So, there's a project that an acquaintance is managing, requiring an overhead power line to supply power from the utility of ~1km in length, at (I think) 88kV or 66kV, thereabouts. Whilst the power line costs are apparently as expected, there are other services and infrastructure that must be moved as well as some operational interruptions, and this adds significant costs (and time) to the project. I asked as to why an HV cable was not proposed, as the distance will be shorter at about 400m only, with no services, roads, etc. to be moved and possibly less operational interruption, but was told that it would be too expensive (though seemingly no formal costing had been done).
Be this as it may, this got me thinking - what would the actual cost differences be? Unfortunately I have no idea of the power requirement, probably a few MVA. I'm just curious (the power line is being built) re. ball-park figures, since I've never been involved with cables at voltages higher than 22kV. There was a previous discussion on CR4, but it did not really help.
Comments rated to be "almost" Good Answers: