Just like the world hunger was a solved problem the day we invented Philly cheesesteak sandwiches and rice crops. The march of technology is such a relentless marvel.
It is a nice solution in theory. The implementation details however would be very hairy and difficult. You have to agree to the protocol on what the anchor time for zero crossing is, you have to get power plants and large scale grid compensation systems to dance to that beat first. This in itself would be no small feat. And then somehow get all the small inverters GPS enabled, which places extra constraints on their installation locations etc.
And then, your entire power grid will have a single point of failure - GPS outage, or you will have to factor in redundancy protocols.
You do not understand error propagation. Synchronizing at the point of connection does not mean that you are synchronizing with any particular "power plant", you are synchronizing with a relatively randomly distorted signal that gets its contributions in worst case from multiple neighborhood inverters that are also trying to sync and are all somewhat off, and nearby real world loads with different apparent power and other sources of noise.
Coordinating the power grid needs information, today the information carried for proper coordination ( AC waveform detecion by grid inverter ) is not sufficient to make things work at large scale. Whether you transmit the coordination signals ( i.e. extra bits of information ) in-band ( over powerline, superimposed on the AC wave ) or out of band on a separate carrier is the question of implementation. Both in-band and out of band would have their upsides and downsides. Fact of the matter is that todays grid is not built for that.
Simple case, assume there is a dozen or so high power solar installations in my neighborhood, delivering most of the peak power output. The requirement for grid-tie inverters is matching the phase within 1% of the 50/60hz waveform read at the connection point. The question is, _whose_ waveform is mine really following ? Is it the neighbors ? Which one is his following ? How does the error propagate and does it multiply ? That is the gist of the coordination problem.
I agree with most of your post, but i disagree with the assertion that grid "MUST be centralized". It must be well-coordinated, and centralization is one of the ways to achieve coordination, but not the only one. Power grid currently is built with assumption of central coordination, that's why there are these growing pains with distributed generation.
Its not just frequency and voltage, there is phase and power factor, harmonics etc. Grid tie inverters are not simple pieces of equipment by any means - they try to synchronize and follow the grid power delivery by following grid input AC waveform at the point of connection, which is a limited bit of information and may not be fully in sync with macro-scale grid need at any given moment. For a perfectly synched network you would have to have atomic clocks and low latency radio link network with each point of generation, that's obviously not going to happen, so hacks, power factor correction systems, extra reactive loads etc are and will have to be implemented.
My morally correct is not your morally correct. It is impossible for a company to do anything morally correct as universal morality code would be an oxymoron.
The internet has become an intertwined collection of hugboxes, propaganda outlets, and viral marketing solutions, all held together by increasingly valueless data mining operations.
And then when google moves more stuff from the base system to play services, everyone is crying bloody murder for taking stuff away from AOSP and not open sourcing anything. There is no winning, is there
Ok, if this is a systems programming language, where is the first RTOS kernel with all the necessary lowlevel bits and pieces to getting it running on a modest modren 32-bit MCU ? Say, any Cortex-M3 ? Device drivers for basics, register access ? Because, it would be awesome to have all these theoretical safety guarantees and stuff, while programming hardware. Is there even a cross-compiler ?
Ok, here are claims made without a final conclusion by NTSB anywhere in sight. How the heck can they assume that NTSB does not come out and burn their entire design to ground ? How do they even assume NTSB investigation will conclude before end of the year ?
What a hubris.
Your design grandfather Rutan retired years ago, your chief designer left the company.. and you are still making these grandiose claims ?
Kill SLS/Orion and save what, 4 billion a year ? Kill JWST and save 10 billion over its lifetime, kill MSL 2 and save 2 billion. The question is, to what end ?
Radhakrishnan was basically Indias "W. von Braun" and made ISRO the success it is today - including MOM. He just retired today. After delivering five consecutive successful PSLV missions, including the PSLV-C08 that lifted Chandrayaan-I, and leading several crucial technology development at the Vikram Sarabhai Space Centre (VSSC), Radhakrishnan took the reins of India's space programme in November 2009.
With the 12 successful PSLV missions, the successful launch of GSLV with indigenous cryogenic stage, the Mars Orbiter Mission, LVM-3 experimental flight with CARE module, the six Insat/GSAT satellites, three navigation satellites and six earth observation satellites (including RISAT-1, the first microwave imaging satellite), Radhakrishnan is leaving Isro at its “most glorified pedestal ever”, it said. He has been nominated to Natures top ten scientists list http://www.thehindu.com/sci-te... http://www.business-standard.c...
It's not even logical to expect to prove God with science
It's not even logical for science to prove anything. Science either accepts or rejects ideas and theories based on evidence, and is always open to revise the previous acceptance or also rejects based on new evidence or new ways of looking at things.
And nobody is going to build big budget video games if everything in mobile app stores costs a dollar. Except Chris Roberts somehow managed to score $60M dollars for a game without shipping anything.
Dude. Even Steorn is still around ! Apparently they started re-tweeting or posting some funnay stuff about the new free house heating systems again. Boggles my mind.
Slashdot Mirror
Mainly because Javascript and code on demand execution model. Javascript libraries with GPL are a non starter.
Just like the world hunger was a solved problem the day we invented Philly cheesesteak sandwiches and rice crops. The march of technology is such a relentless marvel.
It is a nice solution in theory. The implementation details however would be very hairy and difficult. You have to agree to the protocol on what the anchor time for zero crossing is, you have to get power plants and large scale grid compensation systems to dance to that beat first. This in itself would be no small feat. And then somehow get all the small inverters GPS enabled, which places extra constraints on their installation locations etc.
