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  1. davidbeach

    Isochronous load sharing Vs Droop control with PMS

    As mentioned above, large systems, with hundreds of generators, will have a variety of control strategies, but none will really align with the small system isochronous and droop approach. There will be based loaded generators that produce a set amount of power regardless of system changes...
  2. davidbeach

    generator circuit breaker.

    The transients that the capacitors are intended to snub out will come from the system, through the transformer. So snubber caps on the transformer side are beneficial to both the breaker and the generator while snubbers on the generator side benefit only the generator.
  3. davidbeach

    SLG Fault Calculation at Bus3 (High Side Start Grounded - 33kV) for three winding Aux Transformer (Hand Calculation)

    Show your work. Some fault current but not much. Might not even make it to being effectively grounded.
  4. davidbeach

    Ynynd Transformer Z0

    I don't think I've encountered a new shell type in the 18 years I've been in the utility business.
  5. davidbeach

    Ynynd Transformer Z0

    For a 3-phase core type transformer, yes. For shell type, or for banks of three single phase transformers, no. In those cases assume Z0 = Z1. But always, if possible, use measured Z0 values rather than rules of thumb.
  6. davidbeach

    Computer Program that can block/pass phone calls

    Forward the calls to your cell phones, then set the phone to silence all unknown callers. Piece-o-cake.
  7. davidbeach

    Worst case Fault currents from Generator Decrement Curve

    There are also zero and negative sequence impedances that start out no more than the subtransient impedance and then don't go up during the fault. The sequences being used by the fault matters.
  8. davidbeach

    Calculating Total Electric Power Input kW 3 phase Motor

    Your foreman is missing the root(3) factor.
  9. davidbeach

    How is power sold directly between generator and remote user across different utility entities?

    Of course, the supplier dumps their output into a vast pool and the consumer draws from that same vast pool. Accountants can link supplier to consumer but there are no laws of physics that can produce the same result. Just like on the west coast, BC Hydro can sell to San Diego, but I doubt...
  10. davidbeach

    Generator Reconfigure

    Ah, come on Bill, how do you really feel about it? ;)
  11. davidbeach

    Geostationary internet and cell phone reception

    Cell phone doing WiFi calling? Once, working in Portland Oregon, had project in Fairbanks Alaska. On every call to Fairbanks it was immediately obvious if the phone company had routed it via land line or via satellite.
  12. davidbeach

    Why not using a Synchronous Machine as a Dynamometer?

    But you can afford twice that much to kludge together something that does half as much with twice the difficulty?
  13. davidbeach

    How is power sold directly between generator and remote user across different utility entities?

    They don't actually have to be all that close, and the taps don't have to be all that different. Back in the day, when a neighbor common to both of us, was charging for less than ideal power factor, they had a pair of 500/230kV banks, about 42.3 line miles apart, set slightly differently. We'd...
  14. davidbeach

    Power infrastructure failure cuba

    And the expected result of that is...?
  15. davidbeach

    CS Energy Ltd Callide C4. The coverup continues after RTS at vast cost with no insurance

    I think that there might have been less push-back if you'd just added to the existing discussion in thread815-516441 rather than starting a new thread that doesn't build on what's gone before. When one this sentence into the German to translate wanted, would one the fact exploit, that the word...
  16. davidbeach

    FEMA's Outdated Flood Zone Maps

    Term does. Whole Life and other similar types of policies, which have much lower payouts per dollar spent on premiums, continue on to the end of life. When one this sentence into the German to translate wanted, would one the fact exploit, that the word order and the punctuation already with...
  17. davidbeach

    "Zero offset" in tranformer's inrush current

    Just the right point on wave when it closed into that phase. When one this sentence into the German to translate wanted, would one the fact exploit, that the word order and the punctuation already with the German conventions agree. -- Douglas Hofstadter, Jan 1982
  18. davidbeach

    FEMA's Outdated Flood Zone Maps

    Yes, it does. When one this sentence into the German to translate wanted, would one the fact exploit, that the word order and the punctuation already with the German conventions agree. -- Douglas Hofstadter, Jan 1982
  19. davidbeach

    Power Factor

    Er, no. The definition of power factor is real power (W) divided by apparent power (S). There is a companion reactive factor which is Q/S, but it's much less commonly used. When one this sentence into the German to translate wanted, would one the fact exploit, that the word order and the...

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