You are currently browsing the tag archive for the ‘Cape Peninsula University of Technology’ tag.

This article presents a short-circuit analysis conducted for the Kromco electrical power system using power system modelling, analysis and simulation software called “DIgSilent PowerFactory”. The main focus is determining the maximum short-circuit currents and fault levels at various locations on the network, and verifying the adequacy of power system components, to see if they can withstand rated prospective short-circuits… (more)

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In the beginning generation was local and supplied local demand. That changed because of technological advancements with improved efficiency and economies of scale. Modern society is highly dependent on the availability of cheap and reliable electricity. A revival of interest in distributed generation implies a full circle in the generation of electricity… (more)

The electric power industry used distributed generation during the initial phase of the electric power industry in the early 20th century. Generation took place near the point of use. With renewables, a new era of clean distributed generation arose. The author poses the question of whether small scale renewable distributed generation systems are feasible with feed in tariffs or net metering in South Africa… (more)

High voltage alternating current (HVAC) has been used for many years as the means of transmitting bulk energy. However, HVAC lines incur increased losses as the distance becomes longer. This research investigates how energy could be transported with minimum losses when an existing HVAC transmission line is converted into a HVDC transmission system… (more)

Access to reliable electricity and its affordability are key indicators of an improved standard of living, but the economics of extending grid electricity to low density rural areas of South Africa restrict such undertakings… (more)

Two case studies show the feasibility of retrofitting LED tubes to replace fluorescent lights in single offices, as well as in suites of offices… (more)

Connecting individual, private, small scale renewable electricity generators as power producers would diversify the risk of relying on a single entity to control the entire power-generation market. However, is it as straightforward as giving private individuals micro-licences for renewable electricity generation to home owners to become power producers and does the grid code cover small scale generators?… (more)

Using a case study in Stellenbosch, this article reports on how geographic information systems (GIS) can be used to bridge the gap between municipalities and informal settlement communities. It presents a methodology that encourages extensive community participation in creating an end product that can be used by technical expertise in the municipality for planning purposes. This work contributes to the body of Public Participation GIS (PPGIS)… (more)

An LED workshop hosted at the recent Industrial and Commercial Use of Energy (ICUE) conference highlighted the urgent need for LED standards and guidelines to ensure that South Africa does not become a dumping ground for substandard equipment… (more)

One legacy of the apartheid era in South Africa is that many informal settlements are situated on marginal and often poorly drained land. In Cape Town, the informal settlements are often characterised by high population growth and poor infrastructure. Consequently, most of these settlements are prone to flooding after prolonged rainfall… (more)

After over a century with utilisation of the benefits of economics of scale, power systems planning and development gets bigger and transmission grids have needed to transmit over longer distances, bringing the concept of onsite or close-to-load generation back. In the last decade, many countries have started the process of liberalisation of the electric systems, opening access to transmission and distribution grids… (more)

The renewable energy industry has experienced a laborious process with many course changes and reversals by government, NERSA and Eskom during the past several years. This paper discusses the relationship of this newly established South African Smart Grid Initiative and the renewable energy bid (REBID) programme… (more)

This paper addresses the concern of the lack of reliability; efficiency; and power losses of many photovoltaic standalone power supply systems caused by the different elements of the power supply system and varied power ratings. There exists a need for load demand matching with generator output, and the possible variability of the load which introduces further inefficiency was considered… (more)

This paper discusses the development of the first GISc diploma at a South African University of Technology. The changes in Surveying education and development of GIS is explored, since it became clear that the interest in the cartography programme became increasingly limited and the obvious solution was to replace it with GISc… (more)

How three-dimentional electronic vision can be used for rotation of a solar panel in the use of incandescent, CFL or LED lighting.The light intensity from solar powered CFL and LED lighting, as well as how the solar panel, battery setup and grid supply are used in a hybrid electrical setup for day and night time lighting are measured… (more)

How the new IEEE 929-200 standard has developed to ensure proper disconnection and restoration of utility interconnected inverters whenever there is a power failure.With dwindling fossil fuel reserves by Dr. Wilfred Fritz, Cape Peninsula University of Technology and pollution as by-products with the consumption of these types of fuels, it has become imperative to develop new carbon credit-friendly distributed electrical systems to increase capacity in the ever-increasing electrical load… (more)

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