Dear Leon Thurber, Thanks again . the cause behind I don't want to use OPF is I want to optimize the cost funtion by my own developed program. Here I just need simple load flow to study the developed program. Thanks
On Jan 27, 2017 7:21 PM, "Leon Thurner" <[email protected]> wrote: > Dear Siddique Tomal, > > > > again, that sounds exactly like a problem that one would solve with an > optimal power flow. The OPF allows yout to define costs for active/reactive > power, constraints for vmin/vmax and then to find the network state that > minimizes the cost function while complying with all constraints. What is > the reason you don’t want to or can’t use an OPF for this? > > > > Best > > Leon > > > > *Von:* [email protected] [mailto: > [email protected]] *Im Auftrag von *siddique > tomal > *Gesendet:* Freitag, 27. Januar 2017 13:57 > *An:* MATPOWER discussion forum <[email protected]> > *Betreff:* Re: Bus Voltage Constraints > > > > Dear Leon Thurner, > > Thanks for the reply. Actually in my work the active and reactive wont be > fixed. I will change the value of both power more specifically the reactive > power frequently to have a best value my cost function. And as the power is > not fixed here so bus voltage is changeable. And here i want to put a limit > for the change of bus voltage. Hope you understand and help me to find a > way to solve. > > Thanks > > > > On Fri, Jan 27, 2017 at 6:46 PM, Leon Thurner <[email protected]> > wrote: > > Dear Siddique Tomal, > > > > having constraints for bus voltages is only possible if you have > flexibilities that allow you to keep those constraints. In a normal power > flow you do not have these flexibilties, since active and reactive power is > fixed at most buses. What you ask for is only possible with an OPF and is > in fact exactly what the OPF is designed to do. > > > > Regards > > Leon > > > > *Von:* [email protected] [mailto: > [email protected]] *Im Auftrag von *siddique > tomal > *Gesendet:* Freitag, 27. Januar 2017 13:33 > *An:* [email protected] > *Betreff:* Bus Voltage Constraints > > > > Dear all, > > i have a query about bus voltage constraints in normal power flow. I want > to set a limit for every bus voltage (+-5%). So I’m asking help regarding > this fact. It is just like* 'vmax'* and *'vmin'* column in *bus data > matrix* works only in optimal power flow. but i need this feature for > normal power flow. > > Thanks > > >
