Problem high MVA import after transformer energisation
Problem high MVA import after transformer energisation
(OP)
Hi
We have an issue with utility company. We have a high utility bill after we energised our 55 MVA 66 kV/11 kV transfo.
After the high inrush, the stable current was 38.3 A Is this stable current abnormal for a 55 MVA transfo? It is the first time that we have this issue.
What may be the cause of this high MVA consumption? What can be done to prevent this?
Please see attached recording. Thanks
We have an issue with utility company. We have a high utility bill after we energised our 55 MVA 66 kV/11 kV transfo.
After the high inrush, the stable current was 38.3 A Is this stable current abnormal for a 55 MVA transfo? It is the first time that we have this issue.
What may be the cause of this high MVA consumption? What can be done to prevent this?
Please see attached recording. Thanks
RE: Problem high MVA import after transformer energisation
I'm guessing the utility charges a power factor penalty. Consider power factor correction.
RE: Problem high MVA import after transformer energisation
The transformer should not use much energy for the load it serves.
Maybe the demand is from the equipment you have in service.
RE: Problem high MVA import after transformer energisation
RE: Problem high MVA import after transformer energisation
RE: Problem high MVA import after transformer energisation
In either case, the transformer is overfluxed causing it to draw higher magnetising current, i.e. drawl of high MVArs from the 66kV grid.
High MVArs (for a given MW) translates in to higher MVA demand.
RE: Problem high MVA import after transformer energisation
RE: Problem high MVA import after transformer energisation
RE: Problem high MVA import after transformer energisation
RE: Problem high MVA import after transformer energisation