Медь в ВВ линиях под землей HV underground

[MetrakitProRaceII]

nice blonde

[shelteringshade]

жжжжжж

[3JIouSHOOTnik]

Магнитная составляющая не изучена? Какой бред!

[ATP2555ify]

scariest transmission tower i've ever seen

[mikeshepherd]

Why not send that stupid woman back to school. 400 years ago, she'd be whining about witchcraft. Today, she whines about magnetic fields. When she can at least calculate the strength of the field and how the field from one conductor is largely cancelled, in any case, by that from another, then she can maybe start making claims about the effect. Until then, she's just an idiot with a big mouth.

[komyachkotaras1]

Как они думают обслуживать эту линию? Это бред.

[trackudown1]

The blonde anchor lady is hot. :)

[chippers34]

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[skeezysquirrel]

2:25 She's hot....

[MattyHild]

Russians fucking shit up again..

[rofz]

Please accept my apologies for raising this subject, but WHAT THE F..K ARE THEY SAYING?

[PowerORK5000]

хм пропустил

[navalnuke19]

isnt it more practicle to just use AC and filter it to a near perfect DC? im sure the over all cost of using filters and rectifiers and all that jazz would be a little bit more expensive but you cant tell me all they use is DC

[ukthk555]

i prefer the look of these towers they look better than uk's they remind me of old style ships sail masts ;o)

[ukthk555]

i mean the towers at the start 55secs in

[misoislamic]

preckikov shikov!

[Til80]

Too hard and expensive to transform DC voltage to lower voltages due to no pulsating magnetic field

[tom40K]

Pulse Width Modulation. DC timed very fast at full voltage to make it smaller voltages, since it is on for small amounts of time. Not sure how feasible this would be for power transmission. Perhaps when they get silicon carbide semiconductors figured out.

[Zyozyoma]

Are they planning on using high voltage DC transmission? DC is a good way to cut down the amount of copper needed for transmission, since there's no skin effect and you only need two lines (negative and positive) instead of six.

[Mlk409]

Only 3 cables are necessary in a 3 phase system. If you can see 6 lines, that means, there is two paralel rail. And the load doesn't decrease, so you also need more paralel lines in DC, or a gigant cable. :-) And the skin effect is negligible on 50 Hz. :-)

[tom40K]

You can have 4 wires in a 3 phase system if it's wired in the "Wye" configuration. But I would imagine "Delta" is cheaper, since it uses 3 wires. Also, higher voltage means less current, which means smaller wires.

[bum291]

Actually, they have a hv DC line between finland and sweden, they have only one wire, the other is ground. They use rectifier/inverter systems, they can't transform it directly.

[SouthwesternEagle]

This sounds like sjkagvbaevbjlrkaghiowehsjkehfj­sgjkdhlruenhnhvtenlsnetiejrlks­jniljwamksgwkojakmhptnmakldfmv­ieromaklrjbethikjr to me.

[infocu]

Well, probably you need to upgrade something in your "software" :-)

[SouthwesternEagle]

LOL! Well, the Russian language is considered one of the most difficult languages for English speakers to learn.

[lgugue]

@SouthwesternEagle

XDDDD

[mikeshepherd]

@SouthwesternEagle

It's down to...how shall I put it...lack of education.

[SouthwesternEagle]

@mikeshepherd You are.......a little late to reply to this. I'd say nearly 3 years. =3

Judging by your very upbeat comments on your profile, and the one you just posted here, I'd say you are racist, and not worth my time. :)

[HedgehogTH]

Жесть, 5см медь!!! Сколько ж денег это стоило, ужас.

[infocu]

Сколько бы ни стоило, а, на самом деле, не так дорого, как может показаться, развитие высвободившейся территории приносит на порядок больше... . Собственно, воздушных ЛЭП нет ни в одном сколь-нибудь значительных городов развитых государств... .

[HedgehogTH]

Ну во тскажем, на воздушных ЛЭП юзают стальной кабель. А тут медь... Я думал экономить будут.

[infocu]

Высвобождаемые городские площади стоят многократно больше. Особенно теперь когда цена на медь вернулась к своим естественным значениям (т.е. совсем не дорого!).

[maxisvlad]

@HedgehogTH На ВЛ юзают провода АС - алюминий/сталь в основном, причем сечение алюминия в 6-8 раз больше чем стали.. Медь конечно дороже, но не думаю, что очень сильно.

[The38rusRJ]

@HedgehogTH Стальной кабель в воздушных линиях используют только для усиления его прочности. Чтобы увеличить длину пролетов, и чтобы провод не провисал под собственным весом. А основной проводник в ВЛ - алюминий. Середина стальная, а наружная оплетка - алюминиевая.

[WolfGuy100]

What they're talking about? I can't understand Russian language, can someone please translate it for me?

[Kamikadze2009]

Насчет того чтобы объединять несколько напряжений на одной опоре, это идея правельная, поля действительно компенсируют друг друга и электромагнитное излучение от одной лэп 500 гораздо больше. Единственное что , так это обслуживать эту линию самим же энергетикам будет труднее, поскольку для того чтобы обслужить например одну из нескольких цепей этой линии, придется отключать ее полностью и так же надежность данной линии снижается.