Signal conditioning for power quality

Author

Dimcev, V. ; Taskovski, D. ; Kokolanski, Z. ; Denic, D. ; Zivanovic, D. ; Simic, M.

Author_Institution

Dept. of Electr. Meas. & Mater., Ss Cyril & Methodius Univ. - Skopje, Skopje, Macedonia

fYear

2011

fDate

17-19 Oct. 2011

Firstpage

1

Lastpage

5

Abstract

In every computer-based power quality measuring system it is necessary to adapt the power line signals to the data acquisition (DAQ) card modules. Proper dimensioning of the signal conditioning circuit is essential because it strongly affects the measuring uncertainty of the system. The signal conditioning modules provide several functions, such as: attenuation, galvanic isolation, filtering, A/D conversion etc. In this paper, directions for proper dimensioning of the signal conditioning modules and proper selection of the sampling frequency and observation interval are given. Additionally, a prototype realization of a signal conditioning circuit and its characteristics are given.

Keywords

analogue-digital conversion; data acquisition; filtering theory; power engineering computing; power supply quality; A/D conversion; DAQ card modules; attenuation; computer-based power quality measuring system; data acquisition; filtering; galvanic isolation; power line signals; signal conditioning circuit; Attenuation; Current measurement; Cutoff frequency; Low pass filters; Power harmonic filters; Power quality; Voltage measurement; data acquisition card; power quality; signal conditioning;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Power Quality and Utilisation (EPQU), 2011 11th International Conference on

Conference_Location

Lisbon

ISSN

2150-6647

Print_ISBN

978-1-4673-0379-8

Type

conf

DOI

10.1109/EPQU.2011.6128809

Filename

6128809