Posts tagged as electricity

Supraharmonics in transmission and distribution networks

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 […]

Dealing with inrush currents in distribution transformers

Among the subtleties associated with distribution switchgear configuration, inrush current is a necessary evil which must be taken into consideration. It is the source of much frustration for field operators and SCADA control teams; when issuing a close command on an open breaker results in an immediate trip. Was it genuine fault? Is it risky […]

A “just” transition to a lower-carbon economy

Despite knowing that both coal mines and coal-fires power stations have a finite life, it speaks to poor planning and the poor implementation of policy in South Africa that nothing has been done to address what comes after or to deal with the need to transition to a lower-carbon economy. Misinformation in statements published by […]

Another South African solar thermal plant completed

  Abengoa has completed Xina Solar One, its third solar thermal plant in South Africa. Xina, a 100 MW plant, uses parabolic trough technology to generate renewable power from the sun. It also features a thermal energy storage system using molten salts which can store sufficient energy for a further 5,5 hours supply, thereby assisting […]

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