Really? So you were always interested in VA apparent power, eddy currents, lead/lag, power factors and Y-Y connections? That's amazing (prodigy level)!
@@pyk_ I will. Author mentioned he's been curious about this stuff since he was a child. I doubt there's many children on this planet that are interested in electrical transmission technology when they were very young. Tesla is the only one that comes to mind.
i don't have any electrical training, so some of the jargon and terms you used were a little beyond me, but, it was still a VERY interesting video that I enjoyed watching!
Thanks for these walkthroughs! They were super interesting and informative! I've always been curious about this stuff! It's amazing how "simple" it is from a high concept point of view.
I like to think of myself as having a fairly decent understanding of electronics but I have to admit, I look at some of these installations and have absolutely no clue what half of this stuff is doing! Thanks for your video, super educational.. they don't seem so mysterious any more 😊
I'm getting into building utility scale substations and transmission line for wind farms! Doing my first one ever! This is awesome! I'm excited to learn. Thank you for the helpful, informative video!
Are you an EE? I'm a recent EE grad, I'd like to find some opportunities to get into the Power and Energy field, particularly in sustainable energy. If you wouldn't mind sharing, I'd love to hear about what you're working on and how you got into the field!
@@ChrisBlackwood_KD2CXC Actually, I'm not an EE. I graduated about 2 yrs ago w/ a renewable energy degree. Looks for 3rd party testing companies (for substations) a couple of titles Test Engineer, P&C Engineer, etc or utility companies in your area so get a foot in the door with power and energy. Currently, I'm a field engineer for a construction company and got lucky to work with power pretty much.
Dude, I want to thank you for your videos!!!!!! Like the word thank you should not be enough for these fascinating videos!! That must help me with my interview as well. Thanks a lot Man!!
Great demonstration of the collector substation. For those who are wondering. The power flow is always from the generation (wind turbines) to the substation. A padmount transformer steps up the voltage from a low voltage level (depending on turbine, 690 V usually) to a medium voltage level (34.5 kV). Collector cables collect power from individual turbines and bring them to this substation which then steps the voltage from 34.5 kV to a high voltage level - 230 kV (or 345 kV depending on the point of interconnection). I would like to know if the point of common coupling is at the HV bus of the main power transformer at this substation or if there is a gen-tie line provided by the utility to connect to their HV substation?
I believe turbines produce lower voltage, and if this substation has anything to do with the turbines it must be other way around (low voltage is input, high voltage - output). Or did I miss something?
@@ellayararwhyaych4711 I am glad I am not the only one who saw that, I was waiting for him to point to the out going cable to the local distribution network.
Lol I find that sound rather scary, knowing that there's potential difference of almost 3,45,000V between him/his camera and the cables running overhead.
The PTs look very much like Trench Capacitive Voltage Transformers. I worked at GE, where we made Watthour meters, CTs, and PTs. We didn't get into Capacitive dividers though - just the ferromagnetics.
Power comes from the transformer to the switch, to the switch with a different job, to another switch with a different job, to a breaker with is basically a switch, to another switch, so it can be switched manually or with the motor, and then connect to the grid with a switch.
When the circuit is disconnected from the grid, how does the turbin knows the phase to adjust for before turning the switches back to grid? I guess regulating frequency is not too hard, with crystal oscilators, and when the circuit is closed it will adjust quickly to the grid. But if the phase is skewed closing the switches could be a serious issue. Is there a smaller feed from substation to towers to power the some auxilary electronics and to detect the phases, then wait until all generators are synchronized? Or maybe there is some other techniques used? Like turbines on purpose are lagging in frequency a bit, so the phase slowly moves, and when everything aligns, then turn the switch back to grid? Just wondering.
Great question. When the turbines are on (but not producing power) they are using power from the grid for electronics, motors, pitch motors, FAA light etc. When the blades pitch into the wind and the generator starts producing power, there is a phase synchronizer that matches grid power before the main disconnect closes attaching the generator to the grid, it will sense the frequency and adjust. ALL of these modern turbines cant produce a lick of power on their own. They must have power to make power.
