Module polycost

Evaluates polynomial generator cost & derivatives.

f = polycost(gencost, Pg) returns the vector of costs evaluated at Pg

df = polycost(gencost, Pg, 1) returns the vector of first derivatives of costs evaluated at Pg

d2f = polycost(gencost, Pg, 2) returns the vector of second derivatives of costs evaluated at Pg

gencost must contain only polynomial costs Pg is in MW, not p.u. (works for Qg too)