Abstract
A simplified Voltage Peak Detection (VPD)-based flickermeter based on spectral decomposition is proposed in this paper to detect flicker caused by high-frequency interharmonic components which effect the illumination of next-generation lamps, such as LEDs and compact fluorescent lamps. The proposed VPD-based flickermeter is specially designed to be robust to fundamental frequency deviations, which is a reality of all power systems. The proposed flickermeter is developed using a sinusoidal voltage model and it is analytically shown that flicker depends on the additive effect of the amplitudes of all the interharmonic components. Flicker results obtained by the proposed VPD-based flickermeter, IEC 61000-4-15 flickermeter, and another spectral analysis based IEC flickermeter are all compared with both synthetic voltage waveforms and field data collected from parts of the electricity transmission system with intermittent loads such as electric arc furnaces. It has been shown that only the proposed VPD-based flickermeter is sensitive to the high-frequency interharmonic components in the voltage spectrum and they are not detected by the other flickermeters. In the literature, there is no flickermeter that considers the flicker effect of the high-frequency interharmonic components and gives accurate results in cases of fundamental frequency deviations at the same time.
Highlights
Light flicker, being one of the fundamental power quality parameters, is caused by low-frequency voltage amplitude fluctuations
A flickermeter that is recommended in [25] detects only the high-frequency interharmonic components
Deviationcomponent, for Low-Frequency identically distributedof at two fundamental frequency which leads to erroneous interharmonics
Summary
Light flicker, being one of the fundamental power quality parameters, is caused by low-frequency voltage amplitude fluctuations. This distortion of the enlightenment caused by voltage fluctuations has an irritating effect on people, which is measured by the method recommended in the IEC It is known that, in its present form, the IEC flickermeter is suffering from some deficiencies [2,3] One of these deficiencies is that the source and direction of the flicker can’t be determined. Some solutions are provided in the literature [2,3] Another problem with the IEC flickermeter is that there can be divergences in the measurements from the human perception [4,5].
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