Re: BUS VOLTAGE SENSITIVITIES

Hello For calculation of VSI, you need to do eigen analysis instead of just inverting the reduced Jacobian and then to get the reciprocal of them. Regards. Hwachang Song --- Original Message --- >From: "Zenifar parekh" To : matpower-l@cornell.edu Date: 2014/11/18 화요일 오후 3:44:48 S

RE: dealing with unit de-commitment

Thanks for referencing the subject section as i have apparently overlooked it. I agree with you about the AC OPF but i have decided to use DC OPF for the large system. I have a particular question about step-3 and step-4 in particular. If i understand correctly from the code, step-3 selects cand

Re: dealing with unit de-commitment

Hi Mans, Yes, the unit-decommitment is handled in uopf.m. And, yes, it can be very, very slow, especially for large systems. It is a very brute-force method. The basic algorithm is as described in Chapter 8 in the User’s Manual , with the except

Re: PQ Capability HVDC Converter

Hi Christian, Well, if you were looking for some explicit lines of code like the equation you imagine, you are not going to find it. The problem is defined in the form found in equations (6.1)-(6.4) in the manual and then passed to the chosen solver, which handles the variable bounds and non-li

Re: Modeling a Battery in OPF

I’m sorry, but I have no idea what “garver.m configuration” is. Ray > On Nov 17, 2014, at 7:40 PM, Manish Thapa wrote: > > Dear Prof. Ray, > > I am also in addition thinking to model virtual generators on a number of > buses. These virtual generators could in practice act as my battery.

Re: BUS VOLTAGE SENSITIVITIES

See the documentation of makeJac(). It states that "Bus numbers must be consecutive beginning at 1 (internal ordering)". case300 is the smallest case in MATPOWER where the bus numbering is unordered. Call ext2int() before makeJac() to convert from external (unordered) to internal (ordered) bus