In MOST, the length of the time period is set by the Delta_T field of the md input struct (see Table 5-6 in the MOST User’s Manual <http://www.pserc.cornell.edu/matpower/docs/MOST-manual-1.0.pdf>). The default is 1 (1 hour), but you can feel free to change it. The inter-temporal ramp limit will still be calculated from RAMP_30. For example, by default the limit on the period-to-period dispatch change is 2*RAMP_30. If you were to set Delta_T to 1/6, that is a 10-minute time step, then the period-to-period dispatch change would be limited to RAMP_30 / 3.
The loadmd() function does not have an input that lets you alter the Delta_T field, so you’ll have to modify it manually after calling loadmd(). Ray > On Mar 15, 2018, at 3:46 PM, Bainan Xia <[email protected]> wrote: > > Hi, > > I’ve got a naïve question on the length of the ‘time period’ in Matpower. > Previously, I presume it to be 1 hour. However, when adding ramp constraints > through parameter RAMP_30, which defines the ramp capability in 30mins (not > in terms of time periods/units), I found none of those constraints actually > bind according to the result. Hence, I’m wondering what is the default length > of ‘time period’ in Matpower and whether there is a way to change it. > > Thanks for the helpJ > > Best, > Bainan
