No, I don't On Sun, Feb 10, 2019, 1:24 AM Carlos E Murillo-Sanchez < [email protected] wrote:
> Do you include reactive generation in the decision variables of your > formulation? If you don't, then your optimization algorithm does not > really have much impact on voltages. > > carlos. > > Mohamed Shaheen wrote: > > I'm currently using penalty functions with GA and Tree-Seed, But after > running Tree-Seed algorithm including 'runpf' inside, All solutions have > violations and the algorithm chooses the minimum of these solutions which > is also a false solution. > ᐧ > > On Sat, 9 Feb 2019 at 15:42, Carlos E Murillo-Sanchez < > [email protected]> wrote: > >> Rather, it seems that your optimization method should take into account >> any constraint violation and fix the issue by itself. In some methods, >> such as GA, one way to do this is by using penalty functions on constraint >> violations. >> >> carlos. >> >> >> Mohamed Shaheen wrote: >> >> I need to enforce limits, but I aim to get the optimal solution and best >> parameters using another optimization method called 'Tree Seed' and compare >> it with 'Genetic Algorithm' after running normal power flow, So I'm not >> seeking the optimal solution using Matpower itself. >> Can Matpower help to do this? >> >> ᐧ >> >> On Fri, 8 Feb 2019 at 23:53, Ray Zimmerman <[email protected]> wrote: >> >>> The power flow problem solved by runpf does not take into account >>> voltage limits. If you need to enforce limits, you can use an appropriately >>> constrained OPF. >>> >>> In this case, it just so happens that the initial voltage specified for >>> bus 31 in the case57.m file happens to be the voltage at the power flow >>> solution. >>> >>> Ray >>> >>> >>> On Feb 8, 2019, at 2:54 PM, Mohamed Shaheen < >>> [email protected]> wrote: >>> >>> Dear Sir, >>> >>> Regarding the case57, the voltage of bus 31 is 0.936 p.u which is less >>> than the min. limit of bus voltage (0.94). Every time I run 'runpf', the >>> voltage value is 0.936 and it doesn't change although it is a PQ bus. >>> I need your help, please. >>> >>> Regards, >>> Mohamed Shaheen. >>> >>> Msc. student at Ain Shams University in Egypt >>> Teaching Assistant in Future University in Egypt >>> ᐧ >>> >>> >>> >> >
