The flicker meter - IEEE Std 1453/spl trade/-2004

From the early days of electrification the voltage fluctuations and lamp flicker have been a concern in electric power systems. Indeed, as early as the 1920s, researchers were studying the effects of flickering lamp on human observers. They tried to correlate the reaction of these observers with the fluctuations in the voltages supplied to the lamps. After numerous experiments, traditionally using incandescent bulbs, a clear trend emerged that correlated the irritation reported by the observer to the measurable change in voltage supplied to the lamp. In graphical form, this correlation became known as a flicker curve. The method of quantifying the flicker levels from actual loads has been evolving since the creation of the first flicker curve. This paper presents the method defined in IEEE Std. 1453trade-2004 and discusses advantages over previously used methods