISBN 978-2-8322-7392-0

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 2 – IEC TS 61400-25-71:2019  IEC 2019
CONTENTS

FOREWORD ........................................................................................................................... 4

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 6

3 Terms and definitions ...................................................................................................... 7

4 Abbreviated terms ........................................................................................................... 8

5 SCL introduction .............................................................................................................. 9

5.1 General ................................................................................................................... 9

5.2 SCL sections ........................................................................................................ 10

5.3 SCL file types ....................................................................................................... 12

5.4 SCL tools .............................................................................................................. 13

6 SCL use cases in the wind power domain ...................................................................... 14

6.1 General ................................................................................................................. 14

6.2 IED level interface server configuration ................................................................. 15

6.2.1 General ......................................................................................................... 15

6.2.2 Configuration process .................................................................................... 16

6.3 WPPS level interface server configuration ............................................................ 16

6.3.1 General ......................................................................................................... 16

6.3.2 Configuration process .................................................................................... 18

6.4 Client data flow definition ...................................................................................... 18

6.4.1 General ......................................................................................................... 18

6.4.2 Configuration process .................................................................................... 19

6.5 Topology definition ................................................................................................ 21

6.5.1 General ......................................................................................................... 21

6.5.2 SCL components used to define the topology ................................................ 21

6.5.3 Configuration process .................................................................................... 24

7 Mapping specific configuration ....................................................................................... 24

7.1 General ................................................................................................................. 24

7.2 Web Services mapping configuration parameters – WS communication

parameters ........................................................................................................... 24

7.3 MMS mapping configuration parameters ............................................................... 25

7.3.1 MMS communication configuration parameters .............................................. 25

7.3.2 MMS extension data types configuration ........................................................ 25

7.4 IEC 60870-5-101/104 mapping configuration parameters ...................................... 26

7.4.1 IEC 60870-5-101/104 communication parameters .......................................... 26

7.4.2 IEC 60870-5-101/104 addressing ................................................................... 28

7.5 DNP3 specific mapping configuration parameters ................................................. 29

7.5.1 DNP3 communication parameters .................................................................. 29

7.5.2 DNP3 addressing ........................................................................................... 31

7.6 OPC UA mapping configuration parameters – OPC UA communication

parameters ........................................................................................................... 32

Annex A (informative) SCL schema extensions for its use within IEC 61400-25

projects ................................................................................................................................. 33

A.1 General ................................................................................................................. 33

A.2 Extensions in the DataTypeTemplates section ...................................................... 33

A.2.1 tCdcEnum ...................................................................................................... 33

A.2.2 tBasicTypeEnum ............................................................................................ 33

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IEC TS 61400-25-71:2019  IEC 2019 – 3 –

A.3 Extensions in the Process section ......................................................................... 33

A.3.1 tProcess ........................................................................................................ 33

A.3.2 ref2SubstationFromTerminal .......................................................................... 33

A.4 Extensions in the Communication section – tPTypeEnum...................................... 33

Annex B (normative) SCL schema for IEC 61400-25 ............................................................ 34

Annex C (informative) Configuration examples ..................................................................... 82

C.1 General ................................................................................................................. 82

C.2 Wind power plant configuration with IEC 61400-25 interface at wind turbine

level ...................................................................................................................... 83

C.3 Wind power plant configuration with IEC 61400-25 interface at WPPS .................. 84

Bibliography .......................................................................................................................... 86

Figure 1 – Example with several IEDs ................................................................................... 15

Figure 2 – Configuration diagram .......................................................................................... 16

Figure 3 – Example with only one IED as WPPS ................................................................... 17

Figure 4 – WPPS logical node allocation ............................................................................... 17

Figure 5 – Report data flow configuration .............................................................................. 18

Figure 6 – Data flow configuration using several ICD/CID/IID files as input ........................... 19

Figure 7 – Data flow configuration using a SCD file as input ................................................. 20

Figure 8 – Electrical connection using Line and Segments .................................................... 22

Figure 9 – Example of substation connectivity ....................................................................... 23

Figure C.1 – WPP topology ................................................................................................... 82

Figure C.2 – WPP Server interface ....................................................................................... 84

Table 1 – WS specific communication configuration parameters ........................................... 24

Table 2 – MMS specific communication configuration parameters ......................................... 25

Table 3 – IEC 60870-5-101 specific communication configuration parameters ...................... 26

Table 4 – IEC 60870-5-104 specific communication configuration parameters ...................... 27

Table 5 – IEC 60870-5-104 redundancy group configuration parameters............................... 27

Table 6 – IEC 60870-5-101/104 point mapping attributes ...................................................... 29

Table 7 – DNP3 configuration parameters ............................................................................. 29

Table 8 – DNP3 networking communication configuration parameters ................................... 30

Table 9 – DNP3 serial communication configuration parameters ........................................... 30

Table 10 – DNP3 point mapping attributes ............................................................................ 32

Table 11 – OPC UA specific communication configuration parameters .................................. 32

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– 4 – IEC TS 61400-25-71:2019  IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
WIND ENERGY GENERATION SYSTEMS –
Part 25-71: Communications for monitoring and control
of wind power plants – Configuration description language
FOREWORD

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Technical Specifications are subject to review within three years of publication to decide

whether they can be transformed into International Standards.

