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CIM Issues #6299

OperationalLimitType; add an attribute to hold the "type" of limit, such as Emergency, Normal, ...

Added by Becky Iverson almost 2 years ago. Updated 5 months ago.

Status:
In Progress
Priority:
Normal
Author/Contact Info:
Base Release:
CIM18
Solution to be Applied To:
CIM18
Solution Version:
Solution Applied By:
Completion Date:
CIM Keywords:
Breaking Change:
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CIM Impacted Groups:
None
Requestor:
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Originally Closed in Version:
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Description

Current use of OperationalLimitSet.name or OperationalLimit.name to hold the condition of the limit; such as Emergency Limit or Normal Limit or LoadShed Limit becomes a "person viewable" nice solution, but not a machine readable nice solution. Having a new attribute in OperationalLimitType either as a flexible String data type, or of an enumeration of the most common types of limits would enhance the use and determination of the types of limits.

Decision

07-Feb-2024 Discussed in the weekly call:

Open question: Are we willing to make breaking changes (via a new proposal)? Or are we going to adapt what we have today (via Becky's suggestions)

DECISION TODAY:

Include Becky (and any others interested) to carve out an hour to discuss details. Needed for that discussion would include:

- Becky to provide descriptions relevant to each proposed enum literal (with follow on review from WG13 next week)
- Practical use cases to support each literal being recommend.

Upon review after that hour we should have enough information to proceed with what to add.

18-Sep-2024 Joint TF Hybrid Meetings:
Final review. The essence of this issue (now that the *Kind enum is already normative) is to add additional enums to it.
Action Item: Becky agreed to provide the full list (with descriptions) for the list of enum literals to be added.

That issue can be closed once Becky's enums are added.

#1

Updated by Todd Viegut about 1 year ago

  • Decision updated (diff)
#2

Updated by Becky Iverson about 1 year ago

Can this request be modified to instead add LimitKind enum values that are used by the new attribute "kind" which was added to support the ENTSO-E extensions? Can additional enum values be added to the "LimitKind" enumeration to support the typical set of limits for "Emergency", "Normal", "LoadShed"? The LimitKind defined in the model CIM_Grid18v09_Support14v00_Market04v14.eap already includes "highVoltage", "lowVoltage", "operationalVoltageLimit", "alarmVoltage", "warningVoltage" and "stability".

#3

Updated by Chavdar Ivanov 6 months ago

  • Status changed from New to Open
#4

Updated by Todd Viegut 6 months ago

  • Status changed from Open to In Progress
  • Base Release set to CIM18
  • Solution to be Applied To set to CIM18
  • Decision updated (diff)
#5

Updated by Becky Iverson 5 months ago

Please add the following new enums to the LimitKind enumeration used by OperationalLimitType.kind;
Pulled from NERC documentation is the following definitions:

Normal Rating – The rating as defined by the equipment owner that specifies the level of electrical
loading, usually expressed in megawatts (MW) or other appropriate units that a system, facility, or
element can support or withstand through the daily demand cycles without loss of equipment life.

Emergency Rating – The rating as defined by the equipment owner that specifics the level of electrical
loading or output, usually expressed in megawatts (MW) or Mvar, or other appropriate units, that a
system, facility, or element can support, procedure, or withstand for a finite period. The rating assumes
acceptable loss of equipment life or other physical or safety limitations for the equipment involved.

#6

Updated by Becky Iverson 5 months ago

Load Shed Rating - Would be considered another type of Emergency rating that typically has a shorter duration

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