@@the_townleys working on substations is a part of a general electricians scope? im curious because up in canada we have electricians, linesmen, power system techs, instrumentation techs. so I wasnt sure what scope it would fall under.
Hi good morning. There are those that build the buildings.thats a wireman electrician. Then there are those that energize the building itself.those are LINEMAN. Then you have those that ensure those lines stay energized.thats a Substation Electrician. A Substation Electrician maintains all the components inside the Substation so the lines stay energized. The only way to make it safe is to turn it off.😁
In order to maintain a piece of equipment inside the sub most of the time that piece of equipment needs to be taken out of service. If it's a Transformer that needs to be maintained they will take that Transformer out of service install a mobile substation in some cases just to keep the power on for the public
@@the_townleys thats what i figured, probably going to be my second ticket. here in canada linesman deal with everything from the primary transmission to the primary side of the step down transformer. Got to work around a substation doing a backup generator for it. Got me more interested in taking substation tech as my second ticket in 4-5 years.
As a transmission system operator currently in training these videos are awesome. Due to covid they arent letting me into the field. Surge impedance loading (SIL) is the concept of when and why transmission lines will act either capacitive or reactive. During light loading, the lines will produce MVars, and during high loading they consume MVars. Managing system voltage using capacitor banks and reactor banks is something we do constantly in my control room.
Have been in the commercial electrical/electronics field for over 50 years and have always had an interest in high voltage transmission lines and substations, but have never worked on them. Your videos are fantastic in instruction and understanding their workings. I have often seen the rings (corona rings) on high voltage lines and now I know there purpose. When I was a teenage there were high voltage towers that ran over a large reservoir near our house. You could hear and see the corona discharge on humid summer nights, very strange to hear and watch. Keep sharing and Thanks.
Thank you for putting together this video. I'm totally fascinated by infrastructure--and am an infrastructure tourist. When I was 5, I lived in New Jersey. My parents gave me a book on New York City infrastructure... and begged my parents to take me to the places listed in the book. Decades later, I'm still fascinated by infrastructure and am still an infrastructure tourist. This is exactly the sort of video I love, the sort I watch time and time again.
I’m glad guys like you share your knowledge and experience. I’ve learned so much over the years just watching TH-cam videos like yours. Thanks for sharing
Thanks for the video. One the reasons you want to ground the capacitors is dielectric hystersis. Charge will reappear due charge stored in the dielectric.
Great video! I wish I had these when I was taking my NICET exams. I did primarily data center work, substations were scary black boxes to me. Keep up the good work!
That was really interesting to watch, even though I'm not connected with electrical work in any way (if you'll pardon the pun). I always wondered what those rings were for and now I know. Great video.
Hey @SpeedFreakLS1. I believe the rings on the arrestors that are underhung on the deadend structure you called corona rings are actually Grading rings to ensure a uniform voltage across the arrestors. A lot of people call those corona rings but typically when they are on an arrestor their function is typically to act as a grading ring. Keep up the great videos though, there are a few people in our office that are really enjoying them!!!!
You are correct. Its technically both on that specific Hubbell arrestor. The ring around the hardware is the corona ring. The ring around the insulator is the grading ring. 1 piece with 2 functions!
The corona shielding is interesting. Does the corona effect cause much in the way of RF interference with the instrumentation? Edit: I love a physical interlock, primitive or otherwise. I trust them over a software interlock any day.
Hey you are awesome! I hope these are fetched for teaching in the University, instead of boring presentations; complementary at least. Isn't scary to you that sound being so close?
sometimes capacitor banks have timed kirk keys that have a mechanical timing actuator before it releases the key, so you dont just ground the capacitor straight away.
Really cool mechanical interlock, do you know who makes it? Was that the switch manufacture or someone else? Much better then Kirk Keys for an instance like that, basically fool proof. Clean looking yard and control room. Enjoying the videos, makes me really miss substation work. Work safe.
At the dead end, you walked under the cables that sounds “life” isn’t that dangerous towalk under there. You hear scary things of people in substations. Btw aaaa that hum in de background lovely.
I know I'm late, but what about the loose pipe clamp at 10:40 second clamp down on the right. With it being part of an interlock I would think tight would be better.
