Project

General

Profile

CIM Issues #6452

Allow multiple RatioTapChanger on one TransformerEnd

Added by Yang Feng 5 months ago. Updated about 2 months ago.

Status:
In Progress
Priority:
Normal
Author/Contact Info:
Yang Feng
Base Release:
Solution to be Applied To:
Solution Version:
Solution Applied By:
Completion Date:
CIM Keywords:
61970-Wires
Breaking Change:
Yes
Breaking Change Description:
May need product adjustment to handle multiple tap changers on the same winding in simulations like power flow, state estimation...
CIM Impacted Groups:
WG13
Requestor:
Standard(s):

61970-301,61970-452

Version:
Clause:
Sub-Clause:
Paragraph:
Table:
Originally Closed in Version:
Origination Date:
06/28/2023
Origination ID:
Originally Assigned To:

Description

The current cardinality only allows one RatioTapChanger to be associated to a PowerTransformerEnd. I've come across multiple scenarios where a transformer may have two RatioTapChanger on one PowerTransformerEnd, one of which is on-load tap changer and the other one is off-load tap changer. Attached I've added one example from a real customer data describing it.

Files

Multi_TapChanger_same_winding.png View Multi_TapChanger_same_winding.png 85.4 KB Yang Feng, 06/28/2023 10:04 AM

Proposed Solution

Change the cardinality to 1:0..2 (if this is allowed) or to 1:0..*
Most of the cases I have seen is to have two RatioTapChanger, never encountered more than two scenario

Decision

Call 18 Oct 2023
the group is not sure that we need to change the cardinality. We rather have this modelled in a different way. Suggested to have a wider discussion in Minneapolis meeting - 23 Oct 2023

#1

Updated by Yang Feng 5 months ago

  • Standard(s) changed from 61970-301/452 to 61970-301,61970-452
#2

Updated by Chavdar Ivanov about 2 months ago

  • Status changed from New to Open
  • Decision updated (diff)
#3

Updated by Chavdar Ivanov about 2 months ago

  • Status changed from Open to In Progress

Also available in: Atom PDF