#g7izu โ Public Fediverse posts
Live and recent posts from across the Fediverse tagged #g7izu, aggregated by home.social.
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GB Grid Monitor: One for the data geeks!
You may know that I recently created an energy and environment dashboard that's available to download on Github.
Over the last week or so I've made some significant upgrades to the dashboard's monitoring and data logging functions. For example, local weather alerts are now enhanced. Rain is tracked nearby and alerts are spoken when rain is due at your location through the use of Environment Agency rain gauges. Mobile "Virtual" rain gauges are deployed to track and confirm incoming rain using Open Meteo and Open Weather Maps APIs. If using a VPN the API limits may be hit very quickly, so try to exclude Python from the VPN by using split-tunneling, or switch off the VPN.
The electricity grid monitoring is enhanced and includes a "system risk index". This monitors system inertia and alerts for when the system is particularly at risk of collapse - the function is calibrated against NESO's own data. Despite official statements, the grid is in a very precarious state at the moment due to rate of decarbonization and the shift to renewables. If the grid frequency moves outside of the statutory limits you hear annoyingly loud alarms (annoying only for your non-geeky other half, that is!)
If a collapse is imminent and the data reaches you before the power goes off, you may get a few seconds' notice before it all goes black.
Data logging is now in place so that historical electricity data can be plotted as 7-day graphs, with data available since 2017 - great for researchers! Frequency plots from upto the last 30 days can be captured to image files via the frequency "history" plot (assuming the app was running to capture the data). Generator plots are back-filled from online archives so can fill in if the app wasn't running.
For the best experience please read the "readme file" before using.
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The NESO Electricity Margin Notice has been cancelled, presumably because sufficient energy margin has now been found.
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UK National Grid issues a "reduced margin" notice for the Eclipse
The UK's National Electricity System Operator (NESO) Electricity Control Centre has issued an "Electricity Margin Notice" covering a four hour period around the partial solar eclipse on Wednesday.
At the peak of the eclipse just after 17h UT, 90-95% of the sun will be obscured over the UK, cutting the power that PV solar cells can produce substantially for a period of time by up to 1760 MW. This, combined with the evening peak demand, has prompted NESO to issue the notice.
The Electricity Margin Notice is not a warning of impending power cuts. Instead it's letting the power generation industry know that there's a period when the safety margin will be reduced more than they want it to be, and therefore inviting flexible generation options to be made available at short notice should it be required. This is a normal type of request for this kind of event.
The full text of the notice in shown in the fourth image.
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Goes 19 Outage - Update
Space weather data and weather images are flowing again from Goes 19 following an outage lasting nearly 24 hours.
Xray flux data restarted at around 16h UT today.
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Goes-19 Outage
This message from NOAA regarding Goes-19 (aka Goes East)
"As of July 15, 5:00 p.m. EDT, GOES-East (GOES-19) is experiencing an anomaly, is not transmitting data, and restoration of service is TBD. Until service is restored, GOES-East images on this site will not update. The GOES site team is monitoring the situation and will update this banner when further details are available."
As my website and the Space Weather Ops dashboards also used Goes-19 solar data, Goes-18 data is the sole data source for some data until Goes-19 can be restored. Should Goes-18 data drop out for any reason, there will be gaps in the data.
As Goes-18 was already the primary satellite for solar data, we're just losing the back up source for now.