You can see the surge arresters mounted on top of the transformers - they are the thin insulators with the large hoola hoop shaped things at the top. They are there to protect the transformers for lightning.
I have often noticed the sizzling, but had never heard about the Corona shields on sharp edges and bolts before, I find that fascinating. When I hear an extra noisy pole, I just always assumed it was tracking over the insulator or something, but I guess it could just mean it has a sharp edge. What's the minimum voltage that this is an issue with?
I can't find any info on this, but I've been curious: Why are some wires run in pairs for (what I assume is) the same voltage & phase (Say at 16:20, to the right of the poles)? I'm thinking something with surface area, but I'm very unsure about it...
@9:42 Am I correct in thinking that the interlock arm is secured to the shaft by the friction of the clamp?? I have seen clamps loose their original tension over time and in this case I wonder if this has been considered. This would apply to the breaker interlock on the opposite shaft.
yes, but we have piercing bolts as well (not installed when I filmed). Those piercing bolts eliminate any slipping if bolts go loose. Great observation thought!
A key - can't go wrong with that because its a physical object you have to physically carry with you. Can you imagine the result closing the circuit while its still grounded?
Great video, but please look at the details Two nuts are not screwed, the washers are moving when you are moving the handle, see picture: photos.app.goo.gl/VrPTUfTYe8GZuNsU9
Really like how you explain the parts names and what they do! Such as corona ring. More videos please. Would be interesting to see you explain reactor banks and capacitors.
i'm a software engineer and i absolutely love interlock systems. i typically design the systems i build opposite most people - i put a lot of trips in them so that if conditions are outside of the expected parameters they fail. it's more difficult to build up front, but i think the payoff is well worth it when something goes wrong and rather than continuing to run it shuts off.
Same here. I've written online transaction processing systems, material handling systems and robotics. I thought that last mechanical interlock was truly beautiful, so simple, so elegant and effective. It's easy to design something that's needlessly complex; it's difficult to design something (that hasn't been designed before) that is simple and elegant.
You’re right. For every one of these creative inventions, oddities, rules, regulations, etc... somebody, somewhere screwed up. Electricity takes no prisoners
This is awesome... subscribed! These places look terrifying to a newbie but the more you know the more you see how well engineered protection and safety is.
You’re right, substation protection is very well engineered, but it’s engineered by humans. I’m sure our guy here can tell you about all the engineering errors caught in the commissioning phase. “Trust, but verify” is the motto here.
I've worked on a few windfarms in the Midwest and up in Maine on the comms side so I spend all of my time in the control house and O&M buildings but I was always curious about how each component in the substation works together. Your videos have answered those questions ive had. Thank you!!!
Finally, someone give me a name for those corona ring ! Thank you so much ! One question: when you walk under the high voltage powered lines, do you wear a protective outfit ? Do you feel and are you exposed to a dangerous electrical field ?
No protection. Since the voltage is around us, and not going through us, there is no danger. The crazy amount of substation grounding and rock protect us. If there was 0 grounding and 0 rock and I was grabbing onto a ground rod near the conductors, i would get the crap shocked out of me. These are designed so there is 0 risk. I only feel it if im close to a low conductor and i touch a piece of grounded metal, i get a shock equivalent to a balloon.
Any suggestions? A few months ago a new remotely controlled pole top switch was installed on the next street. It's on a 34.5Kv primary. Ever since then AM radio reception in this area is nothing but static. I called the power company to no avail. Even when I drive my car under that line the radio reception is blocked. What can I do to get that problem corrected? Thanks.
Very interesting. Some good engineering there. When you say primitive on the interlocks, I think maybe that is a good thing. You can at least see how it works not so much with software. Near where I live there is a transition from overhead cables on towers to underground cables. I think it is 132kv and it is quite loud more so when it has been raining. Nice video look forward to the next one :)
Good work. Don't be distracted by production values - it's what's coming from yer brain that matters and the content is focused and relevant to each episode. Disclaimer, I've only watched 3. So far.
I take it that your substation was still under construction (de-energized) while you were demonstrating the capacitor bank kirk interlock. I personally tested a new capacitor bank (start to finish) for a 115Kv substation. Provided about 43 megavars to the system.
