Free Republic
Browse · Search
News/Activism
Topics · Post Article

Skip to comments.

Bush to speak tonight to America from San Diego at 8:30 EST
MSNBC ^ | 8-14-03 | Me

Posted on 08/14/2003 5:07:29 PM PDT by GraniteStateConservative

click here to read article


Navigation: use the links below to view more comments.
first previous 1-2021-4041-57 last
To: GraniteStateConservative
I finally remembered the reason for the speech being made national was the capture of the Indonesian bomber, member of Al Qaeda. Sorry, but the power outage drove it out of my mind as well as the media's.
41 posted on 08/14/2003 8:29:28 PM PDT by Eva
[ Post Reply | Private Reply | To 19 | View Replies]

To: Physicist
It would just as meaningless to order that E = MC3. The only way to make the Grid more reliable is Distributed Generation. Think one generator/fuel cell/etc. per household or business.
42 posted on 08/15/2003 3:43:51 AM PDT by FreeLibertarian (You live and learn. Or you don't live long.)
[ Post Reply | Private Reply | To 3 | View Replies]

To: Eva
He didn't even mention it.
43 posted on 08/15/2003 4:59:50 AM PDT by GraniteStateConservative (Willie Green for President...)
[ Post Reply | Private Reply | To 41 | View Replies]

To: Cheesel
According to the Constituion, I believe he federal gov't's job is to print money, develop relationships with other countries, secure the borders and raise an army and not much else.

The Constitution also mentions the promotion of interstate commerce. Do you see much commerce going on right now?

I am more libertarian than all but a tiny handful of posters on this site, but if there's really no better answer to the fragility of our power grid than, "well, they're private companies; it's between them and their customers", then Bush would do well to nationalize the entire system today. (That's a "modest proposal", for those of you following along at home; of course there's a better answer.)

Market forces are preferrable to command economics, but in our economy the power grid underlies the market. Short circuit the power grid and you disconnect many of the forces you were counting on. Of course the government has a responsibility to get the power back on ASAP, if for no other reason than that the government can't fulfull its other responsibilities without it. If intervention can help facilitate that, then that's what should happen.

44 posted on 08/15/2003 5:30:54 AM PDT by Physicist
[ Post Reply | Private Reply | To 40 | View Replies]

To: FreeLibertarian
It would just as meaningless to order that E = MC3.

Well, no, because humans didn't design the laws of physics, but we did design the power grid. There is nothing inherent about power grids that means they have to be arranged like rows of dominoes.

The only way to make the Grid more reliable is Distributed Generation. Think one generator/fuel cell/etc. per household or business.

We already have distributed generation, as compared to the affected area, but that didn't help. And breaking up the system into finer divisions isn't the only way to do it.

45 posted on 08/15/2003 6:16:35 AM PDT by Physicist
[ Post Reply | Private Reply | To 42 | View Replies]

To: GraniteStateConservative
He didn't even mention it.

He announced the Al Qaeda news himself earlier in the day. That was not why his remarks were scheduled last night. He was attending the fundraiser and they arranged to have him make his comments about the blackout before he attended that. It was not to address what he'd already talked about earlier.

46 posted on 08/15/2003 6:22:13 AM PDT by cyncooper
[ Post Reply | Private Reply | To 43 | View Replies]

To: cyncooper
So you're saying that he only asked for air time once he decided to speak on the black outs? I thought you suggested differently.
47 posted on 08/15/2003 6:45:59 AM PDT by GraniteStateConservative (Willie Green for President...)
[ Post Reply | Private Reply | To 46 | View Replies]

To: GraniteStateConservative
I thought you suggested differently

Not I. You must be thinking of someone else.

48 posted on 08/15/2003 7:01:16 AM PDT by cyncooper
[ Post Reply | Private Reply | To 47 | View Replies]

To: Physicist
Well, no, because humans didn't design the laws of physics, but we did design the power grid. There is nothing inherent about power grids that means they have to be arranged like rows of dominoes.

I was using an analogy that would be familar to your field of reference.

