Demolition of Didcot A Power Station northern cooling towers with 33kV flashover 18th August 2019
HTML-код
- Опубликовано: 17 авг 2019
- Some footage of the demolition of the remaining three cooling towers at Didcot Power Station on 18th August 2019 at approx 0700. Location was in the fields between Milton Park and Sutton Courtenay, around 1000m from the towers. I kept the camera rolling to capture the dust cloud and was fortunate enough to catch the unexpected finale!
1. Demolition (approx 0:33 from start)
The sound arrives just over 3s after the first visible activity, as expected at that distance. Collapse is surprisingly fast at just 12s from start to finish. The dust cloud travels North-East towards Appleford.
2. 33kV flashover (approx 2:06 from start)
The cause may have been a flashover elsewhere, maybe caused by debris kicked up by the demolition (a flash can also be seen on the other side of Sutton Courtenay Lane). Watch everyone scatter and the lines swaying afterwards due the magnetic force of the fault current! 
Наука
Great shot of the pylon going off, nearly 40,000 people lost power from this
8 toes cud b a thing of the past 😃
Darren Brooks Sounds as if they dud a good job!
Impressive video!
Yeah...i was one of them.
@@bellandhowell2899 Hi Bell and Howell, We're doing a story tonight about the aftermath of this on BBC South Today. Is there a number I can get you on please? I'd be interested to hear what the impact of the power cut was for you?
Fred Dibnah would of done the job without wrecking the local power grid ha ha.
Lol he woulda just wrecked all the layers of years of beacuracy in H&S and the fun of subsequent people employed to enforce those safer processes of work in destruction haha
The left tower blasted out a long piece of hard material that ploughed into it's nearest pylon cables causing flash and surge spreading along as quivering cables then further surges & sizzles.
The pylon would have sent spatter similar to welding over a great distance. Did concrete fly out and smashed the ceramic insulator or was it dust conducting electricity?
What's happened to the pole explosion?!
They should turn off the electric power at the mains for safety.
IVE SAT HERE LAUGHING THAT MUCH TEARS RUNNING DOWN MY FACE WHEN NELSON MUNTZ WENT HA! HA! AFTER THE ELETRIC SURGE I KEEP PLAYING IT OVER AND OVER AGAIN NICE ONE NELSON
where is this
My dad works at Didcot infinis and he called his boss when he saw that happen
Bang, and the electric is gone!
Hi im Barry Didcot from Cil-Electric Bang
And this is why we should keep our cameras running. We never know what's going to happen next.
I was right there when the last bit of the video happened everyone was freaking out
What’s the betting they delay Ferrybridge cooling towers demolition now?
No. 4 come down in October then 3 are staying for a Gas Power Station.
I love that the arc buzzing is different than I'm used to in the US. It's at a harmonic of 50Hz or 100Hz instead of 60Hz or 120Hz we'd hear over the pond.
US arc for comparison: ruclips.net/video/o1LeDTl2GDg/видео.html
100Hz tone (UK electricity): ruclips.net/video/Cdi0jQtMqV8/видео.html
120Hz tone (US electricity): ruclips.net/video/pf-vULfjYK8/видео.html
Great post but as a humble electrician who knows a little @ high voltage this video puzzles me. Its over a minute after the demolition before the pylon shorts out. The dust from the destruction is blowing away from the pylon. At that time in the morning at this time of year the insulators would be covered in dew. Concrete dust sticking to that dew would furthur reduce the insulating properties of the carriers. the fall out dust is off to the left of the pylons though. Explain please. Thanks.
Puzzles me too. This was the second of two faults. Possible sequence of events:
1. Seconds after tower blowdown, debris (protective netting?) flew out shorting the lines North of the site. Here, multiple 33kV and one 132kV line run parallel (20m or less apart at one point).
2.Fault caused the circuit breakers on those line(s) to disconnect.
3. After a delay, breakers would 'auto reclose', reconnecting the line (automatic as most faults are temporary e.g. lightning).
4. 90s after blowdown, flashover captured in my video occurred. Initial breakdown at top conductor. At this location to the West of the site, several 33kV circuits go underground for a short distance, then back overhead. Possible scenario is the netting at the first location was still on the lines or subsided. A 132kV to 33kV short? Only a guess.
