An iterative approach for analysis of harmonic penetration in the power transmission networks

An iterative process of computing harmonic voltage profile on a power system transmission network is presented. A method based upon frequency domain analysis is utilized in conjunction with the fundamental load flow computations. The concepts of conventional reactive power and the distortion power incorporated to determine interaction between the power system and harmonic generating sources. The model of the transmission system considered lends itself to the determination of the standing wave pattern and can be used in identifying the points of maxima and minima on the transmission line as well as the two end points. A phase shifting model of the transformer is presented for the harmonic analysis. Three examples of power transmission systems are taken to illustrate use of the algorithm