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An adaptive sampling-interval generator for digital relaying

1989; Institute of Electrical and Electronics Engineers; Volume: 4; Issue: 3 Linguagem: Inglês

10.1109/61.32649

1937-4208

G. Benmouyal,

Semiconductor Lasers and Optical Devices

A method for measuring frequency at a fixed sampling rate is described, and a variable-rate method is introduced. An algorithm based on a digital Fourier transform, which locks the sampling frequency in a microprocessor-based system to the fundamental of an incoming voltage waveform, is devised. The algorithm also intrinsically provides a measurement of the frequency. The algorithm is applied to the case of a volt/hertz relay. >