Title :
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
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;
Conference_Titel :
Electrical Power Quality and Utilisation (EPQU), 2011 11th International Conference on
Conference_Location :
Lisbon
Print_ISBN :
978-1-4673-0379-8
DOI :
10.1109/EPQU.2011.6128809
