Have you got any numbers to put to the ideas, savings, cost to implement, running costs etc?
Also is this an internet based system or a signal down the electrical connection system?
I think if there are any electrical engineers in the room, they might bring up the possibility of harmonic issues caused by any such signal.
Apart from that, at the moment, the presentation should be a worthwhile exercise.
p.s. my girlfriend puts on the tumble dryer in the early evening, she dosnt understand or chooses not to understand why its a problem.
RegardsJon M
www.otherpower.co.uk "I am certainly not a perfectionist, the thing is to know where you can take short c
There are numbers in the Web page that backs the presentation and in its references: http://www.earth.org.uk/note-on-dynamic-demand-value.html
But my experience of being on the wrong end of number-drenched PowerPoint poisoning is that your audience will be asleep before the first decimal point!
But to cut to your main point, I'll make it clear that ordinary appliances will achieve this by listening to the mains frequency (it drops when the grid is overloaded). Well spotted! Thanks!
Laptops and PCs without that mains-frequency-sensing hardware might instead listen to a Web site that does it for them...
Rgds
Damon [ Parent ]
If it where me, not that it is. I would expect to see some numbers even in a short presentation. Hopefully the engineers have chosen to be there so they are more likely to not switch off.
Are there any harmonic issues with the sensing as these can be generated from switch mode power supplies that are turning up more and more?
Frequency can also drop due to poor power factor not that its such an issue for domestic loads.
I am glad someone is bringing up this idea to more people who might do something about it.
Have you considered getting any work published in say ReNew?
Carry on the good work, still green eyed with you PV array.
Jon M
www.otherpower.co.uk "I am certainly not a perfectionist, the thing is to know where you can take short c[ Parent ]
I don't believe that sensing should interact badly with non-linear loads if done carefully, especially if the DD loads are switched in a suitably benign way, eg at the zero crossings.
Frequency would not be affected by power factor (it's not a local feature but of the entire synchronous grid), though voltage and current are distorted by it. Or maybe I've misunderstood you again?
Damon
PS. I know nothing about ReNew? URL?[ Parent ]
There is some shadowing issues with no linear loads, these can cause an apparent frequency change to less sophisticated equipment. I agree with you, it needs to be down carefully.
The renew magazine can be found here http://www.ata.org.au/publications/renew
Worth a read. please check your email :)
Damon[ Parent ]
