Hi Dom, I totally believe you have a good reason to change the tap settings in each iteration, but I couldn't get it. 'runpf' command solves a set of power flow equations. The state of the system is instantaneous, not time variant. Tap settings of a transformer is also a static variable. You will set the value as a parameter (not a variable), then you will solve the equations. If you start to change the tap settings in each iteration, most probably, the algorithm will never converge and stop. And there is no physical meaning of changing the tap settings in each iteration. Please correct me if I am wrong.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ *Gokturk Poyrazoglu* Teaching Assistant | Student Assistant Department of Electrical Engineering / The State University of New York at Buffalo 230V Davis Hall, Buffalo, NY 14260 *Phone *: (716) 239 - 8095 *E-mail* : [email protected] On Wed, Jun 4, 2014 at 6:17 AM, Hewes, Dominic <[email protected]> wrote: > Hi, > > > > Regarding the inclusion of auto tap-changers for transformer branches, it > has been recommended in previous posts that the tap setting for each > transformer branch can be updated after each iteration of the > Newton-Raphson procedure. Using the conventional ‘runpf’ command, is it > possible to pause the N-R function after each iteration rather than running > until the solution is found? After each ‘pause’, I would like to calculate > new tap settings and then run the next iteration – but I am not sure if > this ‘pause’ can be implemented with the conventional ‘runpf’command? > > > > Any help/advice would be very much appreciated. > > > > Regards, > > > > Dom > > >
