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Why does high wind cause power cuts?

Andy Millar
May sound like a stupid question but then "there's no such thing as...". Is it typically because the phases in a three phase line touch? Or because branches blow into the lines and arc across? Or sometimes one thing, sometimes another?


Google let me down, so posting this - in one of those brief intervals when we do have power today :) It's the fact that what ever is causing them is obviously easily resettable - by the rate ours has been going on and off today - that made me start thinking about it. (It's on the HV lines affecting my village and half the adjacent small town. But not, you'll all be relieved to hear, the Ginsters' pasty factory which is on the other side of town :D ) 


Thanks,


Andy
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    More like high jinks up here.

    A strange story of brief power cuts happening on a regular intermittent basis. Apparently it had baffled the DNO for the region for a while. They had monitored the overhead lines and removed many of the overhead tree branches which were considered possible culprits. It made no difference. So they hired a helicoper again to check for any hotspots (not sure how a high resistance joint would cause the system to trip out) While they were flying along the lines they witnessed a group of hefers using one of the supply poles as a rubbing stick, causing the pole to vibrate and the lines to collide, a flash and a big bang and the culprits scampered] off leaving no evidence. It had to be witnessed to be believed.


    Legh
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  • 0
    More like high jinks up here.

    A strange story of brief power cuts happening on a regular intermittent basis. Apparently it had baffled the DNO for the region for a while. They had monitored the overhead lines and removed many of the overhead tree branches which were considered possible culprits. It made no difference. So they hired a helicoper again to check for any hotspots (not sure how a high resistance joint would cause the system to trip out) While they were flying along the lines they witnessed a group of hefers using one of the supply poles as a rubbing stick, causing the pole to vibrate and the lines to collide, a flash and a big bang and the culprits scampered] off leaving no evidence. It had to be witnessed to be believed.


    Legh
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