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CIM Issues #4045

ExternalNetworkInjection.governorSCD datatype and descripti

Added by Herbert Falk over 2 years ago.

Status:
Closed
Priority:
Normal
Author/Contact Info:
ENTSO-E 2012 IOP
Base Release:
61970cim16v10
Solution to be Applied To:
61970cim16v12
Solution Version:
CIM16
Solution Applied By:
KLH
Completion Date:
08/24/2012
CIM Keywords:
Breaking Change:
No
Breaking Change Description:
CIM Impacted Groups:
WG13
Requestor:
Standard(s):
Version:
Clause:
Sub-Clause:
Paragraph:
Table:
Originally Closed in Version:
CIM16
Origination Date:
07/22/2012
Origination ID:
13_112
Originally Assigned To:

Description

ExternalNetworkInjection.governorSCD datatype and description
There is an issue with the attribute governorSCD of the class ExternalNetworkInjection. The data type and description need to be updated to reflect the meaning of the attribute. Changes should be done in UML and in IEC 61970-452.

Proposed Solution

ENTSO-E IOP proposal: Change data type from PerCent to MW/Hz. The new description of the attribute should be: "Power Frequency Bias. This is the change in power injection divided by the change in frequency and negated. A positive value of the power frequency bias provides additional power injection upon a drop in frequency.".
From Christoph Schmid: The attribute ExternalNetworkInjection.GovernorSCD was copied from GeneratingUnit together with the unit (%). As an ExternalNetworkInjection does not contain generator data the base value for the % is not given. Therefore the following suggestion was made during the IOP:
- ExternalNetworkInjection.governorSCD:
- Unit not % but MW/Hz
- Description text:
Power Frequency Bias. This is the change in power injection divided by the change in frequency and negated. A positive value of the power frequency bias provides additional power injection upon a drop in frequency.
-MW/Hz is the correct unit for this description.

Decision

(2012-08-22) Agreed to change as suggested.

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