World's highest transmission towers, in Zhoushan, China will be put into service soon. Join us in this broadcast to find out how the gigantic towers are constructed.
IMHO; 500kV is not exceptional, but the 380m tower height is dictated by the width of the span they want to cross, the droop of the catenary and the strength of the power cables. Then, the wind forces on those cables mean the tower must be strong as well as high. Congratulations to the designers and builders of this truly astounding project.
What is the highest capacity transmission line in the world? Seems we need to build them across all continents to share renewably powered electricity back and forth for our citizens...enabling a systemic phase out of fossil fuels and their carbon emissions, air pollution and energy insecurity.
Chinese is a ‘tonal’ language: meaning is carried in the pitch of the phrases. Interesting that these women also speak English pretty well. Can’t say as much for the average American, myself included.
So Amazing ! China is helping themselves and the world by building things like this ! Amazing workers also ! Very courageous ! And you should feel proud ! I thank you on behalf of my nation of Canada :) Be safe and have fun !
That is going to carry a lot of power! So much "juice" over the wires! (Did he say 500 Kilowatts? That is not so much as it looks like it can carry much more!) Oh, I understand, it is tall to allow tall ships to travel beneath it!
You don't want to climb up the longest spiral staircase in the world just to START whatever you're going to do up there? It makes me feel funny just to LOOK at it! For engineers this tower might be a kind of tourist attraction in itself! I would like to visit it, never seen anything like it.
Mate!! He mentioned this Pylon weighs 7.000 tonnes. In New Zeland 80 tonnes is a huge Pylon. The need for this huge structure I see a couple or reasons. To continue to carry huge voltage (500, 000) across a massively big span you need height and size.
at this point there is likely no added tension because the heat cycling of the cables would cause premature failure from metal fatigue. just like a suspension bridge, they are just supporting the weight. high transmission loads through the cables likely causes them to droop by an extra 50+ meters so this stretching back and fowarth would not be good to add more forces like tension
As an american tradesman, I find these transmission towers to be modern marvels. The construction workers, architects, and engineers should be proud of themselves. That tower is a work of art. I even consider it to be a mega structure. 🔧 🏗️
It's a very impressive structure but I guess these towers will need a lot of maintenance over their life time. I wonder how it worked out cheaper to built these two towers that weigh over 7000 tonnes each than to lay undersea cable between he two islands?
High voltage line in transmission towers is the cheapest because the conductors are naked and unprotected. They are isolated by air and the heat is easily dissipate. At high voltage electrical cables can't be made large enough with wide enough separation because the cable needs protection and armour.
ya they can do underground cables but those are impossible to inspect and at these high voltages you need to pump in a bunch of oil insulator and so that can cause early failure if there is a leak in this fluid with any corrosion or crack. in california some of the underground high voltage dc lines have failed after their frequent earthquakes because they develop a crack and leak their oil out over time. it is then extremely difficult to fix this crack underground and takes a long time to basically place an entirely new underground transmission line. ur question is a good one though. one problem is the heat from high transmission can cause the lines to droop more than what you expect and the steel masts of ships plus salty sea water in the air makes for a perfect point of arcing to the ground/boats underneath.
If China need something they build it, no obstacle gets in their way, From bridges to railroad to buildings, hard work and dedication, and in Record times 👍👍 to China.
Forget the Eiffel Tower, these things are as tall as the Empire State Building (minus the TV antenna). They are not the tallest any more however, another pair of recently completed towers crossing the Yangtze have beaten them by 5m!
