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Accurate measurement of power system frequency using a digital signal processing technique

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1 Author(s)
Sidhu, T.S. ; Power Syst. Res. Group, Saskatchewan Univ., Saskatoon, Sask., Canada

This paper describes the design, computational aspects, and implementation of a digital signal processing technique for measuring the operating frequency of a power system. The technique provides correct and noise-free estimates for near-nominal, nominal, and off-nominal frequencies in about 25 ms, and it requires modest computations. The proposed technique is implemented using a DSP-based board and has been extensively tested using voltage signals obtained from a dynamic frequency source and from a power system. Some test results are presented in the paper

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Instrumentation and Measurement, IEEE Transactions on  (Volume:48 ,  Issue: 1 )