Title :
Accurate measurement of line frequency in the presence of noise using time domain data
Author :
Lee, Jong-Hoon ; Devaney, Michael J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Missouri Univ., Columbia, MO, USA
Abstract :
A new technique for the accurate measurement of the frequency of sinusoidal signals in the presence of noise using time-domain data is proposed. This software-based method is based upon an estimation of the zero crossings and measures the elapsed time between an even number of the estimated zero crossings with smoothing. The method is iterative in that the sample rate is adjusted, in so far as its resolution permits, to be a multiple of the estimated frequency and this permits a progressive refinement of the frequency measurement
Keywords :
computerised instrumentation; frequency measurement; parameter estimation; power system measurement; waveform analysis; estimated frequency; even number; frequency measurement; power line frequency; sinusoidal signals; smoothing; software-based method; time domain data; time-domain data; Frequency estimation; Frequency measurement; Iterative methods; Noise measurement; Power system harmonics; Sampling methods; Signal processing algorithms; Smoothing methods; Time measurement; Voltage;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1994. IMTC/94. Conference Proceedings. 10th Anniversary. Advanced Technologies in I & M., 1994 IEEE
Conference_Location :
Hamamatsu
Print_ISBN :
0-7803-1880-3
DOI :
10.1109/IMTC.1994.351932
