The effects of the smoothing of the results on the measurement accuracy of RMS and powers in systems under nonsinusoidal conditions

Author

Langella, R. ; Testa, A.

Author_Institution

Dipt. di Ing. dellTnformazione, Seconda Univ. di Napoli, Rome

fYear

2008

fDate

Sept. 28 2008-Oct. 1 2008

Firstpage

1

Lastpage

6

Abstract

The effects of the smoothing of the results on the measurement accuracy of powers and RMS values in systems under nonsinusoidal conditions are considered. The presence of time measurement intervals of given rated duration is assumed. Suitable formulas to evaluate the errors introduced by the desynchronization of measurement interval for active power, and voltage and current rms values are developed. Then, the errors are evaluated in presence of smoothing of the results over a variable number of consecutive measurements by means of proper formulas, showing the improvements of accuracy that can be obtained. A numerical experiment based on experimental data concludes the analysis.

Keywords

power supply quality; power system measurement; measurement accuracy; measurement interval desynchronization; numerical experiment; power quality; root mean square error; Current measurement; Distortion measurement; Frequency; Pollution measurement; Power measurement; Power system harmonics; Signal processing algorithms; Smoothing methods; Time measurement; Voltage; Harmonic and Interharmonic Pollution; Power; Power Quality; Rms Values; smoothing;

fLanguage

English

Publisher

ieee

Conference_Titel

Harmonics and Quality of Power, 2008. ICHQP 2008. 13th International Conference on

Conference_Location

Wollongong, NSW

Print_ISBN

978-1-4244-1771-1

Electronic_ISBN

978-1-4244-1770-4

Type

conf

DOI

10.1109/ICHQP.2008.4668822

Filename

4668822