Power quality considerations of heavy loads of CFL on distribution system

In This paper a new methodology for determining the influence of heavy loads from compact florescent lamps (CFLs) on distribution system is introduced. Thirty eight samples, consisting of 10 CFL in each sample were selected for practical test for 15,000 hours operation to determine the lamps´ performance. New comparison indices were introduced to rank the CFLs depending on the power system and consumers requirements. A new actual simulation model in PSIM computer simulation program for CFL is used to study the power quality of the power system for different loading of the CFLs. The actual simulation model interacts with the variation of the supply voltage due to voltage drop in the series impedance of the feeders and transformers. Simulation results show that the power quality of the distribution system is affected by a high CFLs loads.