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Plugging the leaks
by Mike Rycroft, editor
 Carbon taxes and levies have the effect of increasing the price of energy in the countries where they are introduced, and this is causing migration of manufacturers to countries with less stringent emission control laws. This "carbon leakage" is becoming a major concern, and countries are introducing a host of mitigation measures to plug this "leakage"... ( more)
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Interview with Andre Merlin: President of Cigréby Mike Rycroft, editor
 The Cigré Steering committee held its 2012 meeting from 24 to 27 April at the Thandeka lodge in the Waterberg. The meeting included an Africa day on 26 April, where South African companies, Powertech Transformers, Pfisterer, and Eskom gave presentations on the work done by their companies to the committee... ( more) |
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First Cigré supported Radmaste graduation
Information from Cigré
The first graduation of short course Radmaste mathematics and science matric teachers took place at the end of last year. The program comprises full year part-time study which ends in an examination and the award of a certificate of competency by the University of the Witwatersrand... ( more) |
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The Jacob Marley column: Land of the setting sun
Sir, Not long ago solar energy was riding high. A new dawn had broken and the sun stood high in the blue skies everywhere from Africa to Arizona. Rooftops were being occupied from Germany to Germiston. Before one knew it, people were talking and tweeting renewable, REFIT and REIPPP and a host of other acronyms as if they were second nature... ( more) |
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Brazil steel-making complex raises the bar for CCPPs utilising waste gases
Information from Alstom
Blast furnace gas from a new steel-making plant in Brazil will be firing a combined cycle power plant (CCPP) when production begins at the facility, located in Rio de Janeiro's industrial district of Santa Cruz. High efficiency and flexibility of operation were key considerations in opting for the Alstom power plant solution... (more)
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Ammonia - a fuel for the future? Part 1
by C M Meyer
Conventional cars can already make use of ammonia - they can run on a mixture of that is 90% gasoline and 10% ammonia. So-called flexible-fuel vehicles, which use a mixture of gasoline and ethanol, could also be modified to run on a fuel up to 85% ammonia... ( more)
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Improvements in transformer protection and control: Part 1
by Armando Guzmán, Normann Fischer and Casper Labuschagne, Schweitzer Engineering Laboratories
This paper describes protection elements that detect transformer faults quickly and avoid unnecessary transformer disconnections. The paper introduces a differential element that combines the security and dependability of harmonic restraint with the speed of harmonic blocking to optimise relay performance... ( more)
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Medium voltage fixed electrical installations: SANS 10142 - Part 2
by Jaco van Heerden, TWP Projects
The use and application of the Wiring Code SANS 10142-1 is well known to all of us, and covers fixed electrical installations of up to 1000 V AC and 1500 V DC. A new Part 2 of SANS 10142 has now been developed for voltages of up to 22 kV and power up to 3000 kW... ( more) |
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Protection relay for capacitor banks
Information from Strike Technologies
The RLC04 is a numeric, digital signal processor based, protection relay designed specifically to combine all functions required for comprehensive protection of medium and high voltage capacitor banks and filter installations... ( more) |
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The case for smart metering in Africa
Information from Aurecon
Smart metering is an important tool in the management and improvement of energy efficiency. New technologies have been introduced to address energy (electricity, gas and heat) shortages, meter reading problems, revenue protection processes, customer service improvement and other business-related issues... (more)
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A practical consideration of transmission line engineering
by Dr. Ing W Bückner, Cigré
Design projects for new generating plants, in particular new nuclear generating stations, are making the construction of new transmission lines urgently necessary Attention is thus being drawn to the current state of electrical transmission line technology in the world... (more)
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Powerline survey made easy with laser scanning
Information from Maptek
Laser scanners were deployed to locate conductors on powerlines to test the suitability of the method for sag profiling. The scanner was set up in several locations to help determine the optimum scanning positions, the attainable range of the conductor from the scanner, and the time required to conduct such a survey... (more)
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Industrial and utility network design and configuration
Information from H3i Squared
In recent years Ethernet has rapidly expanded as the communications technology of choice the world over, whether for home or office use. Due to this, Ethernet is constantly evolving and adding new, improved functionality, which is made possible by the open, worldwide standards around which Ethernet is based... (more)
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Creating a sector innovation system
by P Maruping, Technology Innovation Agency
This article motivates the need to build a culture of technology innovation in South Africa as a means of developing and commercialising technology-based services, processes and products to combat climate change and reduce our reliance on fossil fuels... (more)
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Traction motor makers race to escape rare earths
by Dr. Peter Harrop, IDTechEx
In 2022, over 128-million electric vehicles will be made, mainly two wheelers, according to the IDTechEx report "Electric Vehicles 2012 - 2022". That means and estimated business of over $260-billion dollars, even at ex-factory prices, with cars being under 50% of that figure... (more)
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Boiler cleaning
Information from Clyde Bergemann Africa
A boiler is a closed vessel used to convert energy into steam. The energy is derived from the combustion of fuel. Multi-fuel boilers are boilers that are able to burn any combination of fuels. Multi-fuel boilers in the sugar industry burn coal and bagasse, the dry pulpy residue left after the extraction of juice from sugar cane... ( more)
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Why own when you can lease? Not cars but rooftop PVs!
Information from EEnergy Informer
A new business model promises to make solar PVs affordable, from day one. At currently low module prices, more consumers are finding that they can afford solar energy after all - by leasing rather than owning the rooftop panels... (more)
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Massive wind turbine blade - a first for SA
Information from I-WEC
Isivunguvungu Wind Energy Converter (I-WEC) has finished their first massive 50 m wind turbine rotor blade - a ground-breaking first for South Africa and Africa. The blade was manufactured at I-WEC's Table Bay harbour workshop. Each rotor blade weighs about 12 t, and the whole turbine is expected to weigh about 200 t... (more)
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