I know Aluminum is cheap , just thinking that for the AAC you could go ACC, (copper), and get some better longevity out of the conduit expansion joints, or Did I miss something ....??
Morning SpeedFreak, I love this channel, what you do, and how you do it, That's the future of work I want to do. What's your official title and what did you get at school? I am currently a lost university student studying electrical engineering and am trying to find a place in power systems, any advice?
I am a Sr. Project Manager Operations for an electrical company. The future is power, its a recession proof industry. I went through an electrical apprenticeship 2005-2010 called WECA- IEC. I would be nothing without it. The best advice i could give is to learn a trade. It sucks at first making little money but the experience you gain is priceless and can never expire. Everyone needs power, plumbing, steel concrete etc etc. Choose a career that is recession proof.
@@spdfreakls1 Thanks for replying! It really does mean a lot to me. I'll see if there's a similar program in Ontario, hoping to land a co-op sometime soon! Keep making the videos man, you really are changing lives.
@@tooljockey2777 Utilities are great as they do have apprenticeships and have great benefits. I promise you will not regret it. Its 5 years of hard work but it will pay off. Don't go 8 months in and leave. Stick with it! Good luck!
Thank you, this is very interesting. You hear a lot of bad stuff about US power grid, but this site looks like it's very very well engineered and maintained. Subscribed!
nothing yet. MFG is coming out to take an oil sample since the DGA analyzer i talked about in this video is not yet hooked up in the other transformer yet. ill do a video after its all fixed. could be days or months.
Why are dry core reactors so common in the US? Here they are almost always the oil filled ones that look like a transformer. They are also usually variable.
Watched all 3 of your videos. Excellent for sure. The information you presented is simple enough for most folks and you didn’t launch into formulas and technospeak. I appreciate it. Thanks.
Thank you a lot for putting out these great videos, I just found your channel recently and I thoroughly enjoy watching and learning from you. I work as an electronics engineer in MEMS (micro-electro-motoric-systems) development, so this is the polar opposite end of the spectrum of what electrical engineering is used for..
I wouldn't call mechanical interlocks as _"primitive",_ but rather a worthwhile and necessary feature based on human fallibility. Idiot proofing is always advantageous. Thanks for sharing. 😉👌🏼
Even with all the interlocks, it still relies on the operator making the decision that it is cool to activate the system. If the operator is wrong for whatever reason, disaster can still strike. I've watched a guy go through a set of questions in a software system that are there to prevent erasing critical system info, and answer them all appropriately because his internal model of what was happening was wrong. The files got erased, and we were in deep doo-doo. A guy could be working on the cap bank, while the other guy thinks he's not, and could go through the whole rigamarole of ungrounding the caps, taking the key over to the other panel, and then activating the system. But it is a lot better than not having them. Moral is, think hard about what you are doing, and check your assumptions!
Submarine line terminals also have some neat interlocks going on. They supply power for the repeaters/amplifiers at the bottom of the ocean, can be thousands of volts (DC IIRC), so you don't want to be sticking your hands into something that could burn them off. There's usually a sequence of operations that must be performed in order to release keys that then allow the next set of operations to be performed, eventually leading to a safe system to work on Sometimes there's even operations that require two keys to be turned, so you need a second person and they are spaced far enough apart that one person cannot physically do it themselves.
Morning,
Some of us appreciate exactly what u do.
If you see the greener pastures and decide to head for it,
Ya just might end up in greener pastures
@@the_townleys working on substations is a part of a general electricians scope? im curious because up in canada we have electricians, linesmen, power system techs, instrumentation techs. so I wasnt sure what scope it would fall under.
Hi good morning.
There are those that build the buildings.thats a wireman electrician.
Then there are those that energize the building itself.those are LINEMAN.
Then you have those that ensure those lines stay energized.thats a Substation Electrician.
A Substation Electrician maintains all the components inside the Substation so the lines stay energized.
The only way to make it safe is to turn it off.😁
In order to maintain a piece of equipment inside the sub most of the time that piece of equipment needs to be taken out of service.
