Article on U.S. power grid stability.
Article on U.S. power grid stability.
(OP)
I found this article quite interesting. I hope this link works for everyone.
http://scitation.aip.org/content/aip/magazine/phys...
The article states that as transmission lines get longer the capacity goes down. Is this due just to resistance losses, just as for extension cords?
http://scitation.aip.org/content/aip/magazine/phys...
The article states that as transmission lines get longer the capacity goes down. Is this due just to resistance losses, just as for extension cords?






RE: Article on U.S. power grid stability.
http://www.nerc.com/docs/pc/spctf/Application_of_L...
Si duri puer ingeni videtur,
preconem facias vel architectum.
RE: Article on U.S. power grid stability.
There are also problems in over populated areas of trash and other waste removal. Well guess what, it's a problem created by people, and it tskes people to fix it, and the population isen't willing to accept the solutions being offered. Those people selling the latest and greatest solar panels, and wind farms aren't selling energy stability, and the population believes that is what is being offered.
Don't hold your breath on smart grid solutions either yet. They will help some, but I doubt they will fix every thing.
Notice that the US dosen't have an energy policy, it has a global warming policy, and without leadership, or vision we are destined to float on the sea of political fluactions.
RE: Article on U.S. power grid stability.
RE: Article on U.S. power grid stability.
Think of an AC transmission line like a flexible drive shaft, driving a gear with rubber teeth. The more power (torque) you put on that shaft, the more it twists. Likewise, for the same load, the longer shaft will twist more. The rubber teeth are: When the twist reaches a certain angular offset, they will bend and begin to slip by each other.
Power systems also have an inertia, much like rotating mechanical systems. A system that is operating steady state and then perturbed will oscillate about its new operating point. If that system was already running near its limits (the rubber teeth are about to slip) and then perturbed, the resulting transient can push it over this limit and cause it to slip out of sync. A power system running out of sync does not transmit (continuous) power. The power flows back and forth uselessly and can cause actual mechanical torque and damage in generators, motors, etc. were it not for protection equipment (breakers) opening circuits. Which in turn produce their own perturbations. And on, and on.
There. And not even a mention about beer.
RE: Article on U.S. power grid stability.
RE: Article on U.S. power grid stability.
This is not to say that AC power lines are immune from collecting contamination (sea salt, and Mag cloride), but is ash also a factor with DC lines?
RE: Article on U.S. power grid stability.
RE: Article on U.S. power grid stability.