Technical Specification IEC 61400-25-71 has been prepared by IEC technical committees

TC 88: Wind energy generation systems and TC 57: Power systems management and
associated information exchange.
---------------------- Page: 6 ----------------------
IEC TS 61400-25-71:2019  IEC 2019 – 5 –
The text of this Technical Specification is based on the following documents:
Draft TS Report on voting
88/706/DTS 88/715A/RVDTS

Full information on the voting for the approval of this Technical Specification can be found in

the report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts in the IEC 61400 series, published under the general title Wind energy

generation systems, can be found on the IEC website.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• transformed into an International standard,
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates

that it contains colours which are considered to be useful for the correct

understanding of its contents. Users should therefore print this document using a

colour printer.
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– 6 – IEC TS 61400-25-71:2019  IEC 2019
WIND ENERGY GENERATION SYSTEMS –
Part 25-71: Communications for monitoring and control
of wind power plants – Configuration description language
1 Scope

The focus of the IEC 61400-25 series is on the communications between wind power plant

components such as wind turbines and actors such as SCADA systems.

Non-IEC 61850/IEC 61400-25 internal communication within wind power plant components is

outside the normative scope of the IEC 61400-25 series.

This document describes how to extend the IEC 61400-25 series with the IEC 61850-6

Substation Configuration description Language (SCL) file format for describing

communication-related Intelligent Electronic Device (IED) configurations of a wind turbine,

wind power plant controller, meteorological mast, etc. The extension of SCL to the wind

domain is intended to simplify integration of wind power plant equipment for clients, as well as

their integration to the electrical system. The adoption of SCL allows formalised tool-based

exchange of IED parameters, communication system configurations, switch yard (function)

structures, as well as description of the relations between them.

The purpose of this format is to formally and efficiently exchange wind turbine and wind power

plant IED capability descriptions, and system descriptions between IED engineering tools and

the system engineering tool(s) of different manufacturers in a compatible way. The file format

is also intended to provide report configuration and alarms as well as HMI interface

information from a wind power plant. This information can be used to engineer overlying

SCADA systems for the site, for connected DSO, or TSO, or for fleet operators' maintenance

and surveillance systems. Finally, the SCL is intended as a documentation of the
configuration and topology of the delivered system.

The System Configuration description Language (SCL) is defined in IEC 61850-6, which in

turn is based on Extensible Markup Language (XML) version 1.0. Extensions to the IED and

communication system model in SCL to cover IEC 61400-25-2 are included in this document.

Also Specific Communication Service Mapping (SCSM) extensions or usage rules to cover all

mappings defined in IEC 61400-25-4 and IEC 61400-25-41 are included in this document.

This document does not specify individual implementations or products using the SCL

language, nor does it constrain the implementation of entities and interfaces within a

computer system. Further this document does not intend to specify the download format of

configuration data to an IED, although the SCL format could be used as part of the

configuration data.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their

content constitutes requirements of this document. For dated references, only the edition

cited applies. For undated references, the latest edition of the referenced document (including

any amendments) applies.
____________
Under consideration.
---------------------- Page: 8 ----------------------
IEC TS 61400-25-71:2019  IEC 2019 – 7 –
IEC 61400-25-1, Wind energy generation systems – Part 25-1: Communications for

monitoring and control of wind power plants – Overall description of principles and models

IEC 61400-25-2, Wind turbines – Part 25-2: Communications for monitoring and control of

wind power plants – Information models

IEC 61400-25-3, Wind turbines – Part 25-3: Communications for monitoring and control of

wind power plants – Information exchange models

IEC 61400-25-4:2016, Wind energy generation systems – Part 25-4: Communications for

monitoring and control of wind power plants – Mapping to communication profile

IEC 61400-25-6, Wind energy generation systems – Part 25-6: Communications for monitoring

and control of wind power plants – Logical node classes and data classes for condition

monitoring

IEC 61850-5, Communication networks and systems for power utility automation – Part 5:

Communication requirements for functions and device models

IEC 61850-6:2018, Communication networks and systems for power utility automation –

Part 6: Configuration description language for communication in electrical substation related

to IEDs

IEC 61850-7-1, Communication networks and systems for power utility automation – Part 7-1:

Basic communication structure – Principles and models

IEC 61850-7-2, Communication networks and systems for power utility automation – Part 7-2:

Basic information and communication structure – Abstract communication service interface

(ACSI)

IEC 61850-7-3, Communication networks and systems for power utility automation – Part 7-3:

Basic communication structure – Common data classes

IEC 61850-7-4, Communication networks and systems for power utility automation – Part 7-4:

Basic communication structure – Compatible logical node classes and data object classes

IEC 61850-8-1, Communication networks and systems for power utility automation – Part 8-1:

Specific communication service mapping (SCSM) – Mappings to MMS (ISO 9506-1 and
ISO 9506-2) and to ISO/IEC 8802-3
3 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 61400-25-1 and the

following apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
extensible
ability to include terms from other vocabularies

Note 1 to entry: This is fulfilled in SCL if the other vocabularies come with their own XML name space.

