Abstract:
The operation planning problem encounters
several uncertainties in terms of the power system’s
parameters such as load, operating reserve and wind power
generation. The modeling of those uncertainties is an
important issue in power system operation. The system
operators can implement different approaches to manage
these uncertainties. These approaches can be categorized
into two main groups; mathematical and physical methods.
In mathematical methods, different approaches can be used
to model the uncertainties of parameters in the formulation
of power system problems. A fuzzy based modeling approach
can be implemented to develop the new formulation of power
system problems under an uncertain environment. On the
other hand, in physical methods, energy storage devices can
be presented to manage the unpredictable behavior of some
parameters of power system. Pumped storage plant is the
main energy storage devices that have extensive attraction in
system operators.
In this paper, the type-2 fuzzy membership function (MF)
is implemented to model the uncertainty of wind power
generation and the type-1 fuzzy MF is used to model the
other parameters in weekly unit commitment (UC) problem.
The proposed approach is applied to two different test
systems which have conventional generating units, wind
farms and pumped storage plants to consider the results of
fuzzy modeling of uncertainties.
