Abstract:
In this paper the impact brought by different
demand sector profiles on the daily operational cost and optimal
scheduling of grid connected photovoltaic system with
bidirectional power flow is analysed for the specific case of
Bloemfontein in South Africa. For this purpose, residential,
commercial and industrial daily load curves are used to estimate
daily load demands. For comparison purposes, three load
profiles representing the demands from the residential,
commercial and industrial sectors, have been used and
normalized to display the same daily energy consumption level
with different demand patterns. The results of the simulations,
obtained using Matlab 2016, have revealed that for the same
energy consumption and renewable resources, the running
expenses of any proposed scheme are mainly dependent on the
demand sector. Consequently, it can be recommended that in
Bloemfontein and South Africa in general more focus should be
on implementing grid-connected renewable hybrid energy with
storage system in the commercial and industrial sectors instead
of in the residential sector.
