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 < ce.murillosanc...@gmail.com> 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 <r...@cornell.edu> 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 < >> mohamed.shaheen9...@gmail.com> 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 >> >> >> >
