RE: difference between runpf() and runopf()

2017-07-17 Thread Sarmad Hanif
runpf runs the power flow --> finding voltage magnitude and angles for given values of P and Q (simplified explanation) runopf runs the optimal power flow --> optimizing the power flowing in the grid to achieve a minimized generation cost (simplified explanation) Check the matpower manual for

Re: DC Stated Estimation for calculation of Active Power Flow

2017-07-17 Thread Saeed Ahmed
​Sir, Here i try to elaborate my question for your kind guidance I want to solve a non linear (AC Power Flow ) Problem using DC approximation (linear) method which gives estimations of lines power flows on AC power systems.It is non-iterative and absolutely convergent but less accurate than AC

difference between runpf() and runopf()

2017-07-17 Thread Roshani Thapa
What is the difference between runpf() and runopf()? i am using GA for an optimisation problem. i want to calculate the 24hours I2R loss(which is my fitness function) of a radial feeder using forecasted hourly load profile. Then Running matlab GA to minimise I2R loss will result a hourly switching

code

2017-07-17 Thread Marwan Ahmed Al_asali
I need this code by matlab IEEE 68-Bus power system ...

Re: DC Power Flow

2017-07-17 Thread Marwan Ahmed Al_asali
I need code to perform of TWO-AREA power SYSTEMS On 17 July 2017 at 19:29, Saeed Ahmed wrote: > Respected Jose Luis Marín > > Thanks for you guidance. I will try to be more precise and specific here. > > > Regards > Saeed Ahmed > PhD Student > University of Ulsan,

Re: DC Stated Estimation for calculation of Active Power Flow

2017-07-17 Thread Ray Zimmerman
You can solve the DC power flow using rundcpf(). And MATPOWER does not include a “WLS” function, so I’m not sure what you are referring to there. Ray > On Jul 17, 2017, at 9:34 AM, Saeed Ahmed wrote: > > Hi every one > > I need help for solving DC power flow

Re: load2disp command

2017-07-17 Thread Ray Zimmerman
Did you check the help for the function (e.g. load2disp in the online function reference)? idx is simply a vector of bus indexes, in your case it should be simply be equal to 2 (a 1 x 1 vector). Ray > On Jul

Re: Get_losses

2017-07-17 Thread Ray Zimmerman
Actually, dloss_dV includes partials with respect to both voltage angle and voltage magnitude. But, yes, always check the help for the function in question by typing, for example, help get_losses, or by checking the online function reference Shri mentioned. Ray > On Jul 15, 2017, at

Re: How to change objective function of DC opf

2017-07-17 Thread Ray Zimmerman
If you want to use social welfare as the objective function, simply convert all loads to dispatchable loads. In that case, cost minimization, which now includes minimizing the negative costs (i.e. positive benefits) of the loads is actually minimizing the negative of the social welfare (or

Re: Objective Functions

2017-07-17 Thread Ray Zimmerman
There is support for user-defined costs of the form described in section 6.3.1 of the User’s Manual , but this does not include arbitrary non-linear cost functions. The intention is to include that in an upcoming version.

Re: DC Power Flow

2017-07-17 Thread Saeed Ahmed
Respected Jose Luis Marín Thanks for you guidance. I will try to be more precise and specific here. Regards Saeed Ahmed PhD Student University of Ulsan, Republic of Korea On 17 July 2017 at 22:30, Jose Luis Marín wrote: > I don't mean to be disrespectful, but you should

DC Stated Estimation for calculation of Active Power Flow

2017-07-17 Thread Saeed Ahmed
Hi every one I need help for solving DC power flow using WLS function. I have tried following and need guidance for developing it further. cd = loadcase('case4gs'); casesystem = size(cd.bus, 1);

Re: leave

2017-07-17 Thread Akash Tyagi
Ok. Thanks very much for clearing the confusion. On Mon, Jul 17, 2017 at 7:01 PM, Bone, Gorazd wrote: > Please allow me to clear up what is happening in my opinion. > > Manish Thapa is trying to leave the mailing list. This is unrelated to > you, Akash. > > Regards >

RE: leave

2017-07-17 Thread Bone, Gorazd
Please allow me to clear up what is happening in my opinion. Manish Thapa is trying to leave the mailing list. This is unrelated to you, Akash. Regards Od: bounce-121661287-78499...@list.cornell.edu [bounce-121661287-78499...@list.cornell.edu] v imenu Akash

Re: DC Power Flow

2017-07-17 Thread Jose Luis Marín
I don't mean to be disrespectful, but you should probably read this first: http://www.catb.org/esr/faqs/smart-questions.html Your question is way too broad and vague. -- Jose L. Marin Grupo AIA 2017-07-17 15:21 GMT+02:00 Saeed Ahmed : > I need to perform DC

DC Power Flow

2017-07-17 Thread Saeed Ahmed
I need to perform DC State Estimation and calculate the Real Power Flow in the lines. Need help please. Regards Saeed Ahmed

Re: leave

2017-07-17 Thread Akash Tyagi
Why would I leave this list? On Mon, Jul 17, 2017 at 6:03 PM, André Carvalho da Silva < andre.c.si...@inesctec.pt> wrote: > If you want to leave the list, just go to this page: > http://www.pserc.cornell.edu/matpower/mailinglists.html#discusslist and > type your email account under the ‘Leaving

RE: leave

2017-07-17 Thread André Carvalho da Silva
If you want to leave the list, just go to this page: http://www.pserc.cornell.edu/matpower/mailinglists.html#discusslist and type your email account under the ‘Leaving MATPOWER-L’ topic. Then hit the “unsubscribe” button.

Re: leave

2017-07-17 Thread Akash Tyagi
Why? On Mon, Jul 17, 2017 at 5:58 PM, Manish Thapa wrote: > matpower discussion forum > > On Mon, Jul 17, 2017 at 1:40 PM, Akash Tyagi > wrote: > >> Leave what? >> >> On Mon, Jul 17, 2017 at 4:48 PM, Manish Thapa

Re: leave

2017-07-17 Thread Manish Thapa
matpower discussion forum On Mon, Jul 17, 2017 at 1:40 PM, Akash Tyagi wrote: > Leave what? > > On Mon, Jul 17, 2017 at 4:48 PM, Manish Thapa > wrote: > >> leave >> > >

Re: leave

2017-07-17 Thread Akash Tyagi
Leave what? On Mon, Jul 17, 2017 at 4:48 PM, Manish Thapa wrote: > leave >

leave

2017-07-17 Thread Manish Thapa
leave