gen costs: 4th load/cost point and convexity

[krishnakanaparthi]

In the RTS.m file, three load/cost points are provided. Could the 4th point for Pmax load and its cost also be provided for the piecewise linear cost function?

Also, is the slightly non-convexity of the slope of the three load/cost points really intended to be or is it emanating from the RTS_96 heat rates itself?

[claytonpbarrows]

@krishnakanaparthi In which units do you see a non-convexity?

In the Net_Heat_Rate P-Q pairs, I don't see it:

I do see what looks like a non-convexity in the Inc_Heat_Rate curves:

But I don't think that matters since Inc_Heat_Rate only defines the slope between the output points on the curve.

The RTS.m file has costs in $/hr. When divided by the output points, the curves look like this:

[claytonpbarrows]

also in the 'reorganize' branch, I've included the 4th point on the heat_rate curve in the reformatted gen.csv

[krishnakanaparthi]

@claytonpbarrows, thank you for the detailed plots and explanation.

Yes, I was looking at the slopes of the load/cost points regarding non-convexity. And as you mentioned, there is non-convexity in the Inc_Heat_Rate curves.

The 4th point on the heat_rate curve was what I was looking for. Thank you again.