Basic questions about run opf in MATPOWER

2013-06-18 Thread linhomeperson
Dear all, I tried to run OPF with runopf function in MATPOWER. 1, What is the default objective function ( e.g. "runopf(case30)" )? In the manual, the objective function is fp and fq, however, what is the detailed expression of function fp and fq. 2, how can I replace fp and fq with my own us

Re: Basic questions about run opf in MATPOWER

2013-06-28 Thread Home Lin
Dr. Zimmerman, Do you have any idea about these questions? I've understand question 1: the answer should be: the default objective function of runopf for both AC OPF and DC OPF are the same polynomial defined by the gencost in the case struct. Please correct it if it is wrong. Thanks, Lin 201

Re: Basic questions about run opf in MATPOWER

2013-06-28 Thread Ray Zimmerman
1. The default is defined by the gencost, either a polynomial or piecewise-linear cost on P. 2. Set the costs defined by gencost to zero, i.e. use a linear function with a zero coefficient. 3. It is not essential to make the distinction between control and state variables in an optimization prob