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- Key Eskom witnesses fail to appear at Koko’s disciplinary hearing
  by Chris Yelland, investigative editor, EE Publishers
  After some initial delays, the disciplinary hearing of suspended head of generation and former acting CEO at Eskom, Mr. Matshela Koko, got off to a rocky start at about 17h00 on Wednesday 18 October 2017 in the Franklin Auditorium at Eskom Megawatt Park, Johannesburg. The disciplinary hearing relates to widely reported allegations of nepotism and […]
LEAD EDITORIAL: more >>
- Contactless technology measures voltage and current
  Information from Fluke, Comtest
  For many years, electricians and technicians looking for a quick current reading have reached for the trusted Fluke T5 Electrical Tester, a personal everyday tool seen in tool belts the world over. Now Fluke’s new T6 with FieldSense technology, improves the open-fork functionality by allowing for AC current, ac voltage and frequency measurements to be […]
FRONT COVER STORY: more >>
- Accelerate grid modernisation with smart RMUs
  Information from Schneider Electric
  With electricity generation growing more decentralised by the day, network management is becoming increasingly complex. Operators need to ensure safe, reliable energy at optimal costs while tackling the grid-evolution challenge. Schneider Electric offers future-ready grid management solutions, bringing innovation to every level of your business. Whether your electrical distribution network runs overhead or underground, Schneider […]
INDUSTRY NEWS: more >>
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COMPANY & PRODUCT NEWS: more >>

VIEWS & OPINION: more >>
GENERATION: more >>
- Proper generator set sizing requires analysis of parameters and loads
  by Jim Iverson, Cummins
  While most sizing exercises are best done with sizing programs or with the help of a manufacturer’s representative, it is still important to understand the factors which affect the operation of a generator set so one can be confident of the right equipment for the application. The first step in sizing and selecting a generator […]
- How nuclear can support green applications for a sustainable SA
  by Joe-Nimique Cilliers, North West University; Dr. Anthonie Cilliers (Pr.Eng), South African Network for Nuclear Education, Science and Technology (SAN-NEST); and Prof. Jannie Neethling, Nelson Mandela University.
  We often hear about next generation nuclear power plants under development and construction worldwide. These nuclear power plants are designed from the ground up utilising different philosophies and more importantly, different objectives than conventional light water reactors widely in operation today. Fig. 1 illustrates how nuclear power plant designs have evolved since the late 1940s up […]
- Synchronous alternator protection principles and systems
  by Mike Rycroft, features editor, EE Publishers
  Protection of synchronous generators involves the consideration of faults and harmful abnormal operating conditions, more so than the protection of other power system elements. The range of abnormal conditions and faults that can occur is extensive, and many could result in serious damage to the alternator and associated plant. In a properly protected generator, automatic […]
TRANSMISSION & DISTRIBUTION: more>>
- Lightning and surge protection for rooftop PV systems
  Information from Dehn+Söhne
  Since self-generated electricity is generally cheaper and provides a high degree of electrical independence from the grid, PV systems will become an integral part of electrical installations in the future. However, these systems need to be protected from harsh weather conditions if they are to remain useful for their full lifespan. Lightning discharges cause field-based […]
- Earth ground resistance measurement: Fall of potential method
  by Roman Domanski and Michael Daish, Sonel
  The most common method of earth ground resistance measurement is the “fall of potential method”. To measure grounding accurately, it is crucial to follow a rigorous procedure. It can be a time-consuming task that depends on the arrangement of the grounding system, the terrain, and other factors. Taking shortcuts may result in errors. This article […]
- Supraharmonics in transmission and distribution networks
  by Mike Rycroft, features editor, EE Publishers
  Standards for harmonics in power networks (transmission and distribution) usually deal with the range below 2 kHz, as most of the harmonics due to waveform distortion fall into this range. Harmonics or disturbances in the range above 2 kHz are becoming noticeable in networks due to the introduction of inverter based distributed generators, and are […]
APPLICATION: more >>
- Power usage effectiveness in data centre management
  Information from ABB
  Power usage effectiveness (PUE) is growing in popularity as an efficiency metric by the data centre market. While PUE is a tool to deploy an approach, or develop an implementation within a data centre, the measurement of PUE and its accuracy could have an increasingly negative impact. Where the energy manager of a data centre […]
- Battery electric vehicles are changing the face of mining
  By Mike Rycroft, features editor, EE Publishers
  Most people are aware of the increasing use of energy storage in hybrid systems for remote, and not so remote mines. But storage has other applications in mining, which started long before mine power systems. Health and cost savings considerations are driving an increasing move towards electric battery-driven vehicles and machinery in underground and opencast […]
- Alternator life extension and upgrades to meet flexible operating requirements
  by Mike Rycroft, EE Publishers
  Life extension seems to be a common practice today in generating plant. Changes in the operating mode however requires more than a simple replacement of worn parts. In addition to fundamental repairs of failed parts, life extension can involve repurposing the alternator by upgrading components and monitoring. Extension of life of rotating machinery has to […]
SUSTAINABLE ENERGY: more >>
- Assessing the first year performance of a 500 kW PV plant
  By Jaco Bergh, Brand Engineering SA
  The 500 kW photovoltaic (PV) plant discussed in this article operates in the Northern Cape and has been in operation for over a year. The aim of this assessment is to provide a simplistic approach to determine the performance which can typically be achieved by a PV plant after a certain period of operation. The […]
- Small scale solar PV: Current status and future prospects
  by Mike Rycroft: Features editor
  Privately owned small-scale photovoltaic (PV) plants meant primarily for own generation, are becoming more and more popular and being installed at an increasing rate in this country. The industry suffers both from a lack of quality control and a lack of applicable standards and legislation. The problems are being addressed by both the industry and […]
- Energy storage: The next game changer
  Information from EEnergy Informer
  The rise of variable renewable generation is driving demand for storage. A recent article in The Economist “Electrifying everything”, was devoted to batteries with projections of massive investments and rapidly falling costs. Even more telling, however, was a sold-out energy storage conference recently organised in San Diego. As described in an article in San Diego […]

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