@@spdfreakls1 I do understand that part. But what if the set of turbines are isolated from the substation? Do they have anti-islanding detection and disconnect generators from the transmission line / transformer? If there is one turbine working on a isolated circuit, the others will not know that they are on isolated circuit. At least not easily. I was interested when you are allowed to turn the main disconnect switch in the substation back again to be closed? My guess the safest would be to do this only when all turbines are disconnected from it. This has two advantages: 1) no load, so no arcing. 2) turbines then can do phase synchronization one by one on their own.
@@movax20h I think i follow you. When the substation breaker opens, the turbines instantly see this and open their disconnects as well. There will not be any turbines isolated and producing power. They are either closed in at their breakers and able to produce power, or they are disconnected from the grid and not making power. I should clarify that the main breaker at the turbine supplies power to the Aux power for the turbine. There is a separate contact for when the turbine is spinning and ready to produce power. Before this contactor closes, it synchronizes with the phasing then closes in.
@@spdfreakls1 Interesting. Thanks. I did read some papers on this, but it it was unclear what procedures are actually used. But I think you are right, it should be easy for the turbine to see the drop of the load, and disconnect. Rest is as you said.
Ah so actually those are step-up transformers feeding the grid power from the wind farm! In terms of the current flow your walkthough is technically back to front..? But still very informative and interesting. I guess we are going to see more and more of these types of installations over the coming years as we move more toward renewable sources.
Line traps and line tuners are for communication over the actual high voltage conductor. They are communication devices. Reactors and capacitors are power factor correction devices.
@@donberg01 for the turbines everything is fiber. for transmission lines, yes, some utilities use this type of communication to talk relay to relay. Here is some information on them. en.m.wikipedia.org/wiki/Line_trap#:~:text=A%20line%20trap%2C%20also%20known,line%20communication%20to%20unwanted%20destinations.
@Bill delete I did further research: To prevent short circuiting from destroying the circuit breakers a current limiting reactor is connected in series with each phase of the feeder, the reactance must be high enough to keep the current below the interrupting capacity of the circuit breaker but not so high as you produce a large voltage drop under under full load conditions current limiting reactors are connected in series with a high-voltage line. in other words the XL is limiting the current to protect the equipment.
There is something cool about seeing/hearing all that power and knowing it's coming from the wind spinning the turbines. Are turbines actually designed to output at a fixed frequency of 50/60 hz and a fixed voltage, or is that all done at a different stage?
Always a fixed frequency of 60 Hz in North America. Most large scale power plants (I.e. steam, hydro, gas combustion) all use synchronous generators - in other words, the generator is run up to it’s synchronous speed/RPM so that it’s output frequency is “synced” or matched to the grid before the generator breaker is closed. Wind turbines typically have asynchronous generators - their frequency and output is independent of that of the grid because the power it produces is changed to match grid frequency in a power conversion process. But yes, all utility sized generators are designed to operate at a fixed output voltage. Voltage is changed accordingly using generator step up transformers before it interconnects with the transmission or distribution grid.
@@johndeere772002 Interesting so are the wind turbines just geared up/down to keep the generator at the right speed while also adjusting tilt angle of blades to get the best power? I always assumed they just got converted to DC then to 60hz after the fact, but it kind of makes sense to just do it right at the turbine to skip a conversion step.
@@redsquirrelftw Most of them operate at constant speed and adjust the blades tilt. This way relatively simple transformers can be used. The transformer can also act as a electric break if the load suddenlty is disconnected and the rotor still is rotating due to inertia. There are systems that do convert the generator to DC and then back to AC using an rectifiers and inverter, but as you can get 1MW inverter is not a small or cheap thing. And you might need a bank of resistors to help with some breaking. It can get complex. Adjusting frequency is easier of course with the inverter, and you can run the blades in the wider range of speeds, even with fixed blades. The small turbines (
Great Video! they do not use AC and DC JB in the yard? do they bring AC and DC power directly from the SST JB that is in the inside of the Control B? do you have a video of the Control shack? Thank you
Best way is to consider all the devices in the yard are controlled via DC. The AC simply powers the lights, building AC, and battery chargers to keep the DC up.
@@spdfreakls1 Correct. Thank you for answering. Some places use outdoor AC JB's for the heaters of the control cabinets of the HV Breaker and power transformer. but I like the way you did bringing AC to the yard form the C. Building without ACJBC . Thank you again. Just wondering if you a video for all the AC and DC panels or load centers inside of the C. Building. ?
