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Feature #5077

Location of SGCB in LD structures

Added by Carlos Rodriguez del Castillo 11 months ago. Updated 6 months ago.

Status:
Resolved
Priority:
Normal
Category:
Standard extension required
Start date:
09/20/2021
Due date:
01/20/2022 (about 7 months late)
% Done:

0%

Estimated time:
ID:
1
Source:
MH
TF Unique ID:
1 # MH
WG10 Proposal:
Estimated Completion:
Discuss in Upcoming Meeting:
No
To discuss in WG10:
No
Short Proposal:
Standard(s):

IEC61850 7-1


Description

An SGCB, if it exists, are located in LLN0. ยง8.2.5: "If setting group control blocks are present, they shall appear only once in any branch of the logical device management hierarchy." Propose to extend this statement to state that the location of the SGCB in the LD hierarchy defines a border line; no SGCB can exist on a higher level. Parallel SGCB can exist.

#1

Updated by Carlos Rodriguez del Castillo 11 months ago

  • Standard(s) changed from IEC61850 7-1 Ed.2.1 to IEC61850 7-1 Ed2.1
#2

Updated by Carlos Rodriguez del Castillo 9 months ago

  • Status changed from New to In Progress
  • Discuss in Upcoming Meeting changed from Yes to No
  • To discuss in WG10 changed from No to Yes

LD1--> SGCB
+-- Distance Prot LD -> SGCB
+--
Overcurrent Prot LD -> SGCB
NOT ALLOWED THIS MODELLING

ALLOWED:
LD1
+-- Distance Prot LD -> SGCB
+--
Overcurrent Prot LD -> SGCB

LD1 --> SGCB
+-- Distance Prot LD
+--
Overcurrent Prot LD

This could be checked with OCL.
There can only be one SGCB for the same hierarchy.

Decision: Raise this issue to WG10 to find out if it is safe to use both options. Maybe a clarification is needed.

#3

Updated by Carlos Rodriguez del Castillo 6 months ago

  • Status changed from In Progress to Resolved
  • To discuss in WG10 changed from Yes to No
  • Standard(s) changed from IEC61850 7-1 Ed2.1 to IEC61850 7-1

Regarding cases:
- First case is not allowed
- Second and third cases are allowed

Regarding clarification:
- Conformance tests are ok with the specification: Test UCA-Test-sCnf48
- Validation should be at OCL 7-1 (not SCL schema validation)
- Should we write a clarification in the standard to make it more clear to users?

Decision: Clarify in 7-1 with Editorial Issue. MH to create the tissue.

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