Good for you that you've never had a battery leak its (moving) electrolyte into your equipment, nor had to run an equalization cycle on a lead-acid battery to stir up its electrolyte, nor had to deal with the complexity a flow battery.
Most developed world grids (a) don't have government-funded entities deliberately gaming the system and price gouging which is the claim that I've heard recently about SA and (b) have historically have more mass of spinning turbine which has supplied the very short-term ability to ride out spikes and troughs in demand as a lucky side-effect. Synthetic inertia and frequency support are the opposite of HFT as entirely a smoothing effect not speculative/leveraged (and I've worked in HFT).
No sudden spikes in demand you say? While there are indeed people who spend all their time in the system operators trying not to be caught out, those spikes certainly exist and are not entirely predicable in size or timing.
On the GB grid, the "TV pickup" remains a real effect, in the middle of and and the end of popular TV programmes and sports events. We can even estimate the popularity of our various royals by the size of the pickup when their weddings finish...
I run (most of) my own domains and servers and have since the mid-90s, and on top of the background 10,000 SPAM delivery attempts per day to my poor servers for the last decades, someone one decided to waste SPAMmers' time by creating a page full of made up user@dom.ain except without checking if some of those 'made-up' domains were in fact real. That noticeably added to the wave of rubbish for a while.
That's a little harsh. If paying the rent requires getting grants, you'll aim to get grants. What do you call what you do to get money? (Plus let's not insult in passing other groups that you clearly consider beneath contempt...)
As someone who used the early JVMs i production, Microsoft's was NOT better. It was a JVM that would crash randomly, that could not interface with OLE even though Sun bent over backwards to make it possible, and like many Microsoft code bases at the time had very poor docs and failed to follow even them. That was easily the nastiest buggiest JVM impl that I ever touched.
At least, this is what my flashback tells me, now that you set it off! %-P
Avoiding oscillations is potentially the easy part. Ddistributed and robust algorithms are already in use, even if not in this precise application yet.
1) Do a local slow/no charge override based on local frequency and voltage measurements. That's protective at the simplest level, though can go wrong (see May 2008 GB grid blackouts for 500l people from problems with misconfigured G59 gear). Slightly randomise disconnection times based on severity of voltage/frequency dip.
2) Randomise reconnection with something like the randomised exponential backoff used for other shared resources such as Ethernet.
Reverse the above if able to discharge to grid, and add some ride-through.
3) Only if the above is OK then let your remote control have its way.
When the fuel is free, the notion of 'efficiency' is largely irrelevant in this context: it only constrains maximum generation from a given roof space.
Given that in a small London UK home I am net energy zero with what is on my roof with 10 year old technology, it is even less likely to be a critical constraint in CA.
It would be nice to have nearer 100% capture efficiency (eg with a ferroelectric system) since then I could cover all my local electrical consumption through practically all of winter with fairly small storage, and would only need a seasonal heat store, but in effect that's an engineering optimisation.
Rgds
Damon
PS. Of course, I'm assuming that your comment is in good faith. But your comments are rather tired old straw men already extensively discussed. Thank goodness we never put lead in our road fuel and let mercury and thorium out of our coal smoke stacks or allowed people collecting fossil fuels to die in large numbers! All energy systems have pros and cons.
1) Where did he do the crime? Why should be be sucked into the nastiest jurisdiction that his packets passed through? It's a genuinely unresolved issue, legally.
2) The huge asymmetry between extradition in either direction, coupled with the posturing of US officials, has reduced willingness by everyone including the courts to see US prosecution as likely to be fair and proportionate. Eventually posturing has consequences.
An Air wasn't slower for my purposes when I bought it, and still now speed is rarely an issue (and maxed out RAM and SSD minimises that).
I do a fair amount of dev work (eg make- or IDE- driven (cross-)compile toolchain). I'm quite happy to tune my build processes to speed them up if need be, rather than hoping for 20% faster silicon.
Some of the stuff I build is built or targeted to less powerful devices such as the RPi and MCUs.
I don't play video games.
I haven't done 3D rendering for years.
For me, saving weight and space in my backpack was key, and nominal peak performance much less of an issue.
As it happens the cemetery has a sensible opening schedule within sight of my desk right now that varies by month to acknowledge that it's not good to have people wandering around in there after dark. It's not that hard.
Another example: our local schools already coordinate on opening hours and holidays to avoid creating problems for parents. Adjusting the hours to something sensible and safe by (half-)term probably would not be hard.
9-5 never made that much sense and doesn't even acknowledge that humans are diurnal and live at different latitudes with different sub hours and climates!
Let's stop working to an entirely illogical rigid timetable, messing around with the clock to try and fudge it, and, given that most of us have smart assistants with calendars, etc, go with something that better reflects reality, ASAP.
Birching seemed like a good idea at the time, but seems less so now that most societies have given it up. DST will be much the same in the rear-view mirror.
But whatever, calling the poster above an idiot does not advance anything.
Slashdot Mirror
Good for you that you've never had a battery leak its (moving) electrolyte into your equipment, nor had to run an equalization cycle on a lead-acid battery to stir up its electrolyte, nor had to deal with the complexity a flow battery.
If you only want to hear about completely finished products on shelves then read a catalogue, not /.
https://slashdot.org/comments....
Still poor trolling.
If the facts as then understood change then I will update my views to match.
Very poor trolling.
Please go away.
No.
And you know that to be untrue.
Very dull old hat, and entirely irrelevant to where we actually are now...
Yes, this product would be "SharkLink". I'll get my (shiny, buoyant) coat.
I still prefer the notion of a network of ocean line-dancing sharks supporting a mesh net of laser beams just skimming the surface.
The training and fish bill is high, and this network facilitates phishing too, but you can't have everything.
Rgds
Damon
Oooooo! I know, I know!!!
Most developed world grids (a) don't have government-funded entities deliberately gaming the system and price gouging which is the claim that I've heard recently about SA and (b) have historically have more mass of spinning turbine which has supplied the very short-term ability to ride out spikes and troughs in demand as a lucky side-effect. Synthetic inertia and frequency support are the opposite of HFT as entirely a smoothing effect not speculative/leveraged (and I've worked in HFT).
Rgds
Damon
No sudden spikes in demand you say? While there are indeed people who spend all their time in the system operators trying not to be caught out, those spikes certainly exist and are not entirely predicable in size or timing.
On the GB grid, the "TV pickup" remains a real effect, in the middle of and and the end of popular TV programmes and sports events. We can even estimate the popularity of our various royals by the size of the pickup when their weddings finish...
Rgds
Damon
So are you OK? The flooding seems to be fairly bad, looking at news reports from outside.
Not just gmail.
I run (most of) my own domains and servers and have since the mid-90s, and on top of the background 10,000 SPAM delivery attempts per day to my poor servers for the last decades, someone one decided to waste SPAMmers' time by creating a page full of made up user@dom.ain except without checking if some of those 'made-up' domains were in fact real. That noticeably added to the wave of rubbish for a while.
Rgds
Damon
What has this nasty and completely unfactual comment got to do with anything at all?
Next off: start shouting random hateful insults from a street corner?
No, I am not German.
That's a little harsh. If paying the rent requires getting grants, you'll aim to get grants. What do you call what you do to get money? (Plus let's not insult in passing other groups that you clearly consider beneath contempt...)
As someone who used the early JVMs i production, Microsoft's was NOT better. It was a JVM that would crash randomly, that could not interface with OLE even though Sun bent over backwards to make it possible, and like many Microsoft code bases at the time had very poor docs and failed to follow even them. That was easily the nastiest buggiest JVM impl that I ever touched.
At least, this is what my flashback tells me, now that you set it off! %-P
Rgds
Damon
Why not? Death is not exactly the same for large plants as it is for humans.
