The widespread use of  adjustable speed drivers (ASD) in the petrochemical industry significantly increases the power-quality problems on the distribution network. Such problems  can be reduced by adding passive harmonic filters in the distribution system. This paper presents a method for design passive power filters installed at the point of  common coupling with ASD. The filter designed with the help of proposed method satisfies requirements of reactive power compensation and harmonic filtering. The design example illustrating the proposed approach is given. In the proposed example, more than 50% harmonic reduction and full reactive power compensation are achieved