This paper investigates the network topology for
distributing electricity in the remote village using solar PV
with DC microgrid. The expansion of the national grid
electricity into rural villages remains a challenge due to the
increased costs of distribution and transmission systems.
The optimum selection of the network topology is
important, relative to the density of the population, village
size, and the group arrangement of a particular village.
The modified Newton–Raphson’s algorithm (N-R) has
been programmed in MATLAB to evaluate the voltage
drop and system efficiency, obtained with different types
of the distribution system and the nominal voltages to be
used. In this paper, the methodology to decide the best
distribution topology, nominal operating voltage level, and
the conductor size (based on voltage drop and total cost)
was addressed for a specific remote village in Rwanda.