Hi Ray, The part of the code that is spefic to the 30-bus system seems to be valid to 14-bus also cause it also have the reference bus on bus 1 and also the branch 1 and 2 are the only two connected to bus 1. So that doesn´t cause any problem.
But the point of this mail now is: where do you do the correction of the generation constraints (in which file) of the opf ? Cause I hopping that with a copy-paste it will solve the problem no (it may request some adjustments obviously)? Thanks again and wishes of a nice weekend Pedro ----- Original Message ---- From: Ray Zimmerman <[email protected]> Sent: Wednesday, April 30, 2008 9:20:54 PM Subject: Re: State Estimation Hi Pedro, First, you should know that the state estimation code is essentially proof-of-concept code which is included in case it could be helpful to someone. It is very basic and not very thoroughly tested. In any case, I'm pretty sure that it does not even take into consideration any of the generator limits and if I remember some of the code (in state_est.m) is specific to the 30-bus system. Ray On Apr 30, 2008, at 1:23 PM, Pedro Landolt wrote: Good afternoon, I´m having the following problems: 1st - on the case 14, I changed the limit (PMax) on the generation bus 2 on the gen matrix to 75 MW. When I solve the state estimation problem (runse('case14')) this limit is not always meet and in some simulations I got more than 100MW. Near 75 would be acceptable cause state estimation isn´t exact so it may have a little more than 75MW, but 100MW is 33% more than the limit. I also changed the initial state to the flat start (it seems to get more often results closer to the limit). 2nd - I notice is that the final results in some generators (only on the ones on the buses 3, 6 and 8) the active power (P) goes bellow 0, and also in some loads (normally on bus 7). This should mean that the generators were acting as a load and the load as a generator. This issue I checked in the program without any changes and it also happened. Thanks for the help and best wishes to all, Pedro Landolt ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ
