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G.2 Simulink Library
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components), while PSAT is Matlab-based and aimed to power flow, optimal
power flow, continuation power flow and electromechanical transients.
A very rough comparison of the two software packages is depicted in Table 1.1 of
Chapter 1. However, comparing the two software packages is not fair, because they
have different goals and use different mathematical models. Maybe it could be interesting comparing power flow results obtained with PSAT and SimPowerSystems,
which I think is the only comparable result.
Performances of both toolboxes are typically pretty good for “small” systems,
while slow down for “huge” ones. This actually depends on Matlab features more
than on the implemented code. Of course “small” and “huge” depend on the
computer. However, SimPowerSystems has a longer hystory and has been written
by a team of people. Thus, SimPowerSystems should be generally more reliable
than PSAT.
However, PSAT is free software (well, free but for the Matlab kernel :)),
while SimPowerSystems is a commercial product. Any comments, suggestions and
contribution are really welcome and will be taken into account in order to make
PSAT a better software and a more reliable and useful tool. I guess this is actually
the main advantage of PSAT.
How can I run PSAT from within a function without using GUIs?
Since PSAT version 1.3.0, PSAT includes a set of functions and script files which
allow avoiding GUIs. Please refer to Chapter 27 for a detailed documentation about
the command line usage of PSAT.
Can I run PSAT on Octave?
As for version 1.3.0, PSAT can run on GNU Octave. Restrictions and limitations
apply; see Chapter 28.
G.2
Simulink Library
How can I inspect schemes of PSAT-Simulink blocks?
PSAT-Simulink blocks are hollow, and works just as data boxes. As a matter of
fact running a simulation from the Simulink toolbar produces no effects. Static
and dynamic models of components are stored in the Matlab functions provided
with the PSAT tarball.
I added a control scheme to a PSAT-Simulink model, but it doesn’t
work.
PSAT makes use of Simulink only as a CAD tool, whereas mathematical models
are defined in Matlab functions. If you want to add a new component or a new
control scheme refer to Chapter 25 which describes how to build user defined models
under PSAT.