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Power system harmonics part 2
Harmonic monitoring involves the capturing and processing of voltage and current signals at various points of the power system. The signals to be captured are normally of high voltage and current levels, and thus require large transformation ratios before they can be processed by the instruments.
As an introduction to the subject, a summery of the harmonic measurement requirements specified by the IEC are considered first. This is followed by an assessment of the characteristics of conventional and special types of current and voltage transformers for use in harmonic measurement.
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