Medupi magic fails Eskom and South Africa – the stuff of nightmares

. Following major problems that brought Eskom’s Medupi power station to its knees during the height of the load shedding last week, Medupi’s power station manager, Rudi van der Wal, is leaving Eskom to take up a position overseas. Van der Wal had resigned before the mess started, and was due to leave in about […]

Case study: Largest wind farm in Africa

The Lake Turkana Wind Power (LTWP) project, located in Marsabit County, Kenya, is the country’s single largest private sector investment at €685-million; and the largest renewable energy project ever undertaken in the country. With 365 turbines spread over 40 000 acres and a maximum installed capacity of 310,25 MW, the wind farm is also the […]

Measuring high currents with small current sensors

Modern current measurement trends in uninterruptible power supplies (UPS) and renewable energy systems is towards smaller physical size, higher current ranges, faster response times and lower cost. The simplicity of open-loop sensors makes them an attractive solution for attaining these objectives. This article discusses three new families of sensors which allow the nominal current to […]