And then, your entire power grid will have a single point of failure - GPS outage, or you will have to factor in redundancy protocols.
You do not understand error propagation.
Synchronizing at the point of connection does not mean that you are synchronizing with any particular "power plant", you are synchronizing with a relatively randomly distorted signal that gets its contributions in worst case from multiple neighborhood inverters that are also trying to sync and are all somewhat off, and nearby real world loads with different apparent power and other sources of noise.
Coordinating the power grid needs information, today the information carried for proper coordination ( AC waveform detecion by grid inverter ) is not sufficient to make things work at large scale.
Whether you transmit the coordination signals ( i.e. extra bits of information ) in-band ( over powerline, superimposed on the AC wave ) or out of band on a separate carrier is the question of implementation. Both in-band and out of band would have their upsides and downsides.
Fact of the matter is that todays grid is not built for that.
Simple case, assume there is a dozen or so high power solar installations in my neighborhood, delivering most of the peak power output. The requirement for grid-tie inverters is matching the phase within 1% of the 50/60hz waveform read at the connection point. The question is, _whose_ waveform is mine really following ? Is it the neighbors ? Which one is his following ? How does the error propagate and does it multiply ? That is the gist of the coordination problem.
I agree with most of your post, but i disagree with the assertion that grid "MUST be centralized". It must be well-coordinated, and centralization is one of the ways to achieve coordination, but not the only one.
Power grid currently is built with assumption of central coordination, that's why there are these growing pains with distributed generation.
Its not just frequency and voltage, there is phase and power factor, harmonics etc. Grid tie inverters are not simple pieces of equipment by any means - they try to synchronize and follow the grid power delivery by following grid input AC waveform at the point of connection, which is a limited bit of information and may not be fully in sync with macro-scale grid need at any given moment.
For a perfectly synched network you would have to have atomic clocks and low latency radio link network with each point of generation, that's obviously not going to happen, so hacks, power factor correction systems, extra reactive loads etc are and will have to be implemented.
Yeah, but if your energy density is so low that a supercapacitor beats it, you have nothing useful, as they will always have superior power density.
Well, that can be easily fixed with extra video recorders at SAM sites, cockpits of jet fighters and military command and control rooms. No ?
My morally correct is not your morally correct. It is impossible for a company to do anything morally correct as universal morality code would be an oxymoron.
I just designed and built a new PC with the specified lifetime of 103 years. I also sold two of them to my buddies.
Free software forever , yay microsoft !
The internet has become an intertwined collection of hugboxes, propaganda outlets, and viral marketing solutions, all held together by increasingly valueless data mining operations.
Hi. There are no cookies : http://gopher.floodgap.com/ove...
And then when google moves more stuff from the base system to play services, everyone is crying bloody murder for taking stuff away from AOSP and not open sourcing anything.
There is no winning, is there
That looks actually pretty cool, thank you.
Ok, if this is a systems programming language, where is the first RTOS kernel with all the necessary lowlevel bits and pieces to getting it running on a modest modren 32-bit MCU ? Say, any Cortex-M3 ? Device drivers for basics, register access ?
Because, it would be awesome to have all these theoretical safety guarantees and stuff, while programming hardware.
Is there even a cross-compiler ?
Ok, here are claims made without a final conclusion by NTSB anywhere in sight. How the heck can they assume that NTSB does not come out and burn their entire design to ground ? How do they even assume NTSB investigation will conclude before end of the year ?
What a hubris.
Your design grandfather Rutan retired years ago, your chief designer left the company .. and you are still making these grandiose claims ?
Breivik was Christian. So was David Koresh.
Kill SLS/Orion and save what, 4 billion a year ? Kill JWST and save 10 billion over its lifetime, kill MSL 2 and save 2 billion.
The question is, to what end ?
One you wont hear : I propose a private mission to Uranus !
Well, maybe in San Francisco.
http://www.usatoday.com/story/...
any further questions?
Radhakrishnan was basically Indias "W. von Braun" and made ISRO the success it is today - including MOM. He just retired today.
After delivering five consecutive successful PSLV missions, including the PSLV-C08 that lifted Chandrayaan-I, and leading several crucial technology development at the Vikram Sarabhai Space Centre (VSSC), Radhakrishnan took the reins of India's space programme in November 2009.
With the 12 successful PSLV missions, the successful launch of GSLV with indigenous cryogenic stage, the Mars Orbiter Mission, LVM-3 experimental flight with CARE module, the six Insat/GSAT satellites, three navigation satellites and six earth observation satellites (including RISAT-1, the first microwave imaging satellite), Radhakrishnan is leaving Isro at its “most glorified pedestal ever”, it said.
He has been nominated to Natures top ten scientists list
http://www.thehindu.com/sci-te...
http://www.business-standard.c...
It's not even logical to expect to prove God with science
It's not even logical for science to prove anything. Science either accepts or rejects ideas and theories based on evidence, and is always open to revise the previous acceptance or also rejects based on new evidence or new ways of looking at things.
http://undsci.berkeley.edu/tea...
Well, binaries dont talk much so there is that.
And nobody is going to build big budget video games if everything in mobile app stores costs a dollar. Except Chris Roberts somehow managed to score $60M dollars for a game without shipping anything.
Dude. Even Steorn is still around ! Apparently they started re-tweeting or posting some funnay stuff about the new free house heating systems again. Boggles my mind.