If the odd harmonics were filtered out, would the zero crossing of the
60 (50) Hz fundamental
be stable enough ?
Thanks Stan, W1LE Cape Cod FN41sr
On 9/11/2010 5:08 PM, Bob Camp wrote:
Hi
You also have load dependent harmonic energy on there that messes up the zero
crossings at the micro second level.
Bob
On Sep 11, 2010, at 3:45 PM, "Poul-Henning Kamp"<[email protected]> wrote:
In message<[email protected]>, "Thomas A. Frank" wr
ites:
If so, being within 300 miles of each other suggests that they are
most likely all on the SAME section of the grid, in which case the
phase time of arrival of the electric power waveform should be
constant between them (the zero crossing may not be perfectly
aligned, but it should always be the same differential).
Won't work. Utility transformers have load-dependent parasitics
which mess this up. It is one of the biggest challenges in
doing "autonomous cell based grid control" and similar schemes.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
[email protected] | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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