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If I ran the local power grid I’m not sure I’d want cargo trains using line power for traction, unless there was some mandated weight or length limit 🤔

Without some cargo limit I think sections of the line’s voltage will just collapse under the current being drawn, whenever the cargo train moves off from a complete stop - especially if it’s a multi mile long cargo train that seems common in the US

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serratur@lemmy.wtf ⁨1⁩ ⁨year⁩ ago
The Kiruna - Narvik electrified line is operating just fine with LKAB running the heaviest trains in Europe with a mass of 8600 tonnes.

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BastingChemina@slrpnk.net ⁨1⁩ ⁨year⁩ ago
90% off the cargo trains are powered with electricity in France and can reach up to 750m.

I agree It’s not multi mile long but it’s totally possible to have electric cargo trains.

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roguetrick@kbin.social ⁨1⁩ ⁨year⁩ ago
There's little chance of that happening, but even if there was, they'd just use batteries for the acceleration phase. That's what hydrogen fuel cell trains do anyway, because the fuel cell can't produce enough power on it's own to accelerate the train, so they're used to charge batteries that allow it to do so.

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someguy3@lemmy.ca ⁨1⁩ ⁨year⁩ ago
I really can’t see a train pulling so much that it crashes the entire system.

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uis@lemmy.world ⁨1⁩ ⁨year⁩ ago

Without some cargo limit I think sections of the line’s voltage will just collapse

I think this guy never learned about resistance. Maybe he skipped physics classes, maybe he didn’t even have them yet.

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- lemann@lemmy.one ⁨1⁩ ⁨year⁩ ago
  Would you ellaborate on what you mean, and the assumptions you drew from the quoted text?
  
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