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While a student at Tulsa, we toured a pump back generating facility. Part of the Oklahoma Grand River Dam Authority. Our guide causally mentioned that the cascading blackout that started in New York City almost took them off line. Think their frequency tolerance was tighter that Ā±0.5 Hz. Some re-evaluating took place.after the event.
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Frequency tolerance and phase angle are a big deal on the grid. A slight shift in phase angle determines if you are providing power to the grid, or of the grid is running your generators like motors. Part of a defense study about 20 years ago proved that very small malware deployed into switchgear could mechanically destroy $500,000 generators, by taking it off grid, allow phase to drift enough, then bringing the generator back online bypassing phase alignment procedures. They broke crank shafts, engine blocks generator shafts, and cooked the generator wiring and switch gear.
Keeping stuff participating in the grid in phase is a big deal.
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Think in terms of MVARs instead of MWs and interesting things start surfacing. Guide explained that by adjusting the V and I phasing in the exciter, the generator could be used to do PF correction on the grid. That raised a number of eyebrows. One of the generators was being over hauled. The stator windings are not done in copper wire - more like formed/carved copper bar stock.
Donāt know if they still do public tours. Highly recommend. Eyeopener on many levels.
Anyone else āfollowingā the restoration of the Tally Ho by Leo Sampson?
Just the shipsaw in action roped me in, then I had to spend hours catching upā¦
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Well, I will be now. I donāt know whether to thank you or curse you for the scallywag that you are.
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We get to watch Leo use woodworking tools to shape the (14 tons8.5 tons, 17,000lbs, I think) metal ballast keel in this episodeā¦
Earlier ones saw him using the chainsaw to cut up the old one for transportā¦kind of entertaining, tooā¦
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Big fan of Kyle Hill from all the way back at the Mythbusters Jr days, through āBecause Scienceā, and now to his own channel.
Love Lauraās build videos and instincts when it comes to recycling/upcycling things
Same goes for Simone; sheās one of my favorite creators/makers to watch fail, because sheās so good at it! Haha
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Hey @Team_Machine_Shop !
Machinist work on a wooden boat ca 11:41 markā¦
link to the whole thing, if you want to check in on the latest episodeā¦
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These channels are mostly about microcontrollers, but they have some other makery subjects:
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