[time-nuts] Re: Power grid logging during the eclipse?

[mcleannb at bigpond.com]

Is the street lighting in that part of the world automatic like here down
under? Did a whole bunch of street lighting sensors all detect dark at the
same time and turn the street lights on?
Nic
Near Sydney Australia.

-----Original Message-----
From: Joseph B. Fitzgerald via time-nuts <time-nuts at lists.febo.com> 
Sent: Thursday, April 11, 2024 1:13 AM
To: Discussion of precise time and frequency measurement
<time-nuts at lists.febo.com>
Cc: Joseph B. Fitzgerald <jfitzgerald at alum.wpi.edu>
Subject: [time-nuts] Re: Power grid logging during the eclipse?

The change in load on the grid was fairly unusual during the eclipse with
rapid changes in the bulk power system.   See the graph linked below from
grid operator ISO New England.    Y axis is megawatts of demand, while the x
axis is Eastern Daylight time.    Both days were sunny, but we see the
dramatic effect of the moon's shadow reducing the amount solar generation on
the afternoon of the 8th.

https://bhows.org/New_England_grid_eclipse.png

It is not too surprising (to me anyway) that the grid frequency wandered
around a bit during this unusual load swing.

-Joe
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