Guten nacht Attila,
On 04/14/2016 12:24 PM, Attila Kinali wrote:
God middag Magnus,
On Thu, 14 Apr 2016 03:38:38 +0200
Magnus Danielson <[email protected]> wrote:
The professional equipment does it this way. It samples, filters and
decimate the data. For the professional use the absolute phase is
relevant, so group delay needs to be flat, known an
calibrated/compensated.
Jupp, I am aware of those. But I didn't expect many people here
to know of them :-) I have quite a few friends who work in the
energy distribution busines and its related problems (like network
stability, oscillations of dynamic systems, complexity theory etc)
hence I have a cursory interest in the equipment to monitor power
networks as well. It is intersting to see, that modern power networks
rely more and more on precise timing as well.
Indeed. I've even written an article with researchers relating to PMUs.
Even more interesting
is that the primary source for time is GPS these days, with all its
problems. I am not sure whether the desginers of these networks are
fully aware of the security and reliability implications that come
with GPS (or GNSS in general). Maybe i should dig a little bit around
and see what's current common practice in europe.
See my and Alison's presentation at the US PNT advisory board.
Using Alison's words, we need to do some hygiene cleanup.
Cheers,
Magnus
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