Comment by londons_explore
2 days ago
I considered that. Considering the cheap cost of the cable, the best solution appears to simply be 'dont have a breaker'. In either over current or over voltage conditions, simply sacrifice the cable.
Obviously you engineer the convertor stations to minimize the chances of that happening - stopping the convertors automatically if anything looks abnormal. The cable has sufficient capacitance that you have multiple milliseconds to respond, so automated systems should have no difficulty.
> simply sacrifice the cable
How is that different from a fuse?
If I said to build a 3000 kilometer fuse and quench it with the entire Atlantic ocean, people would tell me I was being silly.
But given how expensive the wire will be to lay, what about an actual fuse that's cheaper than laying a whole new wire?
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