Other people's footage shows both faults:
Fault1:
1 min 10s into this video (near the end) debris shorts the lines. Footage shows two simultaneous flashes where the netting impacts.
ruclips.net/video/Itf5L3j11zQ/видео.html
Fault 2:
45s into this video, there are simultaneous flashes at both locations:
ruclips.net/video/IgjNbgirLbw/видео.html
@@ChiplessStar I'd agree that there was an overvoltage on that line, it could have been caused by the 132 line that seems to be adjacent and oversails the 33 line. I'm guessing the protection took the 132 line out quickly on the initial fault but when it auto reclosed the fault wasn't quite enough to take it out quickly the second time. It would be interesting to see the fault log!
What concerns me is why the short circuit was going on for so long. The protection should have kicked the line out after a second, at most!
Is this filmed using a ZTE Axon?
No. Filmed with a Sony DSC-P200 of 2004 vintage. I really wish I'd used a higher res camera. Unfortunately, the low image quality lets it down.
@@ChiplessStar just curious, it seems to hunt for focus just like my phone. Thanks for uploading the video, that must have been pretty intense to see first hand.. Lucky you hadn't stopped recording!
This was the 33kV. Just imagine a 275 or 400kV flashover...
66kv actually
No flashovers at such high voltage. Just a big loud bang. Even at 33 or 66 kV the protection should have kicked in quicker.
I lost power and it scared me cuz i forgot it was happening 🤣🤣
Hi Hernandeas, We're doing a story tonight about the aftermath of this on BBC South Today. Is there a number I can get you on please? I'd be interested to hear what the impact of the power cut was for you? if not i'm on 07384456591
The noise of the electrical flashover is incredible. I like how just after the last sparks buzz out, Nelson from The Simpsons appears and goes "Ha Ha". ruclips.net/video/TFyRweYlkg8/видео.html
Rumour has it that there was a drone strike, another friend shot footage from another angle and the initial flash is seen as the towers fall, this later flashover was possibly the automatic systems firing the circuit back on..
I stand corrected. Footage now reveals that a large chunk of something flew from the tower onto the substation. Surprised that a facility so close was still live.
Well they would not be allowed by public to turn off the power for over 2 hrs between 6am to 8am as planned demo time i bet .
Particular areas are rarely fed from just one point, either National Grid or SSEPD would have options to switch those lines out, which is exactly what they ended up doing to get the power back on in 50 minutes,
@@mikeclifton7778 if you look at drone footage of the tower collapse you can definitely see the large chunk of something coming out the tower and hitting live power lines, that causes either a short to ground or a short from phase to phase which causes the power line arcing back at the weakest links.
If you look at Ordnance Survey maps of the area (or even Google Maps Satellite View) you can see that the power lines originally came in over the road and then split up and went different directions within the power station "zone". But when you look at Google Street view which was taken in May this year, you can see that as soon as the power lines cross the road they're taken underground and they then reappear somewhere else, presumably near to the cooling towers that just blew up.
Someone messed up here big time either way. Either the people doing the demolition didn't plan for the potential for things to go wrong and for stuff to come out the tower demolition and hit the nearby power lines, or the demolition company didn't do their due diligence and assumed everything would go fine, or they contacted the electricity company who said the lines were dead (or someone assumed they were dead).
@@CoolSteve08 My son still has some quite good contacts within SSE and SSEPD , they were told that it was outside the danger zone! Oopsie!
So glad I don't live there anymore, no radiation for me lol
It's coal powered.
Phoenix Berry 🤣dumb shit it’s coal powered
I'll get my coat!
Knighthoods all round
Oop's.......One fried spectator!
Ooer!
I was there im up close though
@Plawn Clackers HAHAHAHAHA
Good job everyone we all suck 2:09
Allahu akbar :D
I feel like I ve seen this comllapse pattern before...
Oh yeah ... that s exactly how the twin towers collapsed
Julian Eduard with a statement like that I bet you'r parents are really proud to have reared such a moron as you!,that's if you have any you dickhead