Dear Shiyang, I also want to do it by Monte Carlo, but not loads. I want to have a distribution of voltage as input. When I load loadcase it gives error. My mean is this: I want load variable voltage values in bus matrix. Is it possible?
Best Wishes Silvio Miceli On Fri, Mar 23, 2012 at 23:19, 李诗旸 <[email protected]> wrote: > HI Silvio Miceli,**** > > I think Mr. Zimmerman’s suggestion is the way like Monte Carlo Method. > Normally, you may have the distributions of some parameters (inputs) such > as loads and active generations, then you could use that way to get the > distributions of the optimized voltages (output) numerically.**** > > ** ** > > Sincerely**** > > Shiyang Li**** > > ** ** > > *发件人:* [email protected] [mailto: > [email protected]] *代表 *Silvio Miceli > *发送时间:* 2012年3月24日 4:31 > *收件人:* MATPOWER discussion forum; Ray Zimmerman > *主题:* Re: probabilistic voltage**** > > ** ** > > I want to a have a distribution of voltage at buses that it is an > optimization variable in MATPOWER? These distributions are the inputs for > the OPF. > > **** > > Best Wishes**** > > ** ** > > Silvio Miceli > > **** > > On Fri, Mar 23, 2012 at 21:25, Ray Zimmerman <[email protected]> wrote:**** > > I'm afraid I don't know what *you* mean. The voltages are *outputs* of > MATPOWER's OPF. So what are the input parameters that you would like to be > stochastic? Voltage limits?**** > > ** ** > > -- **** > > Ray Zimmerman**** > > Senior Research Associate**** > > 419A Warren Hall, Cornell University, Ithaca, NY 14853**** > > phone: (607) 255-9645**** > > ** ** > > ** ** > > ** ** > > On Mar 23, 2012, at 2:40 PM, Silvio Miceli wrote:**** > > > > **** > > My problem is this I cannot do loadcase. How can I do many, many > deterministic optimization? If I introduce voltage as x and do it with a > FOR?**** > > ** ** > > Could you please explain better? I didn't understand. I am sorry.**** > > > **** > > Best Wishes**** > > ** ** > > Silvio Miceli > > **** > > On Fri, Mar 23, 2012 at 19:22, Ray Zimmerman <[email protected]> wrote:**** > > MATPOWER does not implement any stochastic optimization. All of it's > variables and parameters are assumed to be deterministic. However, one > approach to handling probabilistic parameters is to simply do many, many > deterministic optimizations, where each one involves, for each > probabilistic parameter, drawing a value from the corresponding > distribution. Such an approach could use MATPOWER's OPF as a subroutine to > solve the deterministic sub-problem.**** > > ** ** > > -- **** > > Ray Zimmerman**** > > Senior Research Associate**** > > 419A Warren Hall, Cornell University, Ithaca, NY 14853**** > > phone: (607) 255-9645**** > > ** ** > > ** ** > > ** ** > > On Mar 23, 2012, at 12:42 PM, Silvio Miceli wrote:**** > > > > **** > > Dear Dr. Zimmerman,**** > > ** ** > > I want to have probabilistic voltage or reactive power in an OPF. In other > words, I want to do OPF with probabilistic variables,e.g. voltage should be > a normal distribution of voltage. How can insert this kind of variables to > case file of MATPOWER? Is there this possibility in MATPOWER?**** > > ** ** > > Best Wishes**** > > ** ** > > Silvio Miceli**** > > ** ** > > ** ** > > ** ** > > ** ** > > ** ** > > ** ** >
