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  • Overvoltage Protection Techniques & Equipment

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    by

    John Mulindi
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    Overvoltage Protection – Objective, Methods & Equipment The purpose of the protective equipment in a power system is to isolate the faulty section from the healthy system by initiating tripping for appropriate circuit breakers. This whole process must be carried out with minimum of delay and disturbance. Overvoltage, switching and other phenomena like lightning produce…

  • Surge Suppression in Power Systems

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    by

    John Mulindi
    in

    Causes of Power Surges Transient overvoltages in power systems may arise from a number of sources. Power disturbances resulting from lightning strikes or switching operations on transmission and distribution lines. The switching of power factor correction capacitors for voltage control is the main cause of switching transients. All utility lines are designed to certain basic…