---------------------- Page: 9 ----------------------
– 8 – IEC TS 61400-25-71:2019  IEC 2019
3.2
language
identifiable set of vocabulary terms that has defined constraints

Note 1 to entry: This is the case with SCL, although some constraints are not definable in the XML schema.

3.3
instance
realization by usage of a language

Note 1 to entry: For example, an XML document in SCL describing an IED or a substation is an SCL instance.

3.4
project
system part with engineering responsibility for all contained IEDs

Note 1 to entry: In general, a system is a project. However, sometimes the IED engineering responsibility for

different components of a system belongs to different parties or people. Each IED responsibility area is then a

separate project. An IED can belong to one project only. It is 'owned' by that project.

3.5
backwards compatible

ability of newer receivers to process all instances of the old language in the context of a

language change

Note 1 to entry: For SCL this means that tools built for newer language versions can understand instances from

older versions. System tools in particular should understand old ICD and SSD files, while IED tools should

understand old SCD files to be backward compatible.
3.6
language version
version of the IEC 61850-6 XML schema defining the language

Note 1 to entry: A language instance is produced according to a language (schema) version, which is called its

assigned version, although it may also be valid against other language versions.
4 Abbreviated terms
DSO Distribution system operator
IED Intelligent electronic devices
SAS Substation automated system
SCADA Supervision control and data acquisition
SCSM Specific communication service mapping
TSO Transmission system operator
WPP Wind power plant
WPPC Wind power plant controller
WPPS Wind power plant server
WS Web services
WT Wind turbine
WTC Wind turbine controller
XSD XML schema definition
XML eXtensible markup language
---------------------- Page: 10 ----------------------
IEC TS 61400-25-71:2019  IEC 2019 – 9 –
5 SCL introduction
5.1 General

IEC 61850-6 specifies a description language for the configuration of power utility IEDs. This

language is called System Configuration description Language (SCL) and shall be referred to

as basis for use of SCL within the wind domain. The configuration language is based on

Extensible Markup Language (XML) version 1.0.
The scope of SCL is focused on these purposes:
1) system functional specification,
2) IED capability description, and
3) system description.

These purposes shall provide standardized support to system design, communication

engineering and to the description of readily engineered system communication for device

engineering tools.

This is reached by defining an object model describing the IEDs, their communication

connections, and their allocation to the process or single-line diagram, as well as a

standardized way to describe how this model shall be represented in a file to be exchanged

between engineering tools.

SCL can be used to describe IED configurations and communication systems in accordance

with IEC 61850-5 and with the IEC 61850-7 series, for electrical equipment in the wind power

plant components, as well as to describe IED configurations and communication systems in

accordance with IEC 61400-25-2. It allows the formal description of the relations between the

wind power plant and actors such as SCADA systems, relations to electrical components

within a wind power plant, as well as the relation to the utility automation system and process

or single-line diagrams.

At the application level, the electrical topology itself and the relation of the electrical topology

to the logical nodes configured on the IEDs can be described.

SCL allows the description of an IED configuration to be passed to a communication and

application system engineering tool, and to create the whole system configuration description

in a compatible way. Its main purpose is to allow the interoperable exchange of
communication and configuration data between tools and different actors.

IEC 61850-6 specifies a file format for describing communication-related IED configurations

and IED parameters, communication system configurations, single-line diagrams, processes

and the relations among them.
The IED and communication system model in SCL is in accordance with IEC 61850-5,

IEC 61850-7-3 and IEC 61850-7-4. Specific to components of the wind power plant, the

communication system model is in accordance with IEC 61400-25-2, IEC 61400-25-3 and

IEC 61400-25-6. Services are described in SCL following requirements in IEC 61850-6 and

IEC 61850-7-2, following the generic principles outlined also in IEC 61850-7-1.

Specific Communication Service Mapping (SCSM) extensions for mapping to the supported

protocols in IEC 61400-25-4 and IEC 61400-25-41 are described in this document.

Engineering may start either with the allocation of pre-configured devices to wind power

plants, or with the design of the wind power plant functionality, where functions (logical

nodes) are allocated to physical devices later, based on the functional capabilities of devices

and their configuration capabilities.
---------------------- Page: 11 ----------------------
– 10 – IEC TS 61400-25-71:2019  IEC 2019

Often a mixed approach to engineering is preferred: a process part such as a single-line

diagram is pre-engineered, and then the result is used within the process functionality as the

IEDs are configured and added to the system configuration description.
For SCL, t
...

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