Eskom’s energy and revenue loss management

  Energy losses continue to be a challenge for utilities globally, both in developed and developing economies. As a result of increasing production costs in the value chain, utilities have to manage these losses at acceptable levels. In South Africa the problem is exacerbated by Eskom’s generation capacity challenges. Losses incurred in electrical power systems […]

Magnetically controlled shunt reactors – a new type of FACTS device

  The need for more efficient electricity systems management has given rise to innovative technologies in power generation and transmission. Worldwide transmission systems are undergoing continuous changes and restructuring. They are becoming more heavily loaded and are being operated in ways not initially forecasted. Transmission systems must be flexible to react to more diverse generation […]

Secure, interoperable functionality for power line carrier based infrastructures

  Power line carrier (PLC) based systems are proving an attractive and cost-effective solution for smart metering deployments in the residential domain. In Europe, PLC solutions have already been implemented widely in some countries, while others are at an advanced stage of planning for large-scale roll-out. The installed base in Spain (based on Prime Alliance […]

Not-so-smart metering: A consumer’s point of view

  Some municipalities have started installing smart meters at residential customer’s premises, and customers are about to enter a new era in electricity distribution. Smart metering, we have been told, not only allows the electricity utility to read the meter remotely, but can allow customers to monitor and control energy consumption and keep their own […]

Avoiding a substation explosion

  An authorised person closed an 11 kV oil circuit breaker (OCB) on to a fault at a main substation. The OCB exploded and the force of the blast blew off the substation doors, seriously damaging the building. The person broke his right arm, when the door behind which he was standing was blown open. […]

Protecting IEDs with deviation of power frequency

  The deviation of power frequency component (DPFC) is a fundamental principle employed in many protection IEDs. This principle is based on the concept of superposition, where the pre-fault load current and voltage can be subtracted from the whole fault current and voltage to obtain the pure fault components. Download the PDF