Sizing and dynamic modelling and simulation of a standalone PV based DC microgrid with battery storage system for a remote community in Nigeria

Year 2019, Volume: 3 Issue: 2, 67 - 85, 30.06.2019

Cherechi Ndukwe , Tarıq Iqbal

https://doi.org/10.30521/jes.544710

Cited By: 6

Abstract

In this paper, a solar PV powered DC microgrid is proposed and designed
for Umuokpo Amumara in Nigeria with 800 households and a number of community
installations which include churches, schools, shops, and a water pumping
system. The appropriate sizes of system components are determined to meet the
all-time load demand. A Techno-economic feasibility study was carried out in
Homer Pro to determine the energy needs of the community and as well the system size and configuration that best suits the
community. The energy requirement of the community was obtained to be 3.16MWh/day.
The battery storage system was also sized in this work and a battery system
capacity of 21,944Ah was able to meet the community energy requirement for up
to a day without renewable energy supply. The dynamic model of proposed the
microgrid was simulated in MATLAB/SIMULINK to observe the system’s dynamic
response in view of the power quality, load impact, and battery storage
charging. The results obtained from the simulation depicted a stand-alone DC
microgrid that is capable of meeting the daily electrical energy requirements
of the system with good voltage stability. The PV system used in the system
could function at maximum power conditions even with variation in the weather
conditions. This was achieved by employing the Incremental Conductance MPPT
system.

Keywords

DC microgrid, Homer Pro, Dynamic Modelling and Simulation, Solar PV, Renewable energy

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