In the second part of the study, other alternative way of an
electricity production which is the extension of the transmission
grid line is considered. The mathematical cost formulation of the
transmission grid line is obtained as Eq. (13). And then, break-even
analysis is done as seen in Fig. 11. As a result, the break-even point
is obtained as 4817 m. It defines that after this distance using a hybrid
system is more economic than the grid line system. However,
since the cost difference between the two system is low, 15.66%,
and the hybrid energy system is renewable and environment
friendly, this system still can be used for energy supplier of the
GSM base station.
The methodology described in this study provides an important
and systematic approach for design, analysis of hybrid energy systems
and choosing the best energy system for the remote areas.
The optimization ability is especially helpful if the simulation of
a system is very large and costly, precluding exploration of all
but a few input-parameter combinations. The development of the
metamodel makes possible, so better understanding of the true
relationship between input variables such as the PV size, wind turbine
rotor swept area, and battery capacity, and output variables