High order harmonic suppression based on genetic algorithm

The wide use of different electronic devices and high-power impacting load in the power system produces heavy harmonics,which results in serious distortion of system voltage and current.The harmonic is also one of reasons for power system equipment overheat or failure.This problem can be well solved by installation of filters and SVC(static var compensator).Recently,with the application of AC/DC/AC adjustable speed drive system,more 35th and 37th-order harmonics were produced and affected normal operation of mill line seriously.The traditional filter design does not meet the requirements for harmonics suppression in this case.This paper presents an applicable filter design based on genetic algorithm.This new method not only absorbs high-order harmonics,but also compensates reactive power effectively.The manufacture time for the filters is shorter compare to the traditional design.This successful method has important technical and economic reference value to similar power quality control projects.