On Apr 25, 2008, at 5:41 AM, [email protected] wrote:
Firstly, about the data of 'Vm' and 'Va' in the 8th and 9th
columns of the
'bus' matrix, I am not sure whether these data are the initiate data
or they
are the final results for the power flow calcultion. I find for some
cases,like
case14, these data are the final results, for some cases,they are
not the
results. I think it does not matter what the initiate data of 'Vm'
and 'Va'
are, as long as they are in the reasonable limits, except for the
swing bus.
Right?
They are both. They are the initial values used, but the solution
results are also stored there. And you are correct that some of the
case files are solved power flow cases, others are not.
Secondly, the numbering in case300 is not regular, which I mean
the bus No.
behind bus 324. So,why number them in this way? not regularly like
with
case9,case14...?
It is better to think of them as bus labels. People use different
conventions for labeling buses and sometimes they are not simply
consecutive numbers. However, these external bus labels are converted
to internal consecutive bus numbers for MATPOWER's computations. The
data for case300 came directly from the IEEE data on the U Wash
website (http://www.ee.washington.edu/research/pstca/).
--
Ray Zimmerman
Senior Research Associate
428-B Phillips Hall, Cornell University, Ithaca, NY 14853
phone: (607) 255-9645
