cross-posted from: https://lemmy.world/post/14465880
It's the endgame.
this post was submitted on 19 Apr 2024
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Can you please elaborate on the technical details of the failures? What was the hidden dependency?
The ISP had redundant electrical grid connections for reliability, but the two connections were not isolated at the electrical utility level. A failure in one substation cascaded to the other substation. The operation of one electrical feed depended on the operation of the other, so they were effectively only a single feed.
But I don't understand why them being connected makes one dependent on the other, unless half of the supply alone can't support the workload. What is the "electrical utility level"
Both substations feed in parallel. Demand exceeded the capacity of station 2 to supply demand and it tripped the cutout. Only rural connections are radial. Electrical utility starts at the point of demarcation to the generators that make the power.