Extensive refurbishments of the DkIT wind turbine have taken place and included the replacement of the turbine's gearbox. The recent upgrade is expected to secure an additional 10 years of operation for the turbine. The 859 kW turbine has been in operation since October 2005 and powers approximately one third of the campus' total electricity consumption.
and how much did that cost and will the wind turbine ever return the cost in electricity? not even a quarter of it, wind power is just stupid. climate change is bullshit.
A lot has changed since me working on the 250 KW models in the early 90's. Very happy to see, the Midas display and keypad has remained the same. Thanks for showing us around. Thank you.
@stromsky58 Do you really think that nuclear or gas plants never received public money??? And for nuclear plants, our grand grand grand children will still pay for keeping them secure after they stopped producing.
@@michelbaguette3106, wind turbines cannot be considered as a substitute for nuclear power unless cold thermonuclear synthesis comes true. So there is no point to compare them at all as wind power is not capable to continuously produce enough electricity to maintain steady economical growth of a modern country. There is no replacement for nuclear power available so far. All these talks against nuclear power heard here and there are just dirty games of any kind of left-ish political crooks who manipulate the ignorant minds of their electorate . The fact is that the contemporary nuclear power technology is the most cleanest yet natural environment friendly in comparison with the others. The cause of Chernobyl disaster was just a result of isolated anti-human Soviet regime where people's lives were valued about zero.
@@MSM5500 I don't know any country that still uses graphite moderated reactors. Current 3rd gen and beyond tend to be much safer. I wish 4th gen would come online in the USA sooner rather than later.
@@williamgoodwin3325 14 out of the 15 reactors in operation here in the UK are AGR which are graphite-moderated Russia is still using about 10 RBMK-1000 reactors, the same type to Chernobyl. They were modified after the accident.
I live in northern Oklahoma, USA, and these things are everywhere. Some are very close to the highways and the size can be appreciated, and encountering a blade being transported really brings it home. Thanks for the tour.
Loved the dry run of the process of connecting to the safety line, climbing the ladder, and then disconnecting from the safety line. Better to get people familiar with the process while on the ground where you can show them in a safe place! 👍🏼
What a glider! How over engineered can you make it? Was it a "euro design?" I had several grabs for wire and regular rope, one for a single tower! My fav was one that you cocked it horizontal, then placed on cable, then twisted 90 degrees, then clipped a carabineer through the hole! Slick and fast and was used often in dark towers by feel alone.
I would have guessed that the gear box and generator of all things would be among the LONGEST lasting components. Those are both VERY mature technologies!
Vestas world # 1 wind turbine, i proud that i am also working on Vestas V90 at zorlu pakistan, our great achievement is we repair the pitch cylinder at height in hub change orings
Well, I had absolutely NO idea that what appears to the untrained as simply a wind turbine would be so mechanically complex with that many different systems! Thanks for sharing.
But still futile overall, and very damaging to landscapes in great numbers. This video just shows one isolated machine of several hundred thousand on the planet already. Wind turbines are a fail because so many are required vs. much denser power sources.
@@falseprogress Do you not understand the point of clean energy? No shit there is going to be more required. It is a electricity producing machine vs a giant coal burning plant etc. They may disrupt the natural look of a landscape but they preserve the health of the landscape by not using natural resources for fuel. It's amazing how uneducated people are about simple things like how our grid gets its energy.
@@falseprogress Please dont be stupid, its so simple not to be. every mechanical system of producing electrical energy uses the same principles. Ie Turbine-Gearbox-Generator. nuclear, same coal, same Gas, same Solar heated water, same Waste furnace, same
I'd expect nothing less. they know those machines because that's there life if they aren't cautious consistently. I'm going into the program soon and I can't wait
Thanks so much for sharing this. I really love to see what makes things like this work. As a diesel / gas generator service engineer I understand how this machine works but seeing how it's built is really cool! Thanks again!
I always wanted to see the inside of one of these wind turbines from the bottom base to the top generator so I can better understand how it works. Thank you for the video upload.
Great insight into the build just subscribed and it’s a nice compact turbine I also have built a homemade 650 watts wind turbine, a treadmill motor turbine and a little but powerful ametek 30v turbine and built 2 diy solar panels, be careful in high winds one of my first turbines blew up 😕and now have only 2 wonderful turbines working daily 😊it’s very satisfying watching those things working, keep up the good work buddy 👍
I am from Brazil and I was very happy for the beautiful work of Vestas. I am very cofiante of one day if God allows to come to work in this company that marks life. But, it is a pity that there is no targeted training in Brazil. I am a person who loves wind turbines and I am working hard to study in this area. It's been a while since I've been following Vestas's work and I know it's a great technology company and I also know that one day I will have the great opportunity to be part of a brilliant team. I apologize for some mistake in writing, therefore, I do not speak or write well in English ... I am using the translator ... kkkk ... but soon I will learn. A big hug!
