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
>
>
>
