| Abstract |
Voltage ftuctuations on powerlines caused by consumers with rapid fluctuating load are reduced by dynamic VAR compensators like thyristor controlled reactors (TCR). Delays in the signal processing due to the definition of power and the compensator itself result in poor reduction ratios of the fticker. This paper presents a new control strategy which is fitted to the human eye sensitivity curve for flicker. This, contrary to previous compensation methods, not only voltage fluctuations with low frequencies are reduced. Fast adaptive algorithms, applicated in communication engineering (e.g. adaptive channel equalisation, waveform coding, ...) up to now, enable optimal flicker reduction in the frequency range of human eye sensitivity. The reduction of faster voltage fluctuations requires a refined understanding of the relation between flicker and measured power, however. Reduction ratios of disturbing flicker up to factor 30 in the deterministic case can be achieved. |
