Thank you sir
On Thu, Sep 5, 2013 at 7:20 PM, Shri <[email protected]> wrote: > > On Sep 5, 2013, at 1:23 AM, dharmesh dabhi wrote: > > Hello sir, > IN my project i want to find out ATC by using CPF > (continuation power flow) method algorithm in IEEE 14 bus system using PSAT > Matlab toolbox.so i have question that Is it possible to code CPF mehod in > PSAT for finding out ATC.IF yes then HOW? > > > You need to ask this question on the PSAT discussion forum > http://groups.yahoo.com/neo/groups/psatforum/info > > IF not then WHICH are the other option ? > > > Sincerly, > Dharmesh > dabhi > > > > THANK YOU SIR > > > On Thu, Sep 5, 2013 at 11:51 AM, dharmesh dabhi < > [email protected]> wrote: > >> Hello sir, >> IN my project i want to find out ATC by using CPF >> (continuation power flow) method algorithm in IEEE 14 bus system using PSAT >> Matlab toolbox.so i have question that Is it possible to code CPF mehod in >> PSAT for finding out ATC.IF yes then HOW? IF not then WHICH are the other >> option ? >> >> >> On Thu, Sep 5, 2013 at 10:11 AM, Shri <[email protected]> wrote: >> >>> >>> On Sep 4, 2013, at 12:44 PM, dharmesh dabhi wrote: >>> >>> HELLO, >>> I have two questions >>> .Q:1 How Continuous power flow (CPF) different from Newton raphson( >>> N.R) ? >>> >>> AC power flow solution is carried out with a Newton-Rhapson method for a >>> fixed generation/loading profile. Continuation power flow consists of a >>> series of AC power flows where the loading/generation is >>> increased/decreased at each step. Instead of simply increasing/decreasing >>> the loading/generation and solving repeated power flows, an extra equation >>> is appended to the original power flow equations in a continuation power >>> flow. This extra equation describes how the current step is related to its >>> previous one. This is done so because at near loading limit, the Jacobian >>> matrix becomes ill-conditioned and a simple power flow may diverge. The >>> extra equation helps in eliminating this ill-conditioning issue. You may >>> want to refer this classical paper on continuation power flow by Ajjarapu >>> and Christy >>> http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=141737&url=http%3A%2F%2Fieeexplore.ieee.org%2Fiel1%2F59%2F3807%2F00141737 >>> >>> >>> Q:2 What are the problem facing in N.R Method for large number of >>> population size during calculation of 'ATC' ? >>> >>> I am assuming here by large population size you mean large number of >>> variables. >>> >>> The biggest bottleneck is factoring the Jacobian matrix repeatedly. This >>> paper might be of interest to you >>> http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=736300&url=http%3A%2F%2Fieeexplore.ieee.org%2Fiel4%2F59%2F15860%2F00736300 >>> >>> What is the problem that you are trying to solve? How big is your system? >>> >>> Shri >>> >>> >>> Sincerly, >>> Dharmesh dabhi >>> >>> >>> >> > >