Its either or. When the turbines are not producing power the utilize some power. The to and from was only for demonstration purposes. Voltage is in all directions but current can flow one direction or the other depending on the situation. Note the with no utility power the turbines will not start. The wind turbines do not have the ability to produce auxilary power to run themselves.
@@spdfreakls1 so each turbine puts out 34.5kV? I had no idea they run at such HV. And you simply connect multiple power sources together to form a bus? Even if frequency is perfectly sync, would there not be quite high cross-currents between power sources that have slightly different voltages?
@@RandomUser2401 depends on the turbine. Most of the generators produce 600-690 volts. Either at the bottom outside the turbine or inside the turbine at the top is a transformer that bumps it up to 34.5kV.
Good luck trying to keep the power factor at unity (1) because the load would have to be resistive to achieve that. Probably the best hope is 0.9 but loads such as fluorescent lights (containing ballasts) seem to always call for a certain capacitor value to keep the power factor at 0.8 for some reason !
I'm not too familiar with wind energy, but can you explain why there is power flowing to the turbines? I thought they generated power, so what's the purpose of sending power to them?
All the devices in the substation are agnostic to power flow direction. Turbines do require power to operate, used for blade pitch and direction controls, utility electronics, heaters in cold climates, cooling for the turbine proper, and starter motors, and can draw power from the grid if they are all idle. However yes, generally in operation the power will go the other way, towards the grid.
Good question, all of the generators themselves in the turbines are around 400-690 volts. But many turbines have their own transformers either in the top or outside at the bottom. In the US, whatever voltage that turbine produces is converted to 34,500 volts since the underground cable is easy to find, and electrical equipment is made for this voltage.
I wondered the same thing. So the turbines are generating the power, it goes into the sub at 34.5kV, is converted UP to 345kV and out to the grid? Since you started with the high voltage,I thought it was coming in, down-converted, and out for later conversion to utility power.
@@KutWrite These new turbines won't run without power from the grid. They need power to start producing power. A transformer transforms power both directions, it doesn't matter to it. So best way to say in this case is the voltage comes from the grid and is stepped down, once the turbines are running, its feeding amps to the grid.
For those tiny generators it's probably electronically regulated, but the big ones use a really neat trick: Generators and (3-phase) motors are the same thing, just optimized a little bit differently. So if you connect a generator to the grid but not to its energy source, it will rotate in sync with the grid's frequency. Or in other words, the grid will try to keep the rotor in the position that matches the positions of all the generators in the grid exactly. When you now put load onto that generator (so it can actually generate and isn't a motor anymore), this still applies. If the load wants to push it ahead of the grid, it pushes the grid along (adding energy) but only a tiny bit (it would have to speed up all other generators to shift the grid's phase). If it wants to slow it down, it has to work against the momentum of the whole grid (using energy). Not sure if you needed that info, but there are a couple thousand more people watching this. Good chance most of them have no idea how that works.
Yes. If they are not producing power they use power for electronics and hydraulic systems. Each 35kv feeder will be using 20-40 amps depending in feeder length and auxiliary equipment.
Great question!! Each turbine has phase synchronization device that allows them to match frequency. They get super hot but allow the turbines to constantly change speeds and sync to the grid. I am not sure of the efficiency of the device.
Here is an article to check out! www.google.com/url?sa=t&source=web&rct=j&url=pdfs.semanticscholar.org/db6a/296589ae83fe49df77f897b5ab81589598dd.pdf&ved=2ahUKEwiC6IrIlfvqAhUPna0KHQPIDjIQFjAAegQIARAB&usg=AOvVaw0ihjLLilp8St73Ajo6EpGL
Cool video but you're basically explaining half of the story. You're not exclusively stepping 345kv down to 34.5kv. When generating and synced, the turbines are sending 34.5kv to the station and you're stepping it up to 345kv for grid transmission. But good video otherwise!
@@spdfreakls1 in my company everything is large enough to turn one transformer off and these 34kV kabels do not look that thick, that one transformer couldn't handle it. Also our switches between the secondary sites are bigger, so we don't have to turn off one first
I dont know the right words to explain it in english that well, also i would like more people to watch this to understand what we are doing and how special it is
Well-educated humans are capable of some serious shit.