I'm surprised the transmission can't use some kind of simple convection cooling, lord knows there is plenty of wind just outside that tower for cooling. Very surprised to hear about the cables that simply twist up to 3x, but it makes sense, must be cheaper than some huge slip ring and the maintenance for that. What an awesome video!
I'd like to know more about the power electronics. I'm guessing Active front end rectifier to DC bus. Then an inverter on the output that matches the frequency of the grid. I'd like to know how that matching is done.
i was doing chain and rigging certifications for 9 1/2 years and got to go up the Vestas 1.5MW and the V90 3MW turbines in Manuatu, New Zealand. got a good pic of me sitting on the roof of the V90 nacelle with the head of the crane they put the blades on with behind me then the crane beside the turbine as well. we had to certify the electric chain hoist up them. amazing view on a good day from the top of them 85 odd meters up. wasn't until after i had been up them i noticed the ladders on those are not bolted to the wall but stuck on with magnets that allow the ladder to move on the wall slightly to stop compression and expansion of the ladder with the movement of the tower
@@MIGASHOORAY when you open the hatch in the floor of the nacelle you have to double lanyard in and open it while standing over the hole looking down about 80 meters. the guy that took my pic on the roof wasn't even wearing a harness
I question the 3 metres per second (10.8 Kilometres per hour) low operation wind speed?All wind turbines have a "stall" speed and a graph to determine minimum outputs, variations in wind speed and drop offs drastically reduce their output performance, and what about low speed cogging or magnetic lock via the 3 phase axial flux alternator? There are serious issues regarding the impact on the environment regarding suitable wind turbine location. Not so renewable?
Is the rotor of the generator just permanent magnets made of rare earths? If it were made with windings and an exciter, how much less efficient would the conversion be? How is the yawing mechanism locked out when people are in the nacelle?
@@tripplefives1402 It was always my understanding that wind turbines are all asynchronous, generating DC power and using a synchronous inverter to tie to the grid.
@@tripplefives1402 There is no such thing as too much power for solid state electronics. Here in the USA we have numerous HVDC transmission lines which are fed at both ends by power converter stations using solid state electronics to convert AC to DC or DC to AC at a typical 500kV. I have always assumed that all wind turbines operate in asynchronous mode, that is, the generator is not synchronized with the AC power grid, but rather uses a synchronous inverter which allows the turbine to generate power at a greater range of wind speeds, an important feature for a generator with an uncontrollable, unreliable power source. If a wind turbine used a synchronous generator connected directly to the AC power grid, at low wind speeds the turbine would become a fan and would use power to create wind. To prevent that the turbine would have to shut down in lower wind speed conditions, and would take some time to get up to speed and synchronized with the grid before it could begin generating again, so its output would be greatly limited compared with an asynchronous generator. Another thing, you say that asynchronous motors (I assume you mean generators) are connected directly to the grid and then operated at just above synchronous speed, but this is not possible. All generators which are directly connected must operate at line frequency with a very nearly perfect phase relationship to the grid. Consider the fact that a generator which connected to the grid while 180° out of phase would present a direct short circuit to the grid. So you can see that any speed variation whatsoever will result in an out of phase condition, which will increase current flow up to the point where circuit protection devices will be activated. This is why grid tied generators are always of the synchronous type. Finally, you speak of generators requiring power to excite the “squirrel cage” but this is also incorrect. A typical alternator uses a stator winding, usually 3-phase, to generate the power and a field winding on the rotor to generate the magnetic field to excite the stator winding. The alternator output is regulated by varying the power to the field winding. Synchronous generators are similar in design, with a field winding on the rotor. An alternator with a permanent magnet rotor cannot be regulated, and thus has a fixed output. Squirrel cages are found in AC motors.
@@tripplefives1402 It makes sense that you could reverse the process and make an induction motor generate power, but I have never encountered such a thing in my experience or study. That is why I have no knowledge of it. I will have to check it out. As for the terms synchronous and asynchronous generator, I am using them as I’ve heard them used regarding grid connected generators in general. Synchronous generators have swing momentum which stores a certain amount of energy which can be drawn upon to support the grid in the event of a sudden disturbance. Asynchronous generators have no momentum and merely track the frequency of the power grid, so they cannot help stabilize the grid. A wind turbine might use any kind of generator, but if its output is not mechanically locked to the grid frequency the way most traditional generators are, such that its physical momentum contributes to grid frequency maintenance, then it is an asynchronous generator. Having too large a percentage of asynchronous generators tends to destabilize a grid. I once had a very interesting conversation with an engineer in a hydroelectric power station, where he explained what happens when the section of the grid his station was connected to got isolated from the rest of the regional grid. There are two hydroelectric power stations on that grid, but only one of them has enough momentum to maintain grid frequency, and that is the smaller of the two. Yet it uses a few large generators which act as flywheels, while the larger station uses many small generators which can be more easily slowed. The result is that the bigger station needs the smaller station in order to operate the local grid if it gets isolated, a situation that has happened far too often due to inadequate transmission facilities.
