Harmonic analysis is the process of measuring or calculating the relative amplitudes of all the significant harmonic components present in a given complex waveform. It is a key element in the assessment of power system supply quality. This book addresses novel analytical and modeling tools for the assessment of power system supply quality. Presents techniques for analyzing and resolving harmonic distortion problems such as overheating, motor failures, fuse blowouts, and inaccurate power metering. -- Discusses a major worldwide issue -- quality of power supply. -- Provides a source of the analysis techniques accepted by the main international committees and conferences focusing on this topic.