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Microsoft Word 28 pe 09 21 139-143 ibrahimResults and discussion
In this paper, a domestic load used in the proposed
hybrid system. Supposing that the project life is 25 year.
Fig. 10 and Fig. 11 presents the optimization outcomes for
proposed model in both designs on-grid and off-grid
respectively. Optimization progression has been executed
during each achievable choice of variables of this hybrid
system regardless the effect of sensitive variables. Fig. 12
shows the total annually production of proposed model
22,165 kWh/yr with 21,063 kWh/yr consumption in
residential load.
Fig. 10 Screenshot for optimization results at ON-Grid model.
Fig. 5 Screenshot for optimization results at OFF-Grid model.
Table 2. Cost Optimization Analysis for the System.
System
Equipment
Capital
Cost ($)
Replacement
Cost ($)
O&M
Cost ($)
Total
Cost ($)
WT 5000
0
127.83
5,127.83
PV 4325.35
0
884.86
5,210.03
Batteries 400
133.52
51.13 559.81
Converter 1000
0
63.92 1,063.92
Grid 0
0
9,018.69
9,018.69
System 10,725.35
133.52
7,891.40
2,942.62
Fig. 6 Screenshot for Power production & consumption at HOMER
on-grid model
The lowest COE (Cost of Energy) obtained from
HOMER results is 0.0109$, while Duhok residential
electricity is 0.1$\kWh [25]. the renewable energy
contribution was 93%. HOMER's derivative-free algorithm
will determine the optimal contribution ratio between
renewable energy sources to supply the residential load
efficiently with the desired power. As shown in Fig. 11 the
energy cost of an off-grid system (COE 0.301$) is much
higher than the on-grid system (COE 0.0109$). The total
NPC for off-grid and on-grid system are 21,329$ and 2,943
$ respectively.
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