A simple predictive method to estimate flicker

Albistur, Cristian; Aravena, Pablo; Morán, L.

doi:10.1109/ias.2013.6682605

Cited by 2 publications

(2 citation statements)

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“…8. If value of P st is >1, voltage flicker is detected [19]. Specifically, 300 waveforms (harmonic injection from 1 to 30% and each injection consists of 2–11 harmonic orders) are generated, and measured by the power analyser.…”

Section: Experimental Validationmentioning

confidence: 99%

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Investigation of severity of voltage flicker caused by second harmonic

Goh

Radzi

Hizam

et al. 2017

IET Science, Measurement & Technology

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Second harmonic produces asymmetrical waveform which leads to fluctuation of root-meanssquare (rms) value with certain frequency. Meanwhile, function of weighting filter in flickermeter is designed for sixth-order low-pass filtering function with frequency to be limited to 35 Hz, signal with frequency ranging from 35 to 100 Hz, at certain gain, still can pass through. Since the second harmonic produces fluctuation of rms value with 50 Hz, there is high possibility that it can be passed by this filter and thus resulting in flicker detection. Therefore, this study points out a worthwhile research gap to justify that the presence of the second harmonic can directly increase severity of voltage flicker. In addition, further simulation work using semi-converter has been carried out, as one of main even harmonic sources, in order to justify the concept. To practically validate the concept, Fluke power analyser 435 series II and programmable alternative current source are utilised in the experimental setup. In the main finding, it is confirmed that severity of the voltage flicker increases directly with the presence of the second harmonic and it also formed a clear relationship between short-term perceptibility (Pst) and percentage of the second harmonic component.

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Section: Experimental Validationmentioning

confidence: 99%

“…For further confirmation, IEC flickermeter [16–18] can be considered as it is widely used in industries for voltage flicker measurement [19]. Short‐term ( P st ) and long‐term ( P lt ) perceptibilities are assessed in the IEC flickermeter.…”

Section: Introductionmentioning

confidence: 99%