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CIM Issues #6296

New Quality Code needed in Part 9

Added by David Haynes 2 months ago.

Status:
New
Priority:
Normal
Author/Contact Info:
dhaynes@hubbell.com
Base Release:
Solution to be Applied To:
Solution Version:
Solution Applied By:
Completion Date:
CIM Keywords:
61968-Metering
Breaking Change:
No
Breaking Change Description:
CIM Impacted Groups:
WG14
Requestor:
David Haynes
Standard(s):

61968-9

Version:
4
Clause:
Annex D
Sub-Clause:
Paragraph:
Table:
Originally Closed in Version:
Origination Date:
03/17/2023
Origination ID:
Originally Assigned To:

Description

It is possible for a meter to be connected in primary fashion to the distribution voltage (above the service transformer.) When this happens, transformer losses are not reflected in the measurement. When large amounts of power flow, the 1-2% loss through the transformer accumulates to a considerable amount. Who pays for it? It is an unmetered loss. Usually this can be accounted for by an MDMS, but some high-end meters also offer a transformer loss compensation function. When active, all power measurements are adjusted by the meter. They look like any other measurement, but the compensation has already been applied.
We missed this usecase in our original analysis. The Part 9 team should add a new quality code that provides a new categorization of "compensated" and a new index of "transformer loss." This code could then markup the data and help prevent the compensation from being applied twice.


Proposed Solution

Extend existing quality code enumerations by adding new enumerations to cover the need.


Related issues

Related to WG14 Part 9 Issues - CIM Issues #6322: New Quality Code needed in Part 9NewActions
#1

Updated by David Haynes about 1 month ago

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