Posts tagged as generation

Causes and control of electrical machine vibration

  This article examines the causes of electrical machine vibration, the effects of vibration, and means taken to mitigate vibration. All rotating machines, no matter how well designed and manufactured, exhibit vibration of some form when operating. Excessive vibration can cause damage to the machine or reduce its lifetime, as well as damage to other […]

First generating unit at Medupi goes live

  President Jacob Zuma opened Unit 6 of the Medupi Power Station recently. Unit 6 was first synchronised to the national grid on 2 March this year and has been producing electricity to the national grid intermittently whilst undergoing regular optimisation tests. Eskom’s acting chief executive, Brian Molefe, says the commercial operation of Unit 6 […]

Development of a high efficiency and flexible gas turbine

  The development of gas turbines, which Mitsubishi Hitachi Power Systems (MHPS) has continued to pursue, contributes to society in terms of global environmental conservation and a stable energy supply. The company leverages its gas turbine operation experience and takes advantage of its advanced technologies research on “Component technology development for 1700°C class ultra-high-temperature gas […]

Power ships: a real solution to South Africa’s short-term energy needs

  A set of cost-effective privately owned and operated floating power stations, moored at a number of South African harbours, would provide much needed electricity to the country and would remove the need for most of the loadshedding currently being experienced. These floating power stations are known as power ships (Fig. 1).     Having […]

What is the real cost of new build?

  Although new build projects are coming on line this year, attention needs to be given to projects which need to be initiated in the near future, and decisions taken on the mix of new build. One of the issues clouding decisions on this issue is the cost of various options. This article takes a […]