Substations: Basic Principles | Circuit Breakers | Disconnectors | Relays | CTs & VTs | Arresters

A quick look into the main assets inside an electrical substation, including the Voltage Transformers (VTs) and Current Transformers (CTs), Disconnectors, Circuit Breakers, Relays and Transformers. Let's see how they work individually and as a team to perform the necessary functions of the substation.
Substations are key to the operation of the power system. A new video on power system protection is coming soon....

[@VisualElectric_]

What assets would you like to see in Part 2 of this video? 🤔

[@d.militomilito2002]

GREAT the technological part, for instance: IED,MU, BCU, switches and so on please

[@faithdenelzen8808]

Great representation of the substation assets. There's a substation that interests me in Melbourne Australia called the Keilor Terminal Station. I don't know why these interest me but hey

[@MoussaKHALFI-zt8kr]

Whatever you choose for us, i am sure it is the best!

[@ihatnecksered]

Perfect description of my last 30 years at work on maintenance and repair of subs. Thanks.

[@kboy9692]

im working on a thesis titled a 10mva substation protection system upgrade, now they want me to evaluate the protection system first, how do i do it? any tips? pls

[@MoussaKHALFI-zt8kr]

Wow

[@BostonKnick]

Just applied for a position as a substation technician (currently a network maintenance technician at a pretty prominent network company in boston mass) the operations, and mechanics within a substation intrigues me so much and I'm really hoping i land this job.....absolutely loved this detailed video...comments here are awesome as well

[@samriggio]

How'd it go with the job application? 🤞

[@BostonKnick]

@@samriggio sir?.....i kid you not but literally (this morning) i received an email from the recruiter that they chose me for the position!!!!..I can't tell you how happy this makes me. I am just so extremely grateful and consumed by all types of emotions this morning and just very eager to get started on my new career. Thank you for asking sir!!

[@ThatdudeJaden]

@@BostonKnickHow is the job going until now?

[@BostonKnick]

@@ThatdudeJaden thank you so much for asking, in a few days from now I'll be literally here for 2 months and so far the information is very overwhelming....but it's a 3 years apprenticeship program so I have time but it's just so eye opening and informative. I'm loving it so far and even the culture here is amazing. Like I said, just so much to learn and take in from prints, symbols, switching orders, procedures, and components....it's going to take a little to get everything down.

[@ThatdudeJaden]

@@BostonKnick amazing, bless you man i hope all goes well in your electrical carreer

[@RaheelSyed]

Very nice illustration of an Outdoor substation and its equipments. Would appreciate a video on Protection schemes and Busbar arrangement schemes. Thanks!

[@rebekahrakestraw344]

Thank you for these great presentations. I am new to relays and learning from guys who've been here for many years. I hear their words but have no idea what that piece of equipment looks like. I look at substation prints, and it all a foreign language. Your videos are a very necessary visual for me. You have really helped me put the pieces of the puzzle together. Thank you.

[@CharlieTechie]

Outstanding presentation of an electric substation.

[@bloodynaura1430]

Good explanation, simple and to the point. Doesn't try to over complicate it.

[@iceboy8643]

Awesome Video! We call it a Ground Grid here in the US.

[@MoussaKHALFI-zt8kr]

Amazing explanation, highly recommanded!

[@michaelma4373]

Thanks for the explanation.. very clear and great visual

[@gilbertgababonwe704]

Wonderful explanation. Thank you

[@jacobjohn9217]

VERY HELPFUL AND THANK YOU FOR DESCRIPTION

[@maksim_belostozky]

Спасибо большое! Изучаю вместе с вами английский язык!)

[@user-lh5uj8vb7b]

Thanks very educational and very well explained.....

[@baylegend9295]

Thank you for this interesting video!

[@afghaneuropeanfoods]

very very nice and easy to understand, thanks

[@hamradiojim6788]

Well now, that was exciting! Thanks!

[@ekojadi123]

Simple but very well explained

[@leotexas3485]

Great explanation!

