An Advanced Full Cycle DFT Algorithm for Data Synchronization Used in Digital Protective Relaying

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Provided by: Binary Information Press
Topic: Big Data
Format: PDF
In this paper, data synchronization of bay layer device is proposed. Then, an approach based on quadratic interpolation is presented. To identify any disturbances, the fundamental frequency (various harmonic frequencies) component is usually extracted by means of the full-cycle DFT algorithm. But the new sequence of quadratic interpolation may contain oscillatory components with different frequencies as well as decaying DC offset during fault conditions. These nuisance components might eventually affect the performance of quadratic interpolation algorithm implemented in digital protective relays.
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