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  1. powereng91

    Reflection of harmonics through Y-d, D-d and D-y transformers

    Will these harmonic components be seen on the other side of the transformer (reflected).
  2. powereng91

    Reflection of harmonics through Y-d, D-d and D-y transformers

    Can anyone clarify for me which order harmonics can be reflected through these different transformer configurations? I understand that the 3rd harmonic can not be reflected through a Y-d or D-y transformer but other order harmonics can. Will all harmonics be reflected through a delta-delta...
  3. powereng91

    3 phase generators/transformers operating in parallel

    Just wondering if anyone knows whether there will be issues with harmonics under this arrangement if a non-linear load is connected. I understand that the ydn1 transformer will nullify 3rd harmonics preventing it to be reflected to the delta side. For the delta-delta transformers I think a path...
  4. powereng91

    3 phase generators/transformers operating in parallel

    @Waross There are additional breakers between the generator and the transformer for protection. The generator and the transformer are of the same capacity. So to prevent transformer inrush should I put the synchronising gear across the CB's between the transformer and the bus and close here when...
  5. powereng91

    3 phase generators/transformers operating in parallel

    Thanks for your reply. So if the generators are synced on the primary LV side of the transformers then on the other side of the transformers the delta-wye line voltages will lead the delta-delta transformer line voltages by 30 degrees. Are you saying this will not be an issue? or should they be...
  6. powereng91

    3 phase generators/transformers operating in parallel

    Is it possible to parallel connect a generator that is fed into a delta-wye step up transformer to a number of other generators which are fed into delta-delta step up transformers. Basically I want to connect these generator fed transformers all to a common bus. They are all operating at the...

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