Wind Turbine Step-Up Transformer
Wind Turbine Step-Up Transformer
(OP)
Good Day,
I hope I am in the right forum, but can someone please provide me some reputable manufacturers for the Wind Turbine Step-Up Transformers in US, preferably the Midwest. The ones I am looking for are for small wind turbines in the range of 500kW and less. I appreciate the help. Thanks!
I hope I am in the right forum, but can someone please provide me some reputable manufacturers for the Wind Turbine Step-Up Transformers in US, preferably the Midwest. The ones I am looking for are for small wind turbines in the range of 500kW and less. I appreciate the help. Thanks!
"Throughout space there is energy. Is this energy static or kinetic! If static our hopes are in vain; if kinetic — and this we know it is, for certain — then it is a mere question of time when men will succeed in attaching their machinery to the very wheelwork of nature". – Nikola Tesla






RE: Wind Turbine Step-Up Transformer
Rafiq Bulsara
http://www.srengineersct.com
RE: Wind Turbine Step-Up Transformer
www.olsun.com
Neil
RE: Wind Turbine Step-Up Transformer
"Throughout space there is energy. Is this energy static or kinetic! If static our hopes are in vain; if kinetic — and this we know it is, for certain — then it is a mere question of time when men will succeed in attaching their machinery to the very wheelwork of nature". – Nikola Tesla
RE: Wind Turbine Step-Up Transformer
"Throughout space there is energy. Is this energy static or kinetic! If static our hopes are in vain; if kinetic — and this we know it is, for certain — then it is a mere question of time when men will succeed in attaching their machinery to the very wheelwork of nature". – Nikola Tesla
RE: Wind Turbine Step-Up Transformer
The efficiency considerations due to loading profile or any other spec items apply equally to any other power transformer. You still need to spec what you want or need but the any reputed mfr who makes regular power transformers would be able to meet those requirements. Plus you are talking about small units.
Rafiq Bulsara
http://www.srengineersct.com
RE: Wind Turbine Step-Up Transformer
Winding configuration varies, but many use 34.5kV Delta to 690V Wye. At the collector substation 34.5Y - 480V Delta are used for grounding transformers (1 per feeder). The utility tie transformer is wye-wye with a delta tertiary.
There appears to be nothing special about the GSU units (looks like a padmount), other than on the HV side it is a dead front loop feed with an internal primary switch. On the project I am on right now, it is 150kV BIL, cu windings.
I have seen some units that had problems, but I believe this was more of an issue with wye-wye configuration and internal fusing on the HV side.
RE: Wind Turbine Step-Up Transformer
Alan
"The engineer's first problem in any design situation is to discover what the problem really is." Unk.
RE: Wind Turbine Step-Up Transformer
When you say wye/wye transformer with internal fusing on HV,hope you are referring to generator transformer.Normally with large generators the step up transformer is always star/delta to avoid zero sequence currents entering in to stator windings on an LG fault on HV. Then why at wind farm, delta/ star transformer is used as step up transformer?
RE: Wind Turbine Step-Up Transformer
Regards
Marmite
RE: Wind Turbine Step-Up Transformer
If I recall correctly, about 20 units were gassing. As mentioned earlier, the thermal cycling had caused poor connections at the internal fuse connections.
These (in my opinion) were poorly specified. The (H0-X0) neutrals were internally connected. Not much could be done in terms of diagnostic testing. Someone wanted an inexpensive transformer and they got it.
My company does maintenance for several large windfarms in Minnesota. The units that are Delta / Wye (described) above seem to be holding up well over the years
RE: Wind Turbine Step-Up Transformer
"Throughout space there is energy. Is this energy static or kinetic! If static our hopes are in vain; if kinetic — and this we know it is, for certain — then it is a mere question of time when men will succeed in attaching their machinery to the very wheelwork of nature". – Nikola Tesla
RE: Wind Turbine Step-Up Transformer
RE: Wind Turbine Step-Up Transformer
http://w