No, I'm not asking the question, I know why. But I see this question come up so often in social media that it has become both a frustration and a point of interest to me as a social phenomenon.
The point that surprises me is how often the questioner thinks that they are the first to come up with the idea: it is often phrased as 'Has no-one ever thought of putting turbines on a pylon before?'
Anyway, supercilious rant over.
(Answer to rhetorical question: because of voltages. The power lines are at a phase-to phase voltage of upwards of 100kV; the size of wind turbine typically imagined by the questioner operates at a few hundred volts. Even the very largest turbines are no more than one or two kV. So why not put a transformer between them? Because the no-load losses in the transformer would exceed the power generated by the turbine(s), and power transformers for the very highest transmission voltages weigh at least 200 tonnes.)
The point that surprises me is how often the questioner thinks that they are the first to come up with the idea: it is often phrased as 'Has no-one ever thought of putting turbines on a pylon before?'
Anyway, supercilious rant over.
(Answer to rhetorical question: because of voltages. The power lines are at a phase-to phase voltage of upwards of 100kV; the size of wind turbine typically imagined by the questioner operates at a few hundred volts. Even the very largest turbines are no more than one or two kV. So why not put a transformer between them? Because the no-load losses in the transformer would exceed the power generated by the turbine(s), and power transformers for the very highest transmission voltages weigh at least 200 tonnes.)
Aucun commentaire:
Enregistrer un commentaire