The basekV column of the bus matrix has no effect on the solution. I am not aware of any real cost associated with reactive generation for typical power plants. This feature was implemented to allow the OPF to be used to clear markets where there were non-zero offers for reactive generation.
-- Ray Zimmerman Senior Research Associate 419A Warren Hall, Cornell University, Ithaca, NY 14853 phone: (607) 255-9645 On May 8, 2013, at 1:39 PM, spyros gian <[email protected]> wrote: > Dear Dr Zimmerman, > > Does the 'basekV' column in the mpc.bus matrix play any role in the solution > that matpower produces, or is it only for presentation ? > So for example, 10 buses have 138kV and 5 others have 233kV as basekV. > > Secondly, as it is possible to set in the objective function the $/MVARh cost > of generating Q, I would like to ask about the realism of such a thing. > In reality, is there any such thing as cost of generating a MVAR ? > As far as I know, the fuel cost is always in terms of $/MWh. > > Thank you > > From: [email protected] > Subject: Re: Branch limit and bus voltage violation > Date: Tue, 7 May 2013 12:09:25 -0400 > To: [email protected] > > MATPOWER does not include any functions to do this automatically, but it is > trivial with a few lines of Matlab code using 'find' with a condition that > compares the actual MVA flows to RATE_A and actual bus voltages with > VMIN/VMAX. > > -- > Ray Zimmerman > Senior Research Associate > 419A Warren Hall, Cornell University, Ithaca, NY 14853 > phone: (607) 255-9645 > > > > > On May 5, 2013, at 1:30 PM, Umer Ali Alsedeeq Ibrahim <[email protected]> > wrote: > > > > > Dear Dr Zimmerman, > > > I am doing research related to power security. I am simulating a contingency > by setting the branch status to 0. But I want to know the matpower can print > out all the branches that have cross the limit and the buses voltage which > are violated after running power flow > > > Thank you > > > > > > > > From: Ray Zimmerman <[email protected]> > To: MATPOWER discussion forum <[email protected]> > Sent: Wednesday, May 1, 2013 5:32 PM > Subject: Re: areas > > It has no effect whatsoever on the power flow results. It can simply be > useful for manipulating data or reporting data by region. > > -- > Ray Zimmerman > Senior Research Associate > 419A Warren Hall, Cornell University, Ithaca, NY 14853 > phone: (607) 255-9645 > > > > > On May 1, 2013, at 9:13 AM, angelina sirri <[email protected]> wrote: > > Dear Dr Zimmerman, > Could you please explain to me how the division of the system in areas, in > case ieee24 and generally all cases, affects the power flow and the > reliability analysis? > Regards, > Angelina > > > > > > Disclaimer: > This e-mail and any attachments may contain information which is > confidential. They should not be distributed, disclosed or copied to anyone > without the approval of the sender. If you are not one of the intended > recipients of this e-mail, please delete the e-mail and any attachments, and > all copies, and notify the sender by e-mail or telephone. Confidentiality is > not waived or lost by mistaken communication. Before opening this e-mail or > an attachment, you should check them for viruses. تنويه هام: هذه الرسالة > الإلكترونية وأية ملحقات معها قد تحتوي على معلومات سرية، يجب أن لا يوزعا أو > يكشف مضمونهما و/أو نسخهما لأي كان من دون موافقة المرسل. إذا لم تكن واحداً من > الأشخاص الموجه لهم هذا البريد الإلكتروني ووصل إلى بريدك الإلكتروني عن طريق > الخطاً، يرجى حذف الرسالة مع ملحقاتها فضلاً عن حذف جميع نسخها. وبعد ذلك، يرجى > الإتصال بالمرسل عبر البريد الإلكتروني او الهاتف لإبلاغه بالخطأ الحاصل. لا > تفقد سرية المعلومات أو يتنازل عنها بسبب خطأ ناجم عن إرسال وتوجيه البريد > الالكتروني لأشخاص غير مقصودين. كما يتوجب على متلقي البريد الإلكتروني وملحقاته > أن يتفحصوهما دوماً قبل الإطلاع عليهما، للتأكد من خلوهما من الفيروسات > الإلكترونية الضارة. > Qatar General Electricity & Water Corporation > > >
