tag:blogger.com,1999:blog-4411161795798360588.post3832266367195781265..comments2024-03-26T09:38:39.888+00:00Comments on Borthlas: Parasitic Power ConsumptionJohn Dixonhttp://www.blogger.com/profile/07447224248021209852noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-4411161795798360588.post-22016262917279549332013-10-03T15:35:23.748+01:002013-10-03T15:35:23.748+01:00I can think of two circumstances in which grid pow...I can think of two circumstances in which grid power would be used to spin the turbine blades, John. But both are understandable. <br /><br />All turbines are different; but a certain turbine might turn and produce electricity in a low wind speed of 4m/s, yet only <i>start</i> turning at a wind speed of 6m/s. If you knew (from forecasts or hard information from upwind sensors) that there would be a steady wind speed of 5m/s for the next few hours, it would be worth using grid power for a minute or so to overcome the initial inertia and get the turbine spinning, knowing that you would then get much more electricity back.<br /><br />Another reason (and only on some turbines) would be that if the turbine was likely to be idle for a day or two, you would slowly turn the rotor every so often to prevent it remaining in one position and causing disproportionate wear. However when this is done, it happens imperceptibly slowly (maybe one turn in half-an-hour). <br /><br />So perhaps it's more a case of a couple of grains of truth being exaggerated into a whole silo.MHhttps://www.blogger.com/profile/09329059309196746446noreply@blogger.comtag:blogger.com,1999:blog-4411161795798360588.post-44396301688086429372013-10-02T18:41:37.309+01:002013-10-02T18:41:37.309+01:00Just because there appears to be no wind on the gr...Just because there appears to be no wind on the ground doesn't mean there isn't wind how ever many hundreds of feet up these things are.<br /><br />Add in the fact that these things are designed to capture what little wind there is and it's not easy to imagine how plausible this would sound to a complete moron.<br /><br />Just like back when the Sun went around the flat Earth.Welsh not Britishhttp://www.welshnotbritish.comnoreply@blogger.com