ESTIMATION AND ANALYSIS OF HARMONICS IN POWER SYSTEM

Abstract

A rapid increase in harmonic currents and voltages in the present AC systems due to large introduction of solid state switching devices. It is imperative to know the harmonic parameters such as magnitude and phase angles. This is essential for designing filters for eliminating and reducing the effects of harmonics in a power system. In the present work, An artificial neural network based approach has been presented to estimate the harmonic source currents injected into the system. Three-layered feed 'forward structured neural network was constructed with backpropagation learning algorithm. Neural network was trained and tested with the 18-bus example system, the results obtained from the tests showed acceptable estimates