Ah sucks. I was looking forward to seeing auroras in south Florida.at something very close to a Carrington Event which was estimated to be an X10 Flare. Luckily it will be skirting past the side of the Earth and will not be an issue.
Ah sucks. I was looking forward to seeing auroras in south Florida.at something very close to a Carrington Event which was estimated to be an X10 Flare. Luckily it will be skirting past the side of the Earth and will not be an issue.
LOL that plus a lot of other things would be seenAh sucks. I was looking forward to seeing auroras in south Florida.
Everyone disconnected their antennas so it wouldn’t blow up their radios.LOL that plus a lot of other things would be seen
The Ham Bands are Dead right now. An S7 noise level on 20m, less QRN as I go down the bands but everywhere is silent, no audible stations.
The only reason why you're seeing them that far south (was visible as far south as Puerto Rico) is the Earth's magnetic field is weakening, meaning it can't fend off solar storms as well. It might be pretty to look at, but what it means isn't.Ah sucks. I was looking forward to seeing auroras in south Florida.
Geomagnetic storms are not a big deal anymore. We don't rely on shortwave radio anymore and power grids have protection systems in place and adaptations. We could get through another Carrington and have temporary power interruptions at worst without permanent damage. Anything else is scaremongering for clicks/views.but what it means isn't
Geomagnetic storms are not a big deal anymore. We don't rely on shortwave radio anymore and power grids have protection systems in place and adaptations. We could get through another Carrington and have temporary power interruptions at worst without permanent damage. Anything else is scaremongering for clicks/views.
The likelihood of another Carrington type event is minimal. Even if the Sun lets off a huge CME the chances of the Earth being in the path are small but I don't agree with your assessment of possible damage.Geomagnetic storms are not a big deal anymore. We don't rely on shortwave radio anymore and power grids have protection systems in place and adaptations. We could get through another Carrington and have temporary power interruptions at worst without permanent damage. Anything else is scaremongering for clicks/views.
What are these protection systems in place for the grid that prevent the DC current induced in the lines magnetically saturating grid transformers turning them into resistive heaters so if the power is not cut it burns them out (not with a huge current either, so you can't prevent it with your normal surge protection etc)?Geomagnetic storms are not a big deal anymore. We don't rely on shortwave radio anymore and power grids have protection systems in place and adaptations. We could get through another Carrington and have temporary power interruptions at worst without permanent damage. Anything else is scaremongering for clicks/views.
What are these protection systems in place for the grid that prevent the DC current induced in the lines magnetically saturating grid transformers turning them into resistive heaters so if the power is not cut it burns them out (not with a huge current either, so you can't prevent it with your normal surge protection etc)?
Mapping software on your phone relies on GPS, it was having issues the other day. I know how to read a paper map but do my kids generation ?Forgot about sat birds. Eh we don’t need‘em.
Thanks.
"
For example, ABB and Hydro-Québec tested
their 735 kilovolt transformer design with 75
amperes per phase of simulated GIC for 1
hour and concluded that thermal damage was
not a major concern for this transformer
Technology.
In addition to transformers, protective
relays have various designs that respond
differently to harmonic currents. Protective
relays that are digital can be programmed to
reduce the likelihood of misoperation due to
harmonics and therefore may be more
resilient to the effects of GIC."
And yet they show examples of few transformers failing In Sweden during some previous event. They talk about different transformer design method, how these transformers are a lot heavier and how certain high voltage transformers may be a lot more susceptible. They also mention their conclusions for the US grid are not necessarily the same for "other countries". So as said before, there are transformers that are a lot less susceptible. I think (at least in the EU) each country should do a proper risk assessment.If you want to go really technical:
"
The results suggest the effect of DC bias, caused by either ERC or GIC, on a properly designed
converter transformer differential protection is limited. In the case of steady states, DC bias can
significantly saturate a converter transformer, but the resultant differential current increment does
not cause differential protection mal-operation. In the case of transients caused by external faults,
the effect of ERC/GIC is similar to remanent flux which may improve or worsen CTs transient
performance. The harmonic blocking and higher slope 2 of percentage restraint are able to deal
with spurious trips caused by heavy through-faults with DC bias. Relay tests demonstrate the
preexisting harmonics induced by DC bias does not desensitize the relay for in-zone faults. Either a
relay failure to trip or mal-operation is not related to DC bias but is due to insufficient dimensions
for a CT. Suggestions are provided to ensure protection CTs can be adequately specified and to
improve the dependability and security of converter transformer differential protection.
In this study, the low-frequency characteristic of GIC-induced DC bias was also considered, and its
potential effect on converter transformer differential protection was investigated. The analysis
shows a low-frequency GIC can magnetize or demagnetize a converter transformer and a CT, but
this low-frequency characteristic does not pose any new risks to the operating performance of
converter transformer differential protection. Test results indicate the impact of ERC-induced DC
bias and GIC-induced DC bias on the operating performance of converter transformer differential
protection is similar. To conclude, it is unnecessary to consider the low-frequency characteristics of
GIC, i.e. GIC can be conveniently treated as a DC signature when investigating its impact."
In other words, if properly designed (and I know there are here in Finland, YMMV), it's not an issue. Note also in the paper:
"With respect to the level of DC bias currents, records show the stray ERC measured from transformer neutral points can be as much as 100 A in some HVDC projects [12], but the maximum GIC was up to 200 A in the neutral point of a transformer located in Finland and Sweden [78]. "
I'm not sure if kids of this generation can even handle analog watchesMapping software on your phone relies on GPS, it was having issues the other day. I know how to read a paper map but do my kids generation ?
I wouldn't be surprised if Finland or Sweden had a solution to the transformer issue. Not at all. I would, however, be shocked if we had implemented a solution in the United States.
What’s that?paper map