[@williamfairfaxmasonprescot9334]

#thankyou intriguing and educational

[@transmissionlines3726]

great summary

[@walidkhodor2257]

Nice & Easy, thank you

[@GeorgeAlbercook]

Great explanation! I was hoping that you were going to explain reclosers. I would like to understand how the old oil filled mechanical ones could "count" the number of re-close attempts and vary the time all without stable power.

[@user-sg5np3tb6c]

Power Circuit Reclosers (PCR) are smaller Power Circuit Breakers (PCB). Inside the breaker there is a mechanical counter in a open circuit that is connected to the trip recoiler. When the breaker opens. The open circuit is closed powering the counter to increase by one. It also sends to the information to the relay that controls the breaker. The old oil filled breakers function in a similar way.

[@MisterKingBing]

Hi George. On those old oil filled reclosers, they use the oil in the recloser in a hydraulic circuit. Those reclosers trip by pulling a plunger into a coil/solenoid type setup. The coil size determines the trip amps of the recloser. When the coil has enough current running through it the plunger gets pulled down and into the coil. There is also a pump piston connected to a linkage connected to the plunger. That pump piston pumps oil though channels in the frame of the recloser mechanism. As this oil moves through the channels, it pushes up on a trip piston. That oil escapes back into the tank of the recloser through small orifices in the frame. When the recloser is operating on its fast operations, the oil escapes from two orifices. When the recloser is operating on its slow or delayed operations, the oil can only escape from one orifice as oil is constantly pushing up on the trip piston as it operates. The recloser trips and closes until enough oil has pushed up on the trip piston to make it bump a lever that will lock out the recloser and drops the yellow operating handle. That's it in a nutshell.

[@ten-bob-note]

Excellent introductory video. Any chance of a video about substation shunt-reactors? Probably too niche, but no harm in asking.

[@sohailjanjua123]

Hi, I like your video. Thanks

[@adnanshaukat6327]

Thanks you for sharing 😊

[@fabianmaphane931]

i really enjoyed watching your video..great explanation..thanks

[@s.celectricalconnection4148]

thank you for that sharing sir

[@claudioerra1284]

Very interesting and well done. Thank you. I am an Italian teacher and I would like to publish the same video on my YT channel but with an Italian voice speaking for my students. Can I? Of course I would mention your channel in the video description. Please let me know.

[@jkkung4944]

Thank you!

[@5amsquad778]

Great video thank you

[@anamdineslami3396]

خوب

[@runbou3485]

thanks you អគុណ

[@eng.jacquesm.ndayizeye7384]

thank you

[@AsanMasraf]

thanks for all these efforts. you mentioned in the description (A new video on power system protection is coming soon....) can you give us the link to that video.

[@VisualElectric_]

I have an overcurrent protection video posted last year and some more coming up when I have the time, thanks.

[@VENTUScables]

What about protection on the LV side of a transformer on large scale battery storage sites?

[@hassanuddin6104]

great

[@abmakmur]

Nice

[@baltimorejay_1]

I saw Amtrak had an opening for a substation trainee so I wanted to see what it’s about, I always wanted to do something like this but I feel like it’s too much for me to understand

[@alexwest2383]

I would have also added Cap Banks on to this

[@jamesmhango2619]

Voltage regulator?

[@honda5233]

How can I add that to my oculus quest 2?

[@mulawbelay9736]

ደህና ነን እስካሁን ዶክተር አላያትም እየጠበቅን ነው

[@kennethc9996]

CenterPoint Energy here I come 😏

[@riaang2002]

Just a bit of nitpicking. Is the switch that you call a disconnector not just an isolator? Disconnectors are used to diconnect lines under load where as isolators are used to isolate under no load conditions.

[@adrianfrancis1156]

Both are the Same thing. Disconnector and isolator.

[@nicklahey6244]

They do isolate, there not called isolators there typically called switches, but the used to isolate certain parts of each substation

[@Alexandr-wb5tu]

Lightning arrester is pretect equipments against overvoltage not frequency

[@Ramkumar-js6rl]

Lightning arrester

[@PacoOtis]

RATHER BORING AND QUITE TERRIBLY PRESENTED.