@@tripplefives1402 That sounds very inefficient. Cheap to build, but wasteful of resources. With these wind turbines costing upwards of a million US dollars to build, I would expect to see something better than that. Using a 3-phase alternator that can generate useful power at almost any speed, then rectifying it and powering a grid tie inverter would be the best way, I would think.
In 5-6 years the turbine has paid for itself. Yes but then the gearbox breaks and how much does that cost? And then the genny blows. How much is that? Plus the 2 services in the year and a major one every 5. Do these things ever actually pay for themselves and save the college money or cost them with all the breakdowns and servicing costs?
@@DoubleM55 I wanted to see if they would admit they convert to fossil fuels when there was a shortage of wind. There has yet to be a method invented to store the energy generated by either wind or solar other than a sort of strange hydro system that pumps water up a hill which is slowly released to power generators.
@@davebeckley2584 It was explained in the video. The switching equipment in the college can feed some the generator output to the grid when there is more power generated than the college requires. When not enough is being generated then power is drawn from the grid to maintain the college power requrement.
@@johnr6168 What I was trying to point out was the fact that until Elon develops a battery with the capacity to store enough energy to power a city of any size we will remain dependent on fossil fuels to one degree or another. An administration that implements a future plan devoid of fossil fuels before the technology has developed makes this country dependent on other nations that could cut imports on a whim.
Why do they don’t mount the gearbox and generator on the base of the tower instead of on the nacelle on the top ? Just use and angular gear on the top to transmit the power to the base. Installation and maintenance cost would be half..or less
excuse me How much does it cost to build a Wind Turbine Tour? How much electricity can a Wind Turbine Tour produce per day? Are there any conditions when we want to create it somewhere? Thank you
Very good video. What is the coupling type between turbine rotor and gear box (low speed) and coupling type between gear box (high speed) and generator? Thanks.
Great video, loved it. I have always admired huge wind turbines and I wanted to be inside of it and experience the machinery inside. This video gave good insights. Thank you
I can see 28 turbines from my new house so I'm interested to understand whats going on inside. This video makes it all make sense. The big ones near Crick (J18 M1) seem to rotate at one rev' per six seconds. They are huge so make plenty of torque.
I was thinking that the fall arrestor wouldn't be much use if it falls quicker than you do but I suppose it catches on those steel braces holding the cable. Very interesting. I get some strong westerlies at my place so would be handy. Very gusty though which I'm not sure would be good for it. :/
They glide mostly! Often they hang up for ANY reason! Pain in ass on some cables, especially when working a field with old turbines and frayed, yes frayed ropes!
Gliders could work on fixed climbing routes, like mountain climbing but glider's are industrial safety items so few people know they exist. Very easy to lock up!
Sorry if I missed it but, no fire suppression of any kind inside? I see videos of these things in flames all the time. It's actually what brought me to this video.
They usually start to burn, if the pitch can't be controlled. They have a mechanical brake, but if they can't control the pitch the brake can overheat in stormy conditions and set the whole thing on fire(like if you drive with your car with the hand brake half activated). Typically it's a disc brake, similar to disc brakes in vehicles, only much bigger.
@@aland4440 I don't know if it's existing, and he haven't mentioned it, or not. But this turbine is now 15 years old, maybe it don't have a fire suppression. But water alone wouldn't be good, short circuits in the electric system because of the water maybe also cause a fire. A CO2 suppression system would be better.
Excellent! Very interesting. I wonder what causes the gearbox, and the generator to be the most problematic parts of the system? For example: vibration, metal fatigue, overheating?
Gearbox converts all that power and a small percentage of that power is friction. That small percentage is still a lot of energy. The wear on bearings is much lower. The generator itself has virtually no wear, assuming it is a brushless type, and assuming temperature does not exceed design of insulation.
Where do the auxiliary supplies come from? That is, is the generator self sufficient when running or does it need an off grid supply to keep it functioning?
One basic point for safety - this helmets are not fitted to work at height - no chin strap! Normally that kind of helmet can fall down from head and will not protect you or can hurt someone - egz. 04:40.
Just had a field trip at a test bench and I gotta say, these things are absolutely massive. The 15mw was in the process if being taken apart and apparently they had to weld the planetary gearbox down during shipping because if they didn’t it woulda sunk the ship, the gearbox weighs 325 tons. And you could stack three of my corolla just in the shaft adapter alone.