The power grid relys on a Protective Relaying system to prevent the dominoe effect that you described. The system monitors potential failure points for multiple variables that can effect the operation of the grid. If a failure event is detected by a Protective Relay then the "dominoe" that is exhibiting the failure systems is supposed to be isolated from the rest of the "dominoes" thus isolating the failure to as small an area as possible. In the current grid system the "dominoes" are too large to allow a failure to be absorbed into the overall grid wihout making the whole system unstable. If a dominoe isn't isolated within 100 mSec from the start of the event then the whole grid begins to destabilize. That is what happened yesterday.

One problem in this scenario is that the Protective Relay has itself become a failure point that can effect multiple dominoes. Building redundancy into the Protective Relay system is a partial solution but it has its own problems. A dual redundant system only doubles the number of failure points. A triple redundant system is better but you still have to have a final point of intelligence to vote on which 2 out of 3 sensors to trust. That point of intelligence is a potential single point of failure that can effect the whole row of dominoes. Obviously taking redundancy to the next level where the transmisson lines themselves are redundant has the same eventual fallbacks.

The power grid has become so complex with millions of protective relays that modeling it completely has become impossible.

The cause of the blackout that effected the N.E. back in the 1970's was eventually traced back to the failure of a single protective relay on a transmission line. A similar cause will eventually be found for yesterdays event. A fire or overheated transformer or lightning strike may have been the root cause but a protective relay had to fail to allow the event to spread beyond the local dominoe.

The only real solution is to break the system up into smaller dominoes where each dominoe can provide enough power to provide for its own area with enough reserve to help assist its neighbor dominoes when necessary.

Think of a pentagon cell design where each cell can only effect the cells to which it is directly connected. That can best be accomplished by the house by house, building by building generation capability that I originally described. With widely distributed generation the failure of single point can easily be absorbed into the overall grid even if its own protective relaying were to fail. In that scenario cells 2 to 3 steps removed from a point of failure would have completely absorbed the fluctuations caused by the original failure. In other words the event would never spread beyond a city block from the original event.

Obviously this is going to require a major modification of our infrastructure but the good news is that it has already begun. Microgenerators are already on the market. They will be combined with solar, wind, fuel cell, etc. sources over the next twenty years.

49 posted on 08/15/2003 9:36:08 AM PDT by FreeLibertarian (You live and learn. Or you don't live long.)
[ Post Reply | Private Reply | To 45 | View Replies]

To: Physicist
Here is an article that further illustrates my point.

http://customwire.ap.org/dynamic/stories/B/BLACKOUT_THE_INVESTIGATORS?SITE=CALON&SECTION=HOME&TEMPLATE=DEFAULT

Particularly this paragraph.

"Not even the best computer can see the whole system and see all the weak points," said Phillip Schewe, a physicist preparing a book on the 1965 blackout. "Complicated, massively connected systems like this are always moving toward a critical state."


I design Emergency Load Shed systems for large idustrial users. My systems provide the same function as the systems that failed to prevent the Blackout on a somewhat smaller scale, 13.8 kV vs. 230 kV.

The investigation is now focusing on a massive electrical grid that encircles Lake Erie, moving power from New York to the Detroit area, into Canada and back to New York state. There had been problems with the transmission loop in the past, officials said.

Week after next I am scheduled to perform the start-up of a Load Shed System at a plant that is installing a power distribution system that uses a "loop" or ring configuration for its 13.8 kV distribution system. My associates and I have some concerns that a "loop" configuration may induce eddy currents in the "loop" under certain upset situations. Some of our concerns include worrying about the eddy currents inducing an oscillation of current within the system that would eventually overload the circuit. Based on the reports that we have seen so far that would be a good description of what happened.

Currently no existing system models that we are aware of reflect that scenario. If you find any articles that have data on the cause of the Blackout or have any useful ideas please let me know.
50 posted on 08/16/2003 7:47:19 PM PDT by FreeLibertarian (You live and learn. Or you don't live long.)
[ Post Reply | Private Reply | To 45 | View Replies]

To: Physicist
>>The Constitution also mentions the promotion of interstate commerce. Do you see much commerce going on right now?<<

Yep, I see it all the time. If you are going to tell me how awful the economy is, DON'T. Anyone who can't remember the Depression doesn't know what a bad economy is. No, I can't remember it because I wasn't around then. Yes, I am unemployed and have not had steady work since Jan. 2002.

