345kV Substation Drone Flyover (Teaser)
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- Опубликовано: 30 сен 2024
- That's right! We have added drone capability to our substation videos! We will be doing a complete drone walk through of a 345kV substation in the next few weeks. We will be able to get very close to the equipment, connections and the equipotential arcing during 345kV air switch operations!
I am very curious how the drone responds around the EMF field.
Do you notice anything different about these two transformers?
Yes! Glad to see these videos are back! And in 4k quality! The old videos of the substation tours were awesome!
Glad you like them!
Woohoo! Excited to have more substation videos. Loved your original content before you had to take it down.
Thanks! Yes, sad but necessary to maintain business relationships. More to come!
Is this the same one from your video back in 2020? Looks like they redid the cooling.
Different! What cooling are you referring to?
@@spdfreakls1 fans on the sides vs bottom of the (transformers???) - I did a quick visual compare and contrast cos they looked like they might have been the same station
@@gsuberland its fairly typical to have them on the sides, although it makes a lot more sense having them on the bottom to blow the air upwards. I will have to ask one of the manufacturers about that!
@@spdfreakls1 I don't ever recall seeing any with the fans on the bottom. But the reason I think they are on the side is the full length of the radiator will get ambient are blow over it. Whereas if it is blown from the bottom the air heats up as it travels up the radiator and would not be as efficient removing heat. Good to see a new video from you too!
EDIT: The more I think about it, having the fan on the bottom would also cause a slight restriction in the natural air convection when the fans were off. With no bottom fans the air is more free ti circulate on it's own. Plus, normally there is more area to mount more fans (for more air) on the sides vs the bottom. Never gave it much thought but was a good question.
Is there any risk that the drone could act as a kind of a bridge, extending out the electric field and making it easier for say two phases to arc across via the drone? Or are the lines spaced far enough apart that things like this (or birds) are too small to cause anything like that?
Great question. Yes it can. any metalic object could decrease the phase to phase separation. This is actually a huge subject in itself with phase to phase clearances depending on voltages, altitude, impulse and other factors. IEEE, IEC and others address it and have been modifying their standards over the decades. Even within the standards there are multiple tables of confusing data lol. most engineers us IEC 61936. The short answer though is I will not encroach on MAD (minimum approach distance) or phase to phase clearances with it.
@@spdfreakls1 Fascinating, thanks very much for the additional info!
@ 0:13 there is a single reactive coil on the left of the screen, what does this do in the yard? I get what three of them would do, but one of them on a single phase of three phase system?
I believe you're referring to the neutral grounding reactor on the main power transformer. It's connected between the transformer and ground, which helps to reduce current in the event of a fault and protect the transformer. That's why there's only one of them, it's not connected to any of the three phases.
@@Squid2214 Thanks.
Very cool, thanks for uploading!