4 ms·
The issue with DC transmission in subsea cables is that the XLPE insulation can become polarized and - from what I remember - have water drawn into it due to th
by Lascaille 5y ago
The issue with DC transmission in subsea cables is that the XLPE insulation can become polarized and - from what I remember - have water drawn into it due to the consistency of the field.
- spookthesunset 5y agoYou could probably flip the current at periodic intervals to deal with this.
- Lascaille 5y agoYou're talking about flipping the polarity, going occasionally from conductor-positive to conductor-negative (the shield must remain at ground potential.) If I remember correctly that actually makes things much worse if you've operated at one potential for a considerable amount of time. You could operate the cable at AC ~ 0.1Hz but your ability to actually transmit MWH would suck.