If you really are Liberatarian, you should rail against the nationalization of any industry. Look at the disasterous results nationalization of industry has had.

The best way to deal with this is not to nationalize (did you know that 'nazi' was a slang term for 'nationalize'? Yep, 'cause it was something they loved to do). The most effective way in MHO is to have industry do it. I have seen this at work in my own field.
51 posted on 09/10/2003 9:33:33 PM PDT by Cheesel ("To be conservative at 20 is heartless and to be a liberal at 60 is plain idiocy." Winston Churchill)
[ Post Reply | Private Reply | To 44 | View Replies]

To: Cheesel
Yep, I see it all the time. If you are going to tell me how awful the economy is, DON'T.

Give me a break. I was referring the the blackout. Look at the date of my post.

If you really are Liberatarian,

I am not. I am a libertarian.

you should rail against the nationalization of any industry.

Where did I say that any industry should be nationalized?

did you know that 'nazi' was a slang term for 'nationalize'?

I've seen people run afoul of Godwin's Law before, but I've never seen anyone stretch so far to do it.

52 posted on 09/11/2003 4:24:16 AM PDT by Physicist
[ Post Reply | Private Reply | To 51 | View Replies]

To: FreeLibertarian
"Not even the best computer can see the whole system and see all the weak points," said Phillip Schewe, a physicist preparing a book on the 1965 blackout. "Complicated, massively connected systems like this are always moving toward a critical state."

That redounds to my point. The grid is so complex NOT because there are many producers and consumers of power--computer systems and phone networks involve many more nodes--but because the system grew by accretion, with the most important structural decisions being made on an individual basis, without regard to how they affected the whole. If minimal standards had been developed and followed in the first place, most of this complexity could have been avoided.

53 posted on 09/11/2003 4:33:23 AM PDT by Physicist
[ Post Reply | Private Reply | To 50 | View Replies]

To: Physicist; Willie Green
"If minimal standards had been developed and followed in the first place, most of this complexity could have been avoided."

Sounds like what is happening now with our transportation systems.

54 posted on 09/11/2003 8:25:52 AM PDT by AGreatPer
[ Post Reply | Private Reply | To 53 | View Replies]

To: Cheesel
Rereading my post of 8/15, it occurs to me that you may not have caught my reference to "a modest proposal". It refers to a 1729 essay by Jonathan Swift about curing both hunger and overpopulation in Ireland. His proposal was that the Irish eat their children. It was not meant to be taken seriously as a solution, but rather was intended to make the reader think more critically about the problem and its causes.
55 posted on 09/11/2003 9:01:55 AM PDT by Physicist
[ Post Reply | Private Reply | To 51 | View Replies]

To: AGreatPer; Physicist
If minimal standards had been developed and followed in the first place, most of this complexity could have been avoided.

I suppose it depends on what you mean by the term "minimal".
A good arguement can be made that "minimal" standards WERE developed. Afterall, we use electricity generated at 60 Hz while much of the rest of the world operates at 50 Hz. And as far as transportation: we drive on the right side of the road (most of us, anyway) while many other nations drive on the left. It's a virtually impossible task to establish visionary standards for technology that's not fully developed. Incremental improvements occur haphazardly over time, and even major "breakthroughs" are often subject to compatibility constraints with what already exists.

56 posted on 09/11/2003 9:22:45 AM PDT by Willie Green (Bwahahahaha!!!)
[ Post Reply | Private Reply | To 54 | View Replies]

To: Willie Green
"I suppose it depends on what you mean by the term "minimal"."

By golly, you got me good on that one. Not only that, I agree with your post.

My wife and I were discussing our trip to Africa and we recorded 13 different means of transportation for the to/from trip.

I will admit, it is tough to compare transportation to electricity. Uncle.

57 posted on 09/11/2003 9:51:27 AM PDT by AGreatPer
[ Post Reply | Private Reply | To 56 | View Replies]


Navigation: use the links below to view more comments.
first previous 1-2021-4041-57 last

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
News/Activism
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson