[Bldg-sim] Dynamic demand

[Chris Yates]

Just out of interest really...

Does anybody have any experience of modelling dynamic demand systems. 
For example, a heat pump might "listen" to the frequency of the 
electricity grid (lower frequency represents large concurrent demand) 
and adjust it's demand down accordingly.

It just seems like an interesting modelling exercise and I was wondering 
if anybody has had any success and with which software.

Cheers

Chris