Hi Mr. M. Todorovski, Firstly thank you very much for the answer. I am currently using some MATPOWER cases to perform Studies of optimization in radial distribution systems aiming at Minimizing the number of switches and maximizing the number of consumers After a fault occurs on a given bus or Region of the system. To evaluate the results, I chose the radial cases 16, 84 And 135 of the IEEE. When I evaluated some solutions, I came across With some problems of convergence of the load flow, due to MATPOWER (runpf) use Newton's method and its variants. I noticed that when the number of feeders' buses Increased because of the switching, the probability that the load flow would not Convergence was high.
In my research, I have read many papers that suggest that the Backward/Forward Currents SUM method is used for the load flow For radial distribution systems. I noticed that in February of that year Some MATPOWER functions have been inserted for load flow in radial systems Distribution systems that use exactly the method that is suggested for my studies. I know that new functions inserted in MATPOWER only work for the 6 cases already mentioned. I wonder If there is a possibility of change for the radial cases of 16, 84 and 135 buses of the IEEE. ________________________________ De: [email protected] <[email protected]> em nome de Mirko Todorovski <[email protected]> Enviado: terça-feira, 27 de junho de 2017 21:12 Para: MATPOWER discussion forum Cc: [email protected] Assunto: Re: Command for Radial Test systems That’s correct. In the current form distribution power flow methods solve only radial systems with or without distributed generation at some buses. The 6 cases you mentioned are all radial. If you try to solve other case you will get an error stating that there are loops in the network and it can't be solved. I hope that soon I'll be able to extend the solvers so that they can solve weakly meshed distribution networks. Best regards, Mirko On Tue, 2017-06-27 at 20:39 +0000, Andrey Vieira wrote: > Hi All. I would like to know if the new functions added in MATPOWER > for load flowin radial distribution systems only work for the > following 6 cases: > 1. case4_dist > 2. case18 > 3. case22 > 4. case69 > 5. case85 > 6. case141 > >
