Uninterrupted power supply by integration of renewable energies, storage systems and smart energy management system in Kumasi-Ghana

M. Steglich and Johanna M.A. Myrzik



Ghana currently has an unstable electrical power supply and load shedding is often used to ensure the stability of the grid. In this paper, a sustainable backup system with a smart energy management system to ensure a stable and uninterrupted power supply is presented. The system consists of two stand-alone inverters that connect two battery systems serving as energy storage units together with power generation from renewable energy sources i.e. photovoltaic systems and a biofuel generator. To achieve a continuous power supply of important loads in case of a power failure, a smart load management system has been developed and implemented. The load management system consists of load relays which are connected to one central control unit as well as to the loads in two buildings. The central control unit is also used to visualize all energy measurement data by using installed energy meters. The system is able to make important consumers energy self-sufficient and to supply them at least during 1.5 h in case of a grid failure.

Published in: Renewable Energy & Power Quality Journal (RE&PQJ, Nº. 16)
Pages: 336-339 Date of Publication: 2018/04/20
ISSN: 2172-038X Date of Current Version:2018/03/23
REF: 306-18 Issue Date: April 2018
DOI:10.24084/repqj16.306 Publisher: EA4EPQ

Authors and affiliations

M. Steglich and Johanna M.A. Myrzik
Institute of Energy Systems, Energy Efficiency and Energy Economics. TU Dortmund University. Dortmund (Germany)

Key words

Micro grids, smart grids, uninterrupted power supply, load shedding, renewable energy


[1] Electricity Company of Ghana LTD, [online] http://www.ecgonline.info/index.php/customer-care/outage-center/view-outages.html [25.10.17]
[2] SMA, [online] https://www.sma.de/en/products/battery-inverters/sunny-island-60h-80h.html [25.10.17]
[3] SAIA Burgess Control, [online] https://www.sbc-support.com/en/product-category/programmable-controller/pcd1-cpus-in-flat-design/pcd1m2160/ [25.10.17]
[4] Hassan Farhangi, “The path of the smart grid”, in Proc. 2009 IEEE Power & Energie Society, pp. 19-22