@Mister Brookes they’re equally important I’d say.
They have a secret technique called universal manipulation.
You know alot of those watching, like me, have wanted to know what all this stuff did since we were kids!😁
You got that right! :)
Really? So you were always interested in VA apparent power, eddy currents, lead/lag, power factors and Y-Y connections? That's amazing (prodigy level)!
Absolutely! Well said
@@ellayararwhyaych4711 Would you explain how being interested in how a power substation works make a child prodigy level?
@@pyk_ I will. Author mentioned he's been curious about this stuff since he was a child. I doubt there's many children on this planet that are interested in electrical transmission technology when they were very young. Tesla is the only one that comes to mind.
i don't have any electrical training, so some of the jargon and terms you used were a little beyond me, but, it was still a VERY interesting video that I enjoyed watching!
Thanks for these walkthroughs! They were super interesting and informative! I've always been curious about this stuff! It's amazing how "simple" it is from a high concept point of view.
I like to think of myself as having a fairly decent understanding of electronics but I have to admit, I look at some of these installations and have absolutely no clue what half of this stuff is doing! Thanks for your video, super educational.. they don't seem so mysterious any more 😊
I'm getting into building utility scale substations and transmission line for wind farms! Doing my first one ever! This is awesome! I'm excited to learn. Thank you for the helpful, informative video!
Are you an EE? I'm a recent EE grad, I'd like to find some opportunities to get into the Power and Energy field, particularly in sustainable energy. If you wouldn't mind sharing, I'd love to hear about what you're working on and how you got into the field!
@@ChrisBlackwood_KD2CXC Actually, I'm not an EE. I graduated about 2 yrs ago w/ a renewable energy degree. Looks for 3rd party testing companies (for substations) a couple of titles Test Engineer, P&C Engineer, etc or utility companies in your area so get a foot in the door with power and energy. Currently, I'm a field engineer for a construction company and got lucky to work with power pretty much.
Nice! Would love to see more substation vids
These are "just like your breakers in your house", just a little bit bigger
Dude, I want to thank you for your videos!!!!!! Like the word thank you should not be enough for these fascinating videos!! That must help me with my interview as well. Thanks a lot Man!!
Great demonstration of the collector substation. For those who are wondering. The power flow is always from the generation (wind turbines) to the substation. A padmount transformer steps up the voltage from a low voltage level (depending on turbine, 690 V usually) to a medium voltage level (34.5 kV). Collector cables collect power from individual turbines and bring them to this substation which then steps the voltage from 34.5 kV to a high voltage level - 230 kV (or 345 kV depending on the point of interconnection).
I would like to know if the point of common coupling is at the HV bus of the main power transformer at this substation or if there is a gen-tie line provided by the utility to connect to their HV substation?
I believe turbines produce lower voltage, and if this substation has anything to do with the turbines it must be other way around (low voltage is input, high voltage - output). Or did I miss something?
I caught that too - you got it right. He just walked us backwards through the equipment - this substation is a 10x step-up station.
You're right
nah guys you're all wrong, This is to spin the fans faster and stop climate change by cooling the world down ;)
@@ellayararwhyaych4711 I am glad I am not the only one who saw that, I was waiting for him to point to the out going cable to the local distribution network.
Nope, it's how we make wind from electricity.
Awesome. Always wonder and wanted to know how all that works. Thankyou for posting these!
I like that sound near electric substations
I like you
@@Bankable2790 aw thsnks
@@Bankable2790 lame
FROYOLOLO`` want to go out some time
Lol I find that sound rather scary, knowing that there's potential difference of almost 3,45,000V between him/his camera and the cables running overhead.
The PTs look very much like Trench Capacitive Voltage Transformers. I worked at GE, where we made Watthour meters, CTs, and PTs. We didn't get into Capacitive dividers though - just the ferromagnetics.
Power comes from the transformer to the switch, to the switch with a different job, to another switch with a different job, to a breaker with is basically a switch, to another switch, so it can be switched manually or with the motor, and then connect to the grid with a switch.