If it's a Transformer that needs to be maintained they will take that Transformer out of service install a mobile substation in some cases just to keep the power on for the public
@@the_townleys thats what i figured, probably going to be my second ticket. here in canada linesman deal with everything from the primary transmission to the primary side of the step down transformer. Got to work around a substation doing a backup generator for it. Got me more interested in taking substation tech as my second ticket in 4-5 years.
As a transmission system operator currently in training these videos are awesome. Due to covid they arent letting me into the field. Surge impedance loading (SIL) is the concept of when and why transmission lines will act either capacitive or reactive. During light loading, the lines will produce MVars, and during high loading they consume MVars. Managing system voltage using capacitor banks and reactor banks is something we do constantly in my control room.
Have been in the commercial electrical/electronics field for over 50 years and have always had an interest in high voltage transmission lines and substations, but have never worked on them. Your videos are fantastic in instruction and understanding their workings. I have often seen the rings (corona rings) on high voltage lines and now I know there purpose. When I was a teenage there were high voltage towers that ran over a large reservoir near our house. You could hear and see the corona discharge on humid summer nights, very strange to hear and watch. Keep sharing and Thanks.
Thank you for putting together this video. I'm totally fascinated by infrastructure--and am an infrastructure tourist. When I was 5, I lived in New Jersey. My parents gave me a book on New York City infrastructure... and begged my parents to take me to the places listed in the book. Decades later, I'm still fascinated by infrastructure and am still an infrastructure tourist. This is exactly the sort of video I love, the sort I watch time and time again.
For an EE major this is super-interesting, thank you and please keep on posting this type of content! Regards from the UK.
I’m glad guys like you share your knowledge and experience. I’ve learned so much over the years just watching TH-cam videos like yours. Thanks for sharing
5:58 LPL...Little click out of 5...3 is binding....nice click out of 1
redefines "and we have an open"
You forgot, "... And a big flash and bang out of phases 1, 2 and 3!"
Hahaha. LPL could cause havoc here
@@michael-gary-scott That's what she said!!!
B O O M
It’s really sorta neat the see the hairy, scary, grown up versions of what we see on a circuit board.
Thanks for the video. One the reasons you want to ground the capacitors is dielectric hystersis. Charge will reappear due charge stored in the dielectric.
@10:30 looks like someone forgot to tighten down the second u-bolt
really enjoy the content, keep it coming!!
This is really a cool video! It is great to see some of the safety features and the reasoning behind it.
Great video! I wish I had these when I was taking my NICET exams. I did primarily data center work, substations were scary black boxes to me. Keep up the good work!
That was really interesting to watch, even though I'm not connected with electrical work in any way (if you'll pardon the pun). I always wondered what those rings were for and now I know. Great video.
Your job is extremely cool! I’m pretty jealous not gonna lie!
Very Well Detailed..Thanks for sharing..
A few hundred houses down the road's lights are going on, off, on, off during these demos :D
Looks like the bottom clamp is finger tight at 10:34, great insight into yard stock.
Agreed, and the pierce bolts were not installed. Yard not fully completed yet ;)
Hey @SpeedFreakLS1. I believe the rings on the arrestors that are underhung on the deadend structure you called corona rings are actually Grading rings to ensure a uniform voltage across the arrestors. A lot of people call those corona rings but typically when they are on an arrestor their function is typically to act as a grading ring. Keep up the great videos though, there are a few people in our office that are really enjoying them!!!!
You are correct. Its technically both on that specific Hubbell arrestor. The ring around the hardware is the corona ring. The ring around the insulator is the grading ring. 1 piece with 2 functions!
Incredible videos. I work for a utility company in Zambia. I would love to come out there and appreciate different systems
Great video!
I am really enjoying this series - is there any device you can use to see the corona (except total darkness I suppose)
Look up COROcam
Uv sensitive camera with narrow band filters
Loving these vids, I can now have substation chat with my mate whos a line mechanic.
The 3rd interlock is like the lineman's version of an escape room
The corona shielding is interesting. Does the corona effect cause much in the way of RF interference with the instrumentation?
Edit: I love a physical interlock, primitive or otherwise. I trust them over a software interlock any day.
