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Improvement #7095

DO "CECtl" and "Auto" of LN CCGR share a close semantic description

Added by Christophe Ghafari 3 months ago. Updated 22 days ago.

Status:
In Progress
Priority:
Normal
Assignee:
-
Category:
Standard clarification required
Start date:
01/08/2025
Due date:
% Done:

0%

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

IEC 61850-7-4

Needs More Information:
No
Assigned TF:
61850-7-4

Description

In IEC 61850-7-4, the LN CCGR contains 2 DO called "CECtl" and "Auto" (CDC SPC) sharing a close semantic description :
- CECtl : "(controllable) If true, automatic control of complete cooling group (pumps and fans) has been enabled, otherwise the control has been switched back from automatic to manual."
- Auto (inherited from AutomaticControlLN) : "(controllable) If true, output circuit of the automatic controller has been enabled (control is automatic), otherwise control is manual."

Clarification is required.

#1

Updated by Carlos Rodriguez del Castillo 3 months ago

  • Discuss in Upcoming Meeting changed from No to Yes
#2

Updated by Carlos Rodriguez del Castillo 3 months ago

  • Category set to Standard clarification required
  • Status changed from New to In Progress
  • Assigned TF 61850-90-14 FACTS, HVDC & Powerconversion added
  • Assigned TF deleted (None)

We need an explanation from 90-14 of the difference between "CECtl" and "Auto" because the descriptions are quite similar.
We will contact "Gaurav ROY" to ask the question.

#3

Updated by Carlos Rodriguez del Castillo 23 days ago

  • Standard(s) changed from IEC 61850-7-4 to IEC 61850-90-14
#4

Updated by Carlos Rodriguez del Castillo 23 days ago

  • Standard(s) changed from IEC 61850-90-14 to IEC 61850-7-4
  • Assigned TF 61850-7-4 added
  • Assigned TF deleted (61850-90-14 FACTS, HVDC & Powerconversion)

CECtl has been defined in 7-4, so the question must be sent to 7-4

#5

Updated by Gaurav Kumar Roy 22 days ago

Section 6.5 of TR IEC 61850-90-14, "cooling system use-case," describes a generic cooling system for an HVDC or a statcom system.
In an HVDC or FACTS system, multiple cooling systems or pumps are aggregated into a protection IED for an HVDC or STATCOM system, which is aggregated into a "complete cooling group." The Data Object "CECtl" in Logical Node Class "CCGR" is for the complete cooling group rather than an output singular automatic controller, which DO "Auto" describes.

In my opinion, the DO definition also conveys it, i.e
Auto (inherited from AutomaticControlLN) (controllable) If true, output circuit of the automatic controller has been enabled (control is automatic), otherwise control is manual.

CECtl (controllable) If true, automatic control of complete cooling group (pumps and fans) has been enabled, otherwise the control has been switched back from automatic to manual.

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