When the circuit is disconnected from the grid, how does the turbin knows the phase to adjust for before turning the switches back to grid? I guess regulating frequency is not too hard, with crystal oscilators, and when the circuit is closed it will adjust quickly to the grid. But if the phase is skewed closing the switches could be a serious issue. Is there a smaller feed from substation to towers to power the some auxilary electronics and to detect the phases, then wait until all generators are synchronized? Or maybe there is some other techniques used? Like turbines on purpose are lagging in frequency a bit, so the phase slowly moves, and when everything aligns, then turn the switch back to grid? Just wondering.
Great question. When the turbines are on (but not producing power) they are using power from the grid for electronics, motors, pitch motors, FAA light etc. When the blades pitch into the wind and the generator starts producing power, there is a phase synchronizer that matches grid power before the main disconnect closes attaching the generator to the grid, it will sense the frequency and adjust. ALL of these modern turbines cant produce a lick of power on their own. They must have power to make power.
@@spdfreakls1 I do understand that part. But what if the set of turbines are isolated from the substation? Do they have anti-islanding detection and disconnect generators from the transmission line / transformer? If there is one turbine working on a isolated circuit, the others will not know that they are on isolated circuit. At least not easily. I was interested when you are allowed to turn the main disconnect switch in the substation back again to be closed? My guess the safest would be to do this only when all turbines are disconnected from it. This has two advantages: 1) no load, so no arcing. 2) turbines then can do phase synchronization one by one on their own.
@@movax20h I think i follow you. When the substation breaker opens, the turbines instantly see this and open their disconnects as well. There will not be any turbines isolated and producing power. They are either closed in at their breakers and able to produce power, or they are disconnected from the grid and not making power. I should clarify that the main breaker at the turbine supplies power to the Aux power for the turbine. There is a separate contact for when the turbine is spinning and ready to produce power. Before this contactor closes, it synchronizes with the phasing then closes in.
@@spdfreakls1 Interesting. Thanks. I did read some papers on this, but it it was unclear what procedures are actually used. But I think you are right, it should be easy for the turbine to see the drop of the load, and disconnect. Rest is as you said.
@@spdfreakls1 Very cool.. I have always wondered about the phase and now I know.. Thanks for the videos and the explanation.
Ah so actually those are step-up transformers feeding the grid power from the wind farm! In terms of the current flow your walkthough is technically back to front..? But still very informative and interesting. I guess we are going to see more and more of these types of installations over the coming years as we move more toward renewable sources.
Wow awesome video, I always wondered whats going on in sub-stations
Could you do a tour of the building that is located there?
I would like a further explanation on "line traps" & "line reactors" thanks, great vid!
Line traps and line tuners are for communication over the actual high voltage conductor. They are communication devices. Reactors and capacitors are power factor correction devices.
@@spdfreakls1 So the high voltage cables also carry voice/data won't the high voltage cause interference being so close in proximity to each other?
@@donberg01 for the turbines everything is fiber. for transmission lines, yes, some utilities use this type of communication to talk relay to relay. Here is some information on them. en.m.wikipedia.org/wiki/Line_trap#:~:text=A%20line%20trap%2C%20also%20known,line%20communication%20to%20unwanted%20destinations.
@Bill delete I did further research:
To prevent short circuiting from destroying the circuit breakers a current limiting reactor is connected in series with each phase of the feeder, the reactance must be high enough to keep the current below the interrupting capacity of the circuit breaker but not so high as you produce a large voltage drop under under full load conditions current limiting reactors are connected in series with a high-voltage line.
in other words the XL is limiting the current to protect the equipment.
@Bill delete understood, inductance reaction XL opposes the change in current like a ballast in a fluorescent fixture.
power goes from the transformer to windmill or from wind turbine to transformer
id like to have a job as an engineer but theres just so many choices, but this is still very interesting
I wonder how different these structures need to be designed for use in wet climate
That was very interesting, have my like.
There is something cool about seeing/hearing all that power and knowing it's coming from the wind spinning the turbines. Are turbines actually designed to output at a fixed frequency of 50/60 hz and a fixed voltage, or is that all done at a different stage?
Always a fixed frequency of 60 Hz in North America. Most large scale power plants (I.e. steam, hydro, gas combustion) all use synchronous generators - in other words, the generator is run up to it’s synchronous speed/RPM so that it’s output frequency is “synced” or matched to the grid before the generator breaker is closed.
