Title :
A virtual instrument for measurement of flicker
Author :
Caldara, S. ; Nuccio, S. ; Spataro, C.
Author_Institution :
Dipt. di Ingegneria Elettrica, Palermo Univ., Italy
Abstract :
All types of fluctuations of the r.m.s. voltage in power systems may be assessed by using a flickermeter which complies with the specification given in IEC-EN 60868. In this paper a digital flickermeter is presented based on the implementation in the frequency domain of the weighting filter block of the eye-brain simulation chain. The virtual instrument, implemented with an acquisition board inserted on a PC and with a software developed with the LabView tools, samples the voltage and furnishes the instantaneous flicker level and other severity coefficients. Results of simulated and actual data are reported to validate the performances of the developed flickermeter
Keywords :
computerised instrumentation; digital filters; digital instrumentation; digital simulation; electric noise measurement; flicker noise; frequency-domain analysis; microcomputer applications; signal processing equipment; smoothing circuits; virtual machines; IEC-EN 60868; LabView tools; acquisition board; digital flickermeter; eye-brain simulation; fluctuations; frequency domain; instantaneous flicker level; measurement of flicker; r.m.s. voltage; severity coefficients; virtual instrument; weighting filter block; Brain modeling; Demodulation; Frequency domain analysis; Heat pumps; IEC standards; Instruments; Low pass filters; Power transformer insulation; Umbilical cable; Voltage fluctuations;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1998. IMTC/98. Conference Proceedings. IEEE
Conference_Location :
St. Paul, MN
Print_ISBN :
0-7803-4797-8
DOI :
10.1109/IMTC.1998.679800
