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-> home > news > IEC 61850 Edition 2 and other extension - status 2008-06


IEC 61850 Edition 2 and other extensions

Status updated 2008-06-19

IEC 61850 is growing. Edition 2 and other extensions are under way or are already published.

The Edition 2 of the standards series IEC 61850 is under preparation. First documents have been published recently:

First committee drafts for vote (CDVs) of IEC 61850 Edition 2 published:

- Part 6 (57/919/CDV) - Configuration description language (SCL) (ballot closes: 2008-07-11)
- Part 7-1 (57/942/CDV) - Basic communication structure - Principles and models (ballot closes: 2008-10-10)
- Part 7-2 (57/945/CDV) - Abstract communication service interface (ACSI) (ballot closes: 2008-10-24)
- Part 7-3 (57/953/CDV) - Common data classes (ballot closes: 2008-11-07)
- Part 7-4 (57/941/CDV) - Compatible logical node classes and data classes (ballot closes: 2008-10-10)

Contact your national committee of TC 57 to get a copy to review the documents and to provide comments. (2008-06-11)

New drafts for vote (CDVs) of IEC 61400-25 Communications for monitoring and control of wind power plants published:

- Part 25-4 (88/318/FDIS) - Mapping to communication profile (ballot closes: 2008-08-01)
- Part 25-6 (88/316/CDV) - Logical nodes and data for condition monitoring (ballot closes: 2008-10-03)

Contact your national committee of TC 88 to get a copy to review the documents and to provide comments. (2008-06-11)

The information models (many new logical nodes and data objects) are growing very fast ... 3 times more logical nodes and 4 times more data objects since 2004:

IEC 61850 (2008-05)

  • 260 Logical Nodes
  • 1.600 Data Objects

IEC 61400-25 (2008-05)

  • 6 Logical Nodes
  • 270 Data Objects

IEC 62351-7 (2008-04)

  • 150 Data Objects

Total (2008-05)

  • 275 Logical Nodes (90 in 2003)
  • 2.000 Data Objects (500 in 2003)

A list of more details and the current status of standardization can be downloaded here [pdf, 467 KB].

IEC 61850

Part 6 (57/919/CDV) - Configuration description language (SCL)

The edition 2 of this standard:

  • Has functional extensions based on changes in other parts, especially part 7-2
  • Has functional extensions concerning the engineering process, especially for configuration data exchange between system configuration tools.
  • Provides clarifications and corrections to the published edition 1 of IEC 61850-6. Issues that require clarification are published in a database.

Part 7-1 (57/942/CDV) - Basic communication structure - Principles and models

The edition 2 of this standard:

  • Provides some more examples and it is more consistent with the other parts 7-x.

Part 7-2 (57/945/CDV) - Abstract communication service interface (ACSI)

The edition 2 of this standard:

  • Uses a more general modeling approach for the data object models.
  • Introduces the Service tracking model to allow reporting and logging of all service responses. E.g., changing the value of the report enable attribute of a control block could be logged. This was already supported by the various functional constraints (FC) of the control blocks and the TrgOp of the control blocks.
  • Provides clarifications and corrections to the published edition 1 of IEC 61850-7-2. Issues that require clarification are published in a database.
  • Is more consistent with the other parts 7-x and 8-1.

Part 7-3 (57/953/CDV) - Common data classes

The edition 2 of this standard:

  • Provides several new common data classes
  • Provides clarifications and corrections to the published edition 1 of IEC 61850-7-3. Issues that require clarification are published in a database.

Part 7-4 (57/941/CDV) - Compatible logical node classes and data classes

The edition 2 of this standard:

  • Provides several new logical node and data classes
  • Provides clarifications and corrections to the published edition 1 of IEC 61850-7-4. Issues that require clarification are published in a database.

IEC 61400-25

Part 25-4 (88/318/FDIS) - Mapping to communication profile

The FDIS provides five optional mappings for IEC 61400-25-3 (IEC 6850-7-2)

Part 25-6 (88/316/CDV) - Logical nodes and data for condition monitoring

The CDV provides logical node and data classes for condition monitoring for wind power turbines.

IEC 61400-25 defines information models and information exchange models for monitoring and control of wind power plants. The modelling approach (for information models and information exchange models) of IEC 61400-25-2 and IEC 61400-25-3 uses abstract definitions of classes and services such that the specifications are independent of specific communication protocol stacks, implementations, and operating systems. The mapping of these abstract definitions to specific communication profiles is defined in IEC 61400-25-4.

Conformance to IEC 61400-25-6 requires in principle conformance to IEC 61400 -25-2, IEC 61400-25-3 and IEC 61400-25-4.

The definitions in parts IEC 61400-25-1 to IEC 61400-25-5 apply also for this part 6 of the standard series.

The purpose of this part is to define an information model for condition monitoring information and to define how to use the existing definitions of part IEC 61400-25-2 and to define the required extensions in order to describe and exchange information related to condition monitoring of wind turbines. The models of condition monitoring information defined in this standard may represent information provided by sensors or by calculation.

In the context of this standard condition monitoring means a process with the purpose of observing components or structures of a wind turbine or wind power plant for a period of time in order to evaluate the state of the components or structures and any changes to it, in order to detect early signs of impending failure.

Condition monitoring is most frequently used as a Predictive or Condition-Based Maintenance technique (CBM). However, there are other predictive maintenance techniques that can also be used, including the use of the Human Senses (look, listen, feel, smell) or Machine Performance Monitoring techniques. These could be considered to be part of the condition monitoring.


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Our seminars and training cover all aspects of IEC 61850 ... also wind and hydro power plants:

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19.06.2008


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