Title :
Evaluation of the uncertainties in the measurement of distorted power by means of the IEN sampling system
Author :
Pogliano, Umberto
Author_Institution :
Ist. Elettrotecnico Nazionale Galileo Ferraris, Torino, Italy
Abstract :
A method for the evaluation of the uncertainties in the measurement of power in distorted signals is described. A sampling method is utilized for the acquisition of the signals and the power is computed from the harmonic components obtained by the best fit. An equivalent algorithm is applied to derive a simplified relation between the correlation matrix of the harmonics and that of the samples. The uncertainties are then evaluated by a model of the uncertainty in a single sample given by the manufacturer of the sampling voltmeters.
Keywords :
calibration; correlation methods; harmonic distortion; measurement uncertainty; power engineering computing; power measurement; power supply quality; power system harmonics; signal sampling; voltmeters; IEN sampling system; calibration; correlation matrix; distorted power measurement; distorted signals; equivalent algorithm; harmonic components; integrative analog to digital converters; measurement uncertainties; power quality; sampling voltmeters; software program; Analog-digital conversion; Distortion measurement; Frequency measurement; Measurement uncertainty; Performance evaluation; Power measurement; Sampling methods; Timing; Voltage control; Voltmeters;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2004. IMTC 04. Proceedings of the 21st IEEE
Print_ISBN :
0-7803-8248-X
DOI :
10.1109/IMTC.2004.1351419