Wind turbines typically have asynchronous generators - their frequency and output is independent of that of the grid because the power it produces is changed to match grid frequency in a power conversion process.
But yes, all utility sized generators are designed to operate at a fixed output voltage. Voltage is changed accordingly using generator step up transformers before it interconnects with the transmission or distribution grid.
@@johndeere772002 Interesting so are the wind turbines just geared up/down to keep the generator at the right speed while also adjusting tilt angle of blades to get the best power? I always assumed they just got converted to DC then to 60hz after the fact, but it kind of makes sense to just do it right at the turbine to skip a conversion step.
@@redsquirrelftw Most of them operate at constant speed and adjust the blades tilt. This way relatively simple transformers can be used. The transformer can also act as a electric break if the load suddenlty is disconnected and the rotor still is rotating due to inertia. There are systems that do convert the generator to DC and then back to AC using an rectifiers and inverter, but as you can get 1MW inverter is not a small or cheap thing. And you might need a bank of resistors to help with some breaking. It can get complex. Adjusting frequency is easier of course with the inverter, and you can run the blades in the wider range of speeds, even with fixed blades. The small turbines (
Is there a summer/winter schedule for lead/lag?
Great video. I always thought transmition was done with a delta configuration and not a star. Why is it a star configuration on the transformer?
I believe star (wye) is needed for the tap changer and to cut down on the fault current.
Voltage and Current are inversely proportional.
Great Video! they do not use AC and DC JB in the yard? do they bring AC and DC power directly from the SST JB that is in the inside of the Control B? do you have a video of the Control shack? Thank you
Best way is to consider all the devices in the yard are controlled via DC. The AC simply powers the lights, building AC, and battery chargers to keep the DC up.
@@spdfreakls1 Correct. Thank you for answering. Some places use outdoor AC JB's for the heaters of the control cabinets of the HV Breaker and power transformer. but I like the way you did bringing AC to the yard form the C. Building without ACJBC . Thank you again. Just wondering if you a video for all the AC and DC panels or load centers inside of the C. Building. ?
Explain to me how 345kv is going from high side to low. Isn't the other way. Turbines g o on line and are converted from 34.5kv step up t o 345kv
Its either or. When the turbines are not producing power the utilize some power. The to and from was only for demonstration purposes. Voltage is in all directions but current can flow one direction or the other depending on the situation. Note the with no utility power the turbines will not start. The wind turbines do not have the ability to produce auxilary power to run themselves.
@@spdfreakls1 so each turbine puts out 34.5kV? I had no idea they run at such HV. And you simply connect multiple power sources together to form a bus? Even if frequency is perfectly sync, would there not be quite high cross-currents between power sources that have slightly different voltages?
@@RandomUser2401 depends on the turbine. Most of the generators produce 600-690 volts. Either at the bottom outside the turbine or inside the turbine at the top is a transformer that bumps it up to 34.5kV.
@@spdfreakls1 ah okay I see, that makes sense :)
Good luck trying to keep the power factor at unity (1) because the load would have to be resistive to achieve that.
Probably the best hope is 0.9 but loads such as fluorescent lights (containing ballasts) seem to always call for a certain capacitor value to keep the power factor at 0.8 for some reason !
Well CFLs are slowly being replaced by LEDs, which I think target and come close to 0.95, it'd improve in future I suppose.
I'm not too familiar with wind energy, but can you explain why there is power flowing to the turbines? I thought they generated power, so what's the purpose of sending power to them?
All the devices in the substation are agnostic to power flow direction. Turbines do require power to operate, used for blade pitch and direction controls, utility electronics, heaters in cold climates, cooling for the turbine proper, and starter motors, and can draw power from the grid if they are all idle. However yes, generally in operation the power will go the other way, towards the grid.
They also need the utility power for phase synchronization and everything else MC mentioned
@@MClightOfDay Wow, Thank you for a Great answer.
Does Siemens make all of the transformers? Who makes the circuit breakers?
This is fascinating, thanks.
What are those various pole-like things sticking up in the air, is that lightning protection?
Yup
You have an awesome job 😁
So the 34 K volts are coming from the wind turbines alone ?
