Simple model of flickermeter signal chain for deformed modulating signals
[ 1 ] Instytut Elektrotechniki i Elektroniki Przemysłowej, Wydział Elektryczny, Politechnika Poznańska | [ P ] employee
2008
scientific article
english
- amplitude modulation (AM)
- approximation
- flickermeter
- modeling
- power quality (PQ)
EN The flickermeter is an instrument designed to measure an obnoxiousness of a flicker. A flickermeter's signal chain is a mapping of the flicker sensing which occurs due to voltage fluctuations under some specific conditions of environment. A transformation characteristic of a flickermeter is given only as a sparse set of standard points. The more exact reproduction of the characteristic is possible with numerical simulations or on the ground of analytic description of the signal chain. This paper presents a simple IEC flickermeter model, consisting of set equations, for the case of modulation with deformed input signals. From these equations, it is possible to interpolate or extrapolate the transformation characteristic, to estimate the values of internal flickermeter signals, and to evaluate the effects of voltage frequency changes in a power network. The model of IEC flickermeter signal chain presented in this paper reliably reconstructs the measurements of obnoxiousness of the flicker caused by voltage fluctuations only for coiled filament gas-filled 60 W lamp as a light source.
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