On Aug 28, 2009, at 6:03 AM, Fortunato V wrote:
Dear all,
I am going to use MATPOWER to run simple state estimations and to
postprocess the covariance matrices at the end of the process.
I have the following questions:
1.The extra/runse is tagget as "unfinished", what does it mean? Is it
not working?
This was code contributed by a user. If I recall correctly, it was
used to demonstrate a basic state estimation algorithm, so the code
was designed to work only with a single system and a hard-coded set of
measurement data. The interface and documentation to turn it into a
generally useful state estimation tool was never completed. Another
user has since contributed additional state estimation code that I am
planning to include as unsupported "extras" in the next version of
MATPOWER, since it too has not yet received the attention necessary to
full integrate it into MATPOWER.
2. How do I use compare for two load flows? I need to "solve" a load
flow per time and to "save this data", how do I save it?
Second question first ... the 4th argument to runpf() or runopf() is
the filename that you would like to use to save the solved case, so
you can simply add that argument to your call to runpf(). So to save
the results of two optimal power flow cases and then compare them, you
would do something like the following:
opt = mpoption;
runopf('case1', opt, [], 'soln1');
runopf('case2', opt, [], 'soln2');
compare('soln1', 'soln2');
It should print a summary of the differences between the two
solutions. Unfortunately, I see that compare() only works with OPF
runs, not simple power flows. I'll put that on my list of things to fix.
3. Is there a coverter between a standard format (e.g. UCTE, PSSE,
EUROSTAG) and MATPOWER case format?
There is a converter from IEEE common data format called cdf2matp.m.
--
Ray Zimmerman
Senior Research Associate
211 Warren Hall, Cornell University, Ithaca, NY 14853
phone: (607) 255-9645
