Attack-Proof Power Line to be Installed Under NY
Podcaster writes "American Superconductor Corporation and Con Edison have announced a joint effort to develop and deploy a new system that utilizes high temperature superconductor power cable technology in Con Edison's grid in New York City. The project, called Project Hydra, will aim to establish 'Secure Super Grids' that can withstand extreme weather and terrorist attacks."
Don't want to RTFA? That's fine, this is /. after all. Here's a summary of the main points to get you started:
-P
Be my friend.
The project, called Project Hydra, will aim to establish 'Secure Super Grids' that can withstand extreme weather and terrorist attacks.
But will it survive human error and project mismanagement? I think not.
The theory of relativity doesn't work right in Arkansas.
That sounds like a challenge. Hope nobody in NY agrees with me...
(IANAL)
IIRC, superconductors tend to loss their superconducting properties when strong magnetic fields are applied.
Look out for terrorists buying large amounts of copper wire and batteries...
Wasn't Hydra was the mythical monster that managed to think of multiple ways to get government money in the name of fighting terrorism each time one was cut off?
ccalam - acoustic versions of new songs.
"Cool bit" is something of an understatement, don't you think? 43 Kelvin is well past "cool" and into "cold," possibly even "frigid" territory.
Reality has a conservative bias: it conserves mass, energy, momentum...
screw terrorism, screw weather, is it BACKHOE proof?
every day http://en.wikipedia.org/wiki/Special:Random
So we are going to spend how much more to protect one city out of hundreds in our country. And we're going to do it in a manner that makes no sense to me. Let's bury all the cables, because terrorists have demonstrated that they want to blow up electric towers. Now they will just aim for the generation facilities.
In the meantime, Seattle, LA, Chicago, Detroit, Boston, Miami, Houston, Washington DC, etc all will have 'vulnerable' powerlines. So in reality, we are just throwing another giant chunk of money in the Anti-Terrorism wastebasket. If it was that big of a threat, wouldn't we be spending billions doing it everywhere?
And what about bridges? Right after 9/11 there were numerous threats against large bridges and major roadways... yet what have we done about those? Oh, that's right....nothing.
We bought the bait hook, line, and sinker. We have given up freedoms to be safe. We spend lots of money in the hope that it buys safety, when in reality all it buys is a bigger house for our politicos and their corporate cronies, and no actual safety for the populace.
I, for one, am ashamed of our Big Brother Overlords. The USA is done. Stick a fork in it.
Uh.. according to TFA this system must be cooled to -382 degrees farenheit to work properly. Of course they use liquid nitrogen to do the cooling.
So now, instead of having a system that can be patched relatively quickly with stock parts by people wearing goggles and cover-alls you will have a system that depends on a teams able to deal with radical temperatures within the system, cordoning off segments from the liquid cooling system, performing maintenance, and reintroducing additional coolant before the patch can be brought back online.
While they may find a way to make this new power system harder to take down completely, the process of getting it back up after a destructive event would seem to be exponentially more difficult.
If anything, this technology could inspire terrorist types to try hitting the power grid... something they have not done in America yet.
Let's hope not.
Regards.
Nekkid Kate Winslet? I'd go down on that ship.
- None can love freedom heartily, but good men; the rest love not freedom, but license. -- John Milton
I know they were thinking of the mythical monster when the name Hydra was decided upon. But don't any of the geek on the staff read comics? Don't they know that HYDRA is the code name for a global terrorist organization? I mean c'mon! Why don't they just call it Spectre?
I judt got a nre Kinesis keybiartf so please excusr ant egregiou typos.
DHS always tries to justify public expenditure by playing the terror card, but in reality, the blackout of 2003 (or whatever year it was) has far more to do with Hydra than any terror threat.
That said, in today's environment, doesn't it seem a bit moronic to name your project after a mythical monster slain by a mythical hero from the Middle East? Isn't that just asking for people to see the US as the bad guys?
And, of interest possibly only to me:-Topsell
I never knew Ralph Wiggum masqueraded as a 17th century English naturalist.
"Trolls they were, but filled with the evil will of their master: a fell race..." -- J.R.R. Tolkien on Olog-hai
You're probably right with the misprint.
Articles like this are just fodder for the less technically educated masses, and typically written by somebody with a less technical background (afterall, it _is_ coming from Reuters). When they get posted here, the real fun is watching the interpretation, extrapolation and speculation begin on what is really being done from a technical standpoint.
Somebody's never been to Winnipeg in February.
43 Kelvin is spring.
The truth about Led Zep should never be told on
Because nothing says "fault tolerance" better than a requirement to keep 40 miles of wire at -400F.
So a check-list:
Name? -> Fine,
Protection from environmental issues? - nil,
Protection against terrorism? - May stop Greek Historian Fundamentalists.
Self Regulating? -> Fine
Protection from environmental issues? - moderate, will route around local issues.
Protection against terrorism? -> See above
Large number of interconnects -> Fine
Protection from environmental issues? - moderate, its redundant (see Self Regulating).
Protection against terrorism? -> See above
Superconductor requires extreme cooling -> Hmm
Protection from environmental issues? - Nil, (may help fight global warming?)
Protection against terrorism? -> Hope they don't damage the cooling infrastructure, or the
containment, or the management systems. I guess that would
break it
Cost @ $40 million -> Good
Protection from environmental issues? -> Nil
Protection against terrorism? -> Nil
(Doesn't seem to high for something unique, just think of the tourists (not terrorists,
*tourists*))
Funded in part by the US DHS -> Hmm
Protection from environmental issues? -> Nil
Protection against terrorism? -> Nil, but propaganda coup for DHS!!
Its amazing how many things appear to have a secondary benefit in preventing terrorist attacks. I would hate to see what kind of projects we'd get if there were a spate of shark attacks... (A new inland housing development, it provides cheap, affordable housing... and protection from sharks..)
Now I can not only steal the electricity to run my computer, I can also let the city do the cooling of my PC.
Don't fight for your country, if your country does not fight for you.
As a HAM, you should know the answer. Broadband over Powerlines only causes interference due to the frequencies in the power lines being the same as you might try to transmit at. In these, the frequency is going to be 60hz, the frequency of your electrical outlet. I highly doubt you are ever going to be transmiting at 60hz on purpose.
Fly me to the moon Let me sing among those stars Let me see what spring is like On jupiter and mars
Economy of New York
If it were a country, its GDP would be the 17th largest in the world. It makes a prime target for economic reasons, and major terrorist action in New York would have a significant impact on the rest of the nation.
This does sound like a grab for homeland security money, certainly; but it's not unreasonable, on the whole, to keep a special eye on New York when it comes to preventing terrorism.
can withstand extreme weather and terrorist attacks
What's the price of the label "Terrorist attack safe"?
Special discount at WalMart: Terrorist attack safe coke! Buy 2 get 1 free!
Grundgesetz * 23. Mai 1949 - 30. November 2007 - http://www.vorratsdatenspeicherung.de/
"Surely it is conceivable to cool liquid nitrogen down a little below it's boiling point."
Well, yes, in theory you can do that. I haven't read up on my cryogenics, but the trick is to exchange heat efficiently in order to lower the temperature of the liquid nitrogen. One way to do that is to use an even colder medium and a heat exchanger, which is kind of futile, since the colder medium can be used directly. The other method is to use compressible phase-changing gases, such as found in refrigirators. At this moment I cannot think of a reason why that is impractical. Perhaps there is a lack of suitable elements/gases..
This website http://www.uigi.com/nitrogen.html, however, gives a very good reason:
"When liquid nitrogen is vaporized and warmed to ambient temperature, it absorbs a large quantity of heat. The combination of inertness and its intensely cold initial state makes liquid nitrogen an ideal coolant for certain applications such as food freezing."
So the energy/heat required for the phase change of nitrogen from liquid to gas is quite a respectable one, making operating with liquid nitrogen at that temperature (i.e. the b.p.) a preferable one.
I do know, however, that with special techniques, it is possible to cool liquid helium a little further towards the zero Kelvin point. This is used, for example, in MRI scanners to minimize the boiloff of helium. I believe they have now acheived zero (!) boiloff.
B.
Every experiment which ends in a big bang is a good experiment.
It's fairly easy to replace downed or damaged transmission lines. The real vulnerability in a power distribution system are the transformers, all of which are easily destroyed and extremely difficult to replace. So attack proof powerlines are nice, but really doesn't solve the problem in the bigger picture.
Magnetic levitation in superconductors occurs due to the Meissner-Ochsenfeld effect, which is slightly different than what the parent describes. The parent's memory may well not be faulty, however, as the Meissner effect is often erroneously explained in terms of perfect diamagnetism and Faraday's Law of Induction. While it is true that as a perfect conductor, a superconductor is also a perfect diamagnet, and can be expected to generate an opposing electromagnetic field in response to a changing magnetic flux through it, a superconductor also opposes a constant field.
This can be demonstrated by placing a magnet on top of a superconductor above its critical remperature, then cooling the superconductor below the critical temperature. When the superconductor hits the critical temperature, the applied field from the magnet will be expelled out to the London depth (about 50 nanometers in most superconductors), and the magnet will levitate. It's a subtle difference from the perfect diamagnetism explanation, but it was one of the key clues that led to the explanation of superconductivity as a phase transition and as a nonclassical process.
"FDA staff reviewers expressed concern about the number of patients who were left out of the study because they died."
None of those things can hold a candle to the biggest threat to underground cables - The Backhoe.
Granted, as deep as this cable will be buried, you'll need a larger backhoe.