Hey you are awesome! I hope these are fetched for teaching in the University, instead of boring presentations; complementary at least. Isn't scary to you that sound being so close?
Great vid! What happened to your other vids of the transformers? (The walk-around, nameplate explanation, and the start up vids)
One of the substation owners politely asked me to remove due to some security concerns.
sometimes capacitor banks have timed kirk keys that have a mechanical timing actuator before it releases the key, so you dont just ground the capacitor straight away.
Really cool mechanical interlock, do you know who makes it? Was that the switch manufacture or someone else? Much better then Kirk Keys for an instance like that, basically fool proof.
Clean looking yard and control room. Enjoying the videos, makes me really miss substation work. Work safe.
15:05 "Corona"? Oh no, that's the forbidden word lol
At the dead end, you walked under the cables that sounds “life” isn’t that dangerous towalk under there. You hear scary things of people in substations. Btw aaaa that hum in de background lovely.
I know I'm late, but what about the loose pipe clamp at 10:40 second clamp down on the right. With it being part of an interlock I would think tight would be better.
Does the substation have any kind of lightening protection?
Always.
whatever lightning does to something when it strikes it,it does what it does and u fix it😁
You can see the surge arresters mounted on top of the transformers - they are the thin insulators with the large hoola hoop shaped things at the top. They are there to protect the transformers for lightning.
If the corona thing is so close to you would it be possible for it to jump an arc through your camera and bad things happen?
When you say 'reactor', is that an inductor (coil) ?
I have often noticed the sizzling, but had never heard about the Corona shields on sharp edges and bolts before, I find that fascinating.
When I hear an extra noisy pole, I just always assumed it was tracking over the insulator or something, but I guess it could just mean it has a sharp edge.
What's the minimum voltage that this is an issue with?
Typically anything 230kV and over gets the hardware and corona shields, but its all based on the engineering company.
I can't find any info on this, but I've been curious:
Why are some wires run in pairs for (what I assume is) the same voltage & phase (Say at 16:20, to the right of the poles)?
I'm thinking something with surface area, but I'm very unsure about it...
Have you ever heard of power line RFI causing interference on microwave bands?
heck i'd love to see a 345KV arc sometime. I know it's not good for the sub though, just cool to look at : )
You just reminded I had another video of one. I'll release it shortly. th-cam.com/video/7SKV2bGkq24/w-d-xo.html
th-cam.com/video/rnhob9zqY3w/w-d-xo.htmlsi=cT6R2Wy8IiWgM77p
@9:42 Am I correct in thinking that the interlock arm is secured to the shaft by the friction of the clamp?? I have seen clamps loose their original tension over time and in this case I wonder if this has been considered.
This would apply to the breaker interlock on the opposite shaft.
yes, but we have piercing bolts as well (not installed when I filmed). Those piercing bolts eliminate any slipping if bolts go loose. Great observation thought!
Grate input of info ,corona is not good causes corrosion, thanx for vid very interesting
Gret Video. Was curious is that nitrogen tank next to the transformer? Seen these transformer look like they have a conservator tank.
Do you get exposed to a substantial amount of ozone during the course of your typical day, and is there an OSHA limit on that cumulative exposure?
I’ve worked with SCADA interlocks and Kirk key interlocks. When these systems work as intended they save equipment and lives.
A key - can't go wrong with that because its a physical object you have to physically carry with you.
Can you imagine the result closing the circuit while its still grounded?
Thank you so much, way cool!!
Is it possible to have an automatic transfer switch with 3 power inputs?
Of course!
Given the high voltage, how much does heavy fog or haevy mist affect things?
The wind is tearing up the sound, but I see no blades spinning. Ron W4BIN
15:00 So that's where it came from! We need to tell the Chinese right now!
Informative
👍.
is it 60hz ac from the windfarm?
it would be nice if you rerecorded the audio to remove the wind noise. One of the most important parts was hard tounderstand because of it.
Also are you a relaytech?
@ 9:50 you could just undo the nuts and close both at once. That would be cool. Just saying.
This place exellent for Bitcoin Mining
Hahhahaahah!!!!!!
Putty cool
For the most part, I have little or no good understanding of what's really going here, I do however watch these videos in full.
