ELFT HÍRADÓ

[Geza Odor <odor.geza AT ek.hun-ren.hu>]

Tisztelt Vasarhelyi Gabor,
miutan mi ilyen jellegu elektromos hibak kutatasat is vegezzuk,
Hartmann Balint nyoman az alabbi, legfrisebb szakartoi velemenyt 
tudom tovabbitani:

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The massive blackout that affected Spain and Portugal on April 28, 2025, 
originated from a cascading
sequence of technical failures within the Iberian power grid. The outage 
was initially triggered by a
physical fault—a transmission line damaged by a fire in southwest 
France—which caused the sudden
disconnection of critical cross-border interconnections between Spain and 
France.

This disconnection led to a rapid loss of synchronism between the Iberian 
and the wider European grid.
As Spain and Portugal abruptly became electrically isolated, a severe 
imbalance between generation and
demand occurred, likely due to a sudden loss of significant imported power 
and possible subsequent
generator trips within Iberia. The result was a catastrophic frequency 
drop, exceeding the capacity of
automatic under-frequency load shedding systems designed to protect grid 
stability.

Further complicating the situation was the high reliance on renewable 
generation sources (wind and
solar), which reduced the overall inertia of the system, causing the 
frequency to fall too quickly for
protective measures to effectively counteract the imbalance. Additionally, 
voltage instability and
widespread voltage collapse quickly followed as large portions of the 
transmission network lost power
sources.

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Udv.:
Odor Geza


----------------------------------
https://public.ek-cer.hu/~odor/

On Tue, 29 Apr 2025, Vásárhelyi Gábor wrote:

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> Köszönettel,
> Vásárhelyi Gábor
> ELTE Biológiai Fizika Tanszék
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