Electromagnetic transients have a major impact on all aspects of high voltage equipment in electrical power systems, and abnormal transient voltages and currents must be carefully considered in winding insulation design, circuit switching, and lightning protection in order to improve network reliability. Electrical engineers here explain the basic theories, modeling, and applications. Their topics include frequency characteristics of transformer windings, ferro-resonance in power and instrument transformers, the computer modeling of rotating machines, transformer insulation design based on the analysis of impulse voltage distribution, and using ultrahigh frequency techniques to detect and locate partial discharges in transformers.
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