Excellent content. Please don't "grow the channel" and "thank today's sponsor".
Great video, but please look at the details Two nuts are not screwed, the washers are moving when you are moving the handle, see picture: photos.app.goo.gl/VrPTUfTYe8GZuNsU9
Please read the description. The substation was not complete or punch listed.
Lets just hope we don't get hit with a CME from the sun or an EMP from jihady terrorist.
A+ love the video and the technology but on number 4 interlock on the right side discount , 2ed u bolt look litte lose J's
Really like how you explain the parts names and what they do! Such as corona ring. More videos please. Would be interesting to see you explain reactor banks and capacitors.
@Ronnie Roo Yeah the grid owners are making us put covers over them to prevent the corona from spreading 😄
The length and level of explanation is perfect. You’ve got a knack for this
Why would a turban need capacitors, they are just a type of hat
i'm a software engineer and i absolutely love interlock systems. i typically design the systems i build opposite most people - i put a lot of trips in them so that if conditions are outside of the expected parameters they fail. it's more difficult to build up front, but i think the payoff is well worth it when something goes wrong and rather than continuing to run it shuts off.
Same here. I've written online transaction processing systems, material handling systems and robotics. I thought that last mechanical interlock was truly beautiful, so simple, so elegant and effective. It's easy to design something that's needlessly complex; it's difficult to design something (that hasn't been designed before) that is simple and elegant.
Am i the only one wondering why that kirk kye system is thought and who royaly screwed up for som one tho invent that system
You’re right. For every one of these creative inventions, oddities, rules, regulations, etc... somebody, somewhere screwed up. Electricity takes no prisoners
This is awesome... subscribed! These places look terrifying to a newbie but the more you know the more you see how well engineered protection and safety is.
You’re right, substation protection is very well engineered, but it’s engineered by humans. I’m sure our guy here can tell you about all the engineering errors caught in the commissioning phase. “Trust, but verify” is the motto here.
I've worked on a few windfarms in the Midwest and up in Maine on the comms side so I spend all of my time in the control house and O&M buildings but I was always curious about how each component in the substation works together. Your videos have answered those questions ive had. Thank you!!!
Finally, someone give me a name for those corona ring ! Thank you so much !
One question: when you walk under the high voltage powered lines, do you wear a protective outfit ? Do you feel and are you exposed to a dangerous electrical field ?
No protection. Since the voltage is around us, and not going through us, there is no danger. The crazy amount of substation grounding and rock protect us. If there was 0 grounding and 0 rock and I was grabbing onto a ground rod near the conductors, i would get the crap shocked out of me. These are designed so there is 0 risk. I only feel it if im close to a low conductor and i touch a piece of grounded metal, i get a shock equivalent to a balloon.
Any suggestions? A few months ago a new remotely controlled pole top switch was installed on the next street. It's on a 34.5Kv primary. Ever since then AM radio reception in this area is nothing but static. I called the power company to no avail. Even when I drive my car under that line the radio reception is blocked. What can I do to get that problem corrected? Thanks.
Very interesting. Some good engineering there. When you say primitive on the interlocks, I think maybe that is a good thing. You can at least see how it works not so much with software. Near where I live there is a transition from overhead cables on towers to underground cables. I think it is 132kv and it is quite loud more so when it has been raining. Nice video look forward to the next one :)
Another amazing video! Thanks so much
Good work. Don't be distracted by production values - it's what's coming from yer brain that matters and the content is focused and relevant to each episode. Disclaimer, I've only watched 3. So far.
I take it that your substation was still under construction (de-energized) while you were demonstrating the capacitor bank kirk interlock. I personally tested a new capacitor bank (start to finish) for a 115Kv substation. Provided about 43 megavars to the system.
I know Aluminum is cheap , just thinking that for the AAC you could go ACC, (copper), and get some better longevity out of the conduit expansion joints, or Did I miss something ....??
Morning SpeedFreak, I love this channel, what you do, and how you do it, That's the future of work I want to do. What's your official title and what did you get at school? I am currently a lost university student studying electrical engineering and am trying to find a place in power systems, any advice?
