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Southern African countries to this day remain one of the regions with the lowest electricity access rates, particularly in rural areas. The main reason for the low rate of services is the distance between these communities and the electricity grid. In many cases extension of the grid to rural communities is difficult due to high costs. Off-grid power systems are self-sufficient electrical networks,...
Electrification of rural households is of key importance for Africa's economic growth, particularly for developing countries such as Botswana. This paper carries out a techno-economic feasibility study of a solar biomass hybrid system with and without energy storage to supply load demand. The case studies were performed using HOMER software, choosing Phakalane, a village of Botswana as a location...
With fast expansion of capacity in electric power systems in recent years, there is a growing need to deliver power to customers at acceptable voltage and frequency limits. Under different contingencies the stability of the system need to be reassessed and controlled. This can better be done in real time. This paper presents a review on real and off-line stability assessment of power system using...
The paper investigates the impact of penetration of Distributed Generation (DG) on the reliability of a radial distribution network. The authors evaluate the reliability of a portion of RBTS (Roy Billinton Test System) network with and without DG connection at different load points. Reliability assessment is performed using the analytical and Monte Carlo simulation techniques and enhancement of reliability...
The growing need for competition in the utility and energy markets and South African government's policy on the inclusion of Distributed Generation otherwise known as Embedded generation (EG)s in the future generation mix in South Africa will potentially mean that the numbers of generators being connected within the utility distribution networks will increase significantly. In March, 2009, the National...
Recently hybrid power systems (HPSs) consisting of integrated operation of two or more different types of energy sources and storage devices are being deployed for rural electrification or electrification of remote areas in many countries across the world. This is seen as a cost effective solution in contrast to extending the utility grid in remote areas. The types of upcoming renewable and low-carbon...
Over last two decades the risk and reality of environmental degradation have become more apparent with increasing economic development and population growth. Solving the current environmental problems, while addressing issues related to electricity generation and solid wastes problems, requires long-term potential actions for sustainable development. In this regard, renewable energy resources are...
This paper presents the analysis of cost-effective dispatching of emergency reserves with a specific focus on supply and demand side options. On the demand side options the focus is the demand market participation product. On the supply side options the use of open cycle gas turbines is studied. In capacity constraint systems the supplying demand with the current generation mix needs to be met. With...
This paper reports on an overview of the current electricity situation in Namibia that renders it necessary for capacity expansion of electricity generation in order to meet the country's abounding electricity needs. A discussion of the efforts made by the Namibian national power utility, NamPower and the country's government will be presented in the paper, followed by an abbreviated review of on-going...
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