PC BASED HARMONIC ANALYSER

Abstract

In this work presented the assessment of harmonic phenomena and their system effects is characterized by considering long-established harmonic sources and problems, and by detailing new and future sources and their probable effects. Harmonic distortion in electric power systems affects the whole environment, often at large distances from the original source. This work describes the method of harmonic evaluation. Establishment of frequency models for various system components is briefly covered. The sources of harmonics and their effects are also discussed. The technique of analyzing the propagation of characteristic harmonic currents in an AC system utilizes steady state AC analysis by means of the direct solution of the system impedance matrix at each harmonic frequency. In the present work, an FFT algorithms based approach has been presented to estimate the harmonic. Source currents injected into the system. Harmonic problem in electric power system is real time proposition. This has created a serious concern of utilities to bill the demand of consumers and questionability of conventional energy meters to record the decreasing response of most of the meters under increasing harmonics