Substation pre-apprentice puts you there🤫😁
I am a Sr. Project Manager Operations for an electrical company. The future is power, its a recession proof industry. I went through an electrical apprenticeship 2005-2010 called WECA- IEC. I would be nothing without it. The best advice i could give is to learn a trade. It sucks at first making little money but the experience you gain is priceless and can never expire. Everyone needs power, plumbing, steel concrete etc etc. Choose a career that is recession
proof.
@@spdfreakls1 Thanks for replying! It really does mean a lot to me. I'll see if there's a similar program in Ontario, hoping to land a co-op sometime soon! Keep making the videos man, you really are changing lives.
@@tooljockey2777 Utilities are great as they do have apprenticeships and have great benefits. I promise you will not regret it. Its 5 years of hard work but it will pay off. Don't go 8 months in and leave. Stick with it! Good luck!
SpeedFreakLS1 100% agree with that statement! Great videos by the way.
Outstanding information, explanation, and video quality. 👍
Thank you, this is very interesting. You hear a lot of bad stuff about US power grid, but this site looks like it's very very well engineered and maintained. Subscribed!
It's probably brand new, for those wind turbines they're just putting in like the one he pointed out in the background
I love this type of info. Get a ded cat for your mic!
That seems like a pretty smart mechanism
What is your job title if you don’t mind me asking
Electricity his highly overrated.
Why do most substations not have roofs?
Cool ABB stuff.
Better stay away from the corona!
I love these videos. I want to work in this industry so bad. What happened with the 345kv high-temp transformer you showed last week?
nothing yet. MFG is coming out to take an oil sample since the DGA analyzer i talked about in this video is not yet hooked up in the other transformer yet. ill do a video after its all fixed. could be days or months.
Why are dry core reactors so common in the US? Here they are almost always the oil filled ones that look like a transformer. They are also usually variable.
Great Question! I believe its cost. Most of them are not made in the US so they must be shipped long distances.
Far out man. Good vid.
5:00 and how often this unit itself needs to be sent for calibration?
Great question! I'm not sure. Honestly I doubt zero calibration unless a problem pops up. Not saying that's right, just staying that's what I believe
So all the Resident Evil puzzles are kind of accurate.
That interlock is just like the railway semaphores from them 1800s. Flawless.
Very interesting, specifically the reactors to deal with the Ferranti effect
You said this for a wind farm Where is the synchronizing done so this can be tied with the grid?
Enormous Conservators. Gorgeous transformers and station.
Watched all 3 of your videos. Excellent for sure. The information you presented is simple enough for most folks and you didn’t launch into formulas and technospeak. I appreciate it. Thanks.
Thank you a lot for putting out these great videos, I just found your channel recently and I thoroughly enjoy watching and learning from you. I work as an electronics engineer in MEMS (micro-electro-motoric-systems) development, so this is the polar opposite end of the spectrum of what electrical engineering is used for..
I wouldn't call mechanical interlocks as _"primitive",_ but rather a worthwhile and necessary feature based on human fallibility. Idiot proofing is always advantageous.
Thanks for sharing. 😉👌🏼
Even with all the interlocks, it still relies on the operator making the decision that it is cool to activate the system. If the operator is wrong for whatever reason, disaster can still strike. I've watched a guy go through a set of questions in a software system that are there to prevent erasing critical system info, and answer them all appropriately because his internal model of what was happening was wrong. The files got erased, and we were in deep doo-doo.
A guy could be working on the cap bank, while the other guy thinks he's not, and could go through the whole rigamarole of ungrounding the caps, taking the key over to the other panel, and then activating the system. But it is a lot better than not having them. Moral is, think hard about what you are doing, and check your assumptions!
Submarine line terminals also have some neat interlocks going on. They supply power for the repeaters/amplifiers at the bottom of the ocean, can be thousands of volts (DC IIRC), so you don't want to be sticking your hands into something that could burn them off.
There's usually a sequence of operations that must be performed in order to release keys that then allow the next set of operations to be performed, eventually leading to a safe system to work on
Sometimes there's even operations that require two keys to be turned, so you need a second person and they are spaced far enough apart that one person cannot physically do it themselves.