Good question, all of the generators themselves in the turbines are around 400-690 volts. But many turbines have their own transformers either in the top or outside at the bottom. In the US, whatever voltage that turbine produces is converted to 34,500 volts since the underground cable is easy to find, and electrical equipment is made for this voltage.
I wondered the same thing. So the turbines are generating the power, it goes into the sub at 34.5kV, is converted UP to 345kV and out to the grid?
Since you started with the high voltage,I thought it was coming in, down-converted, and out for later conversion to utility power.
@@KutWrite These new turbines won't run without power from the grid. They need power to start producing power. A transformer transforms power both directions, it doesn't matter to it. So best way to say in this case is the voltage comes from the grid and is stepped down, once the turbines are running, its feeding amps to the grid.
@@spdfreakls1: Thanks.
Man is this is some interesting shit
Great video!
Good vid.
How is the phase of the wind turbines aligned with the grid phase?
Each turbine matches the grid phasing before they close in
For those tiny generators it's probably electronically regulated, but the big ones use a really neat trick: Generators and (3-phase) motors are the same thing, just optimized a little bit differently. So if you connect a generator to the grid but not to its energy source, it will rotate in sync with the grid's frequency. Or in other words, the grid will try to keep the rotor in the position that matches the positions of all the generators in the grid exactly. When you now put load onto that generator (so it can actually generate and isn't a motor anymore), this still applies. If the load wants to push it ahead of the grid, it pushes the grid along (adding energy) but only a tiny bit (it would have to speed up all other generators to shift the grid's phase). If it wants to slow it down, it has to work against the momentum of the whole grid (using energy).
Not sure if you needed that info, but there are a couple thousand more people watching this. Good chance most of them have no idea how that works.
PTs reminds me of Frankenstein’s monster
Thank for sharing.
If she wants Starbucks
Dont drive to Mickey D's
What's this have to do with wind turbines? I think you're busking.
so all the power coming into that sub is from that one turbine?? if so that is pretty cool!
One of then produces 2.3MW. There are 99 turbines total on this project.
Is this journeyman type training, or more/less advanced than that?
So feeding power for the turbines, huh?
Yes. If they are not producing power they use power for electronics and hydraulic systems. Each 35kv feeder will be using 20-40 amps depending in feeder length and auxiliary equipment.
I HAVE ONLY A COUPLE QUESTIONS? HOW DO YOU SYNC THE TURBINE POWER FROM EACH TO FEED THE ONE 3 PHASE OUT AND OBTAIN THE 60 HZ ?
Great question!! Each turbine has phase synchronization device that allows them to match frequency. They get super hot but allow the turbines to constantly change speeds and sync to the grid. I am not sure of the efficiency of the device.
Here is an article to check out! www.google.com/url?sa=t&source=web&rct=j&url=pdfs.semanticscholar.org/db6a/296589ae83fe49df77f897b5ab81589598dd.pdf&ved=2ahUKEwiC6IrIlfvqAhUPna0KHQPIDjIQFjAAegQIARAB&usg=AOvVaw0ihjLLilp8St73Ajo6EpGL
Thanks!
Is this legal to do shooting inside... here in India we usually see a “ no photography” signboards in front of power stations why is that so sir?
there is a sing No Photography, but the good thing is that this is a video
@@billram1604 Rofl...I know you have been told before, but you arent right...rofl. You hit the low hanging fruit out of the park, dont you!!!
@JadonGamer yah that what I was asking. just out of curiosity.
Cool video but you're basically explaining half of the story. You're not exclusively stepping 345kv down to 34.5kv. When generating and synced, the turbines are sending 34.5kv to the station and you're stepping it up to 345kv for grid transmission. But good video otherwise!
10:1 turn Ratio
Are u sure? i thin 1 Transformer can handle everything, i mean it is just 140 MVA
you can make 1 as large as you want but fault current goes up and adds tons of costs to downstream costs.
@@spdfreakls1 in my company everything is large enough to turn one transformer off and these 34kV kabels do not look that thick, that one transformer couldn't handle it. Also our switches between the secondary sites are bigger, so we don't have to turn off one first
I dont know the right words to explain it in english that well, also i would like more people to watch this to understand what we are doing and how special it is
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did not talk about arresters with the transformer High/low side.
ok
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