Wind Turbine Interconnection - Transformer Configuration
Wind Turbine Interconnection - Transformer Configuration
(OP)
Does anyone have experience designing wind turbine interconnections? My experience with generator step-up transformers is to have a delta-wye, with the delta on the generator side, and a wye on the utility side. One of the leading turbine manufacturers is proposing a wye-wye transformer connection, or even a wye-delta, with the wye on the generator side and a delta on the utility side.
This project is relatively small, with to 1.5MW turbines, each with a 2000kVA from 575V on the turbine side to 13.8kV utility voltage. Any thoughts??
This project is relatively small, with to 1.5MW turbines, each with a 2000kVA from 575V on the turbine side to 13.8kV utility voltage. Any thoughts??






RE: Wind Turbine Interconnection - Transformer Configuration
respectfully
RE: Wind Turbine Interconnection - Transformer Configuration
RE: Wind Turbine Interconnection - Transformer Configuration
If you can come up with a connection that both the utility and the wind turbine supplier agree on, consider yourself lucky.
RE: Wind Turbine Interconnection - Transformer Configuration
However, unit transformer configuration may be influenced by the type of wind machine - many older ones are asynchronous generators, while newer ones are increasingly synchronous generators (sometimes with 6 phases) and with the AC/DC/AC converter between the generator and transformer, allowing so generation at variable rotor speed and eliminating a need to have a gear box (speed increaser).
As for the intermediate transformers, their connection may be imposed by the utility you connect to and their practices.