Re: power-grid physics

[James Frysinger <frysingerj@COFC.EDU>]

John, that looks to me like a very good summary of the situation. I especially
appreciate your surfacing the link to the NERC OpMan (PDF).

In there I found a few interesting things:
1. I'm surprised that the speed droop (NERC uses the term "governor droop") is
as large as it is, that is 5 %. I don't recall our turbine generators having
that large a droop, but a couple of decades have gone by since I last
operated them....
2. The required accuracy of a frequency transducer for an Area Coordinator is
only +/- 1 mHz (page P1-12). That seems to put some sort of bounds right
there on system frequency precision. Then I notice that they can order up to
20 mHz deviations to gain or lose time (page P1-8).
3. The use of reactive controls starts on page P2-1, for those who are
interested.

I can't recall who posted it, but I agree that Mike and I converged on at
least near agreement in our postings.

Thanks for the dialog on this neat topic, folks! I haven't had a chance to
dust off those particular neurons for quite some time.

Jim

On Thursday 2003 August 21 18:11, you wrote:
....
> My primary reference is the NERC Operating Manual
> (16 July 2003).
> ftp://www.nerc.com/pub/sys/all_updl/oc/opman/opman.pdf.
....

--
James R. Frysinger
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Senior Member, IEEE

http://www.cofc.edu/~frysingj
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