WG10 Future Work #5933

Proposal of a new LN class ASWI

Added by Vladan Cvejic almost 2 years ago. Updated 6 months ago.

Start date:
Due date:
12/31/2022 (about 19 months late)
% Done:


Estimated time:
FNN Germany
TF Unique ID:
WG10 Proposal:
Discuss in Upcoming Meeting:
Short Proposal:

IEC 61850-7-4

Needs More Information:
Assigned TF:
61850-7-4, 61850-90-6 - feeder automation
Target edition:


This is to register a user requirement for a new LN class ASWI, independent from ASEQ LN class proposed in IEC/TR 61850-90-14 which is intended to model FACTS and HVDC Automatic Sequencer.

ASWI LN class should model an execution scheme of a series of switchgear controls. Once activated by a DOns control, it will go through a configured list of 1 … n individual switchgear controls (CSWI.Pos), with associated ctlVal for the intended switching directions, and will execute them one after the other. The successful execution of the actual step shall be the precondition for executing the next one.

Option: It should be possible to select the execution sequence (forward/backward) using the common ctlVal of the DOns control. In backward mode the ctlVal for the individual controls should be inverted.

Proposal descriptions

The proposal is to enhance the definiton of ASWI LN allowing multi equipment controlled by CSWI changind the presence condition of OpOpn, OpCls, SelOpn and SelCls data objects.
The work will be address in IEC 61850-7-4 Ed.3 as 90-6 TR LN definition is plan to be moved to this standard.

Related issues

Copied from IEC 61850 User Feedback Task Force - Improvement #5876: Proposal of a new LN class ASWIResolved07/01/202212/31/2022


Updated by Vladan Cvejic almost 2 years ago


Updated by Michael Haecker about 1 year ago

  • Needs More Information set to Yes

See updates/comments made on the original record in UFTF database.


Updated by Vladan Cvejic about 1 year ago

  • Tracker changed from WG10FutureWork to WG10 Future Work
  • Assigned TF None added

Updated by Vladan Cvejic about 1 year ago

  • Standard(s) changed from IEC 61850-7-4 Ed.3 to IEC 61850-7-4
  • Needs More Information changed from Yes to No

Updated by Tetsuo Otani 11 months ago

Although I do not yet understand the requirement here completely, let me suggest that AATS in 90-6 might be meet the requirement.
Please refer to Figure 77 in 90-6 in which an instance of AATS interacts with two CSWI instances.


Updated by Vladan Cvejic 9 months ago

  • Target edition set to Not assigned

Updated by Vladan Cvejic 6 months ago

  • Target edition changed from Not assigned to Next
  • Assigned TF 61850-7-4, 61850-90-6 - feeder automation added
  • Assigned TF deleted (None)

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