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CIM Issues #5098

CsConverter targtAlpha and targetGamma

Added by Chavdar Ivanov over 2 years ago. Updated about 2 months ago.

Status:
Closed
Priority:
High
Author/Contact Info:
Chavdar Ivanov
Base Release:
CIM17
Solution to be Applied To:
CIM18v10
Solution Version:
CIM18v10
Solution Applied By:
Chavdar Ivanov
Completion Date:
02/04/2024
CIM Keywords:
61970-DC
Breaking Change:
Yes
Breaking Change Description:
Change of cardinality in SV profile 61970-456
CIM Impacted Groups:
WG13
Requestor:
Standard(s):

61970-301, 61970-452, 61970-600

Version:
Clause:
Sub-Clause:
Paragraph:
Table:
Originally Closed in Version:
Origination Date:
Origination ID:
Originally Assigned To:

Description

The description of CsConverter.targetAlpha contains the constraint " It is only applicable for rectifier if continuous tap changer control is used."
The description of CsConverter.targetGamma contains the constraint " It is only applicable for inverter if continuous tap changer control is used."

The following needs to be clarified:
- on what element is the tap changer e.g. is it the TapChangerControl that regulates the Terminal that is referenced by ACDCConverter.PccTerminal or it is something else?
- the severity shall be clarified - to confirm that this is error if these conditions are not met


Proposed Solution

The description of CsConverter.targetAlpha currently contains the constraint: "It is only applicable for rectifier if continuous tap changer control is used."
The description of CsConverter.targetGamma currently contains the constraint: "It is only applicable for inverter if continuous tap changer control is used."

In the 301 we change the above respectively to:

"It is only applicable for rectifier control."
and
"It is only applicable for inverter control."

(it is also suggested that we include the below clarification on the control modes within the description in the 301 as well)

In the 456 (and 600 to reference it) we to verify and/or update if necessary:

The two control modes are mutually exclusive therefore it is expected that one, and only on, will be specified in the SSH profile (this must be verified that a constraint already exists today in the 456 for SSH that enforces this).

The SV attributes alpha and gamma for CsConverter are currently both required cardinality. They should both be optional and a constraint added to link them to the type of control declared within SSH. Only one or the other should be present but not both.


Decision

Apply the above proposed solution as amendments to the publication for CIM17. They should naturally be carried over and appear within CIM18 publications as well.

May want to evaluate at the same time if we have other minor "bug fixes" we may want to include at the same time.

Chavdar: To work with ENTSO-E to determine impact and how they will approach this.


Release Notes

The description of CsConverter.targetAlpha is modified to "Target firing angle. It is converter’s control variable used in power flow. It is only applicable for rectifier control. Allowed values are within the range minAlpha<=targetAlpha<=maxAlpha. The attribute shall be a positive value.
"
The description of CsConverter.targetGamma is modified to "Target extinction angle. It is converter’s control variable used in power flow. It is only applicable for inverter control. Allowed values are within the range minGamma<=targetGamma<=maxGamma. The attribute shall be a positive value.
"
- added the following text to CsConverter: "Attributes targetAlpha and targetGamma are mutually exclusive therefore only one of them can be defined to describe an operating target."

In 61970-456
- SV profile: changed CsConverter.alpha to optional
- SV Profile: changed CsConverter.gamma to optional
- The following constraints are added in SV profile
• C:456:SV:CsConverter.alpha:cardinality
The CsConverter.alpha is required if CsConverter.operatingMode equals CsOperatingModeKind.rectifier. CsConverter.gamma is not exchanged in this case.

• C:456:SV:CsConverter.gamma:cardinality
The CsConverter.gamma is required if CsConverter.operatingMode equals CsOperatingModeKind.inverter. CsConverter.alpha is not exchanged in this case.

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