Abstract: “One of the power system problem is reducing the quality due to using semiconductor devices, that should be compensate. With regarding to compensation, different compensator exist, that one of is passive filter(LCL).One of aspects of power quality is voltage or current harmonic distortion, that THD(Total Harmonic Distortion) was used for obtaining it. Obtaining of optimized parameters of filter (L,C) is more effective on reducing the THD. In this paper Frog- Leaping and Chaos optimization algorithms on obtaining of L and C and reducing of THD were used simultaneity.”

Keywords: frog,chaos,compensation,optimization,passive filter