For those interested, TIMES v3.6.0 will support simple dynamic user constraints between timeslices.
Here are three example equations related to "ramps" that could be defined with TIMES v3.6.0:
The first equation, HRAMP-REL, would limit the hourly ramp-up of the technology ECOASTM005 to at most 5% of the full capacity (assuming the DAYNITE timeslices are hourly).
The second equation, HRAMP-ABS, would limit the hourly ramp-up of this technology to at most 0.1 GW (=3.1536 PJ/a), and the hourly ramp-down to at most 0.2 GW (=6.3072 PJ/a).
The third equation, SRAMP-REL, would limit the seasonal ramp-up of this technology to at most 30% of the full capacity (i.e. average power level in each season is at most the average power level in previous season + capacity*0.3).
Hopefully this new feature can be useful for defining dynamic constraints at Time Slice levels.