CIM Issues #6452
Allow multiple RatioTapChanger on one TransformerEnd
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.
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
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