And "suddenly" seems entirely justified as a in a very short span relative to their mean age.
Rgds
Damon
Avoiding oscillations is potentially the easy part. Ddistributed and robust algorithms are already in use, even if not in this precise application yet.
1) Do a local slow/no charge override based on local frequency and voltage measurements. That's protective at the simplest level, though can go wrong (see May 2008 GB grid blackouts for 500l people from problems with misconfigured G59 gear). Slightly randomise disconnection times based on severity of voltage/frequency dip.
2) Randomise reconnection with something like the randomised exponential backoff used for other shared resources such as Ethernet.
Reverse the above if able to discharge to grid, and add some ride-through.
3) Only if the above is OK then let your remote control have its way.
Rgds
Damon
Have a look at this as part of the solution (the smart mobile metering):
http://www.earth.org.uk/note-o...
and another company I know well, Upside:
https://upsideenergy.co.uk/
I also think that we're missing some smaller-scale software-based solutions available already:
http://www.earth.org.uk/Hey-Si...
Rgds
Damon
When the fuel is free, the notion of 'efficiency' is largely irrelevant in this context: it only constrains maximum generation from a given roof space.
Given that in a small London UK home I am net energy zero with what is on my roof with 10 year old technology, it is even less likely to be a critical constraint in CA.
It would be nice to have nearer 100% capture efficiency (eg with a ferroelectric system) since then I could cover all my local electrical consumption through practically all of winter with fairly small storage, and would only need a seasonal heat store, but in effect that's an engineering optimisation.
Rgds
Damon
PS. Of course, I'm assuming that your comment is in good faith. But your comments are rather tired old straw men already extensively discussed. Thank goodness we never put lead in our road fuel and let mercury and thorium out of our coal smoke stacks or allowed people collecting fossil fuels to die in large numbers! All energy systems have pros and cons.
1) Where did he do the crime? Why should be be sucked into the nastiest jurisdiction that his packets passed through? It's a genuinely unresolved issue, legally.
2) The huge asymmetry between extradition in either direction, coupled with the posturing of US officials, has reduced willingness by everyone including the courts to see US prosecution as likely to be fair and proportionate. Eventually posturing has consequences.
Rgds
Damon
> wind resistance scales up exponentially
No.
Rgds
Damon
Had to be ordered on line or at the store, thus adding a day or two's delay, but I did so and hit the then 8GB RAM / 256GB SSD limits.
Rgds
Damon
An Air wasn't slower for my purposes when I bought it, and still now speed is rarely an issue (and maxed out RAM and SSD minimises that).
I do a fair amount of dev work (eg make- or IDE- driven (cross-)compile toolchain). I'm quite happy to tune my build processes to speed them up if need be, rather than hoping for 20% faster silicon.
Some of the stuff I build is built or targeted to less powerful devices such as the RPi and MCUs.
I don't play video games.
I haven't done 3D rendering for years.
For me, saving weight and space in my backpack was key, and nominal peak performance much less of an issue.
Rgds
Damon
Being rude louder doesn't improve your point.
As it happens the cemetery has a sensible opening schedule within sight of my desk right now that varies by month to acknowledge that it's not good to have people wandering around in there after dark. It's not that hard.
Another example: our local schools already coordinate on opening hours and holidays to avoid creating problems for parents. Adjusting the hours to something sensible and safe by (half-)term probably would not be hard.
9-5 never made that much sense and doesn't even acknowledge that humans are diurnal and live at different latitudes with different sub hours and climates!
Let's stop working to an entirely illogical rigid timetable, messing around with the clock to try and fudge it, and, given that most of us have smart assistants with calendars, etc, go with something that better reflects reality, ASAP.
Birching seemed like a good idea at the time, but seems less so now that most societies have given it up. DST will be much the same in the rear-view mirror.
But whatever, calling the poster above an idiot does not advance anything.
Rgds
Damon