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ABSTRACT
This paper presents a new efficient technique for estimating the voltage and frequency of power systems from digitized bus voltage samples. The new algorithm is based on the least absolute value error (LAV) approximation technique. The proposed algorithm is superior to the well-known least error squares technique (LS) used in Ref. 1, when the voltage samples contain bad data or noise in instrumentation and telemetry. The algorithm was tested on off-line simulated data. Results of the comparison between the least error squares technique and the new proposed algorithm are reported in this paper.