Overview of power electronic applications at utility and demand sides: sources of harmonics: utility devices and consumer loads. Various models for nonlinear and dynamic loads. High voltage direct current (HVDC) transmission system modeling. AC-DC load flow studies. Modeling of flexible AC transmission systems  (FACTS): conventional thyristor controlled reactors and phase shifters.  voltage source inverter (VSIl based static condenser (STATCON) and unified power flow controller (UPFC). Transient stability and sub-synchronous resonance (SSR)  studies incorporating superconducting magnetic energy storage (SMES) models. Modeling of utility interfaced photovoltaic and wind energy sources. Power quality. cyclic and noncyclic voltage flicker. Total harmonic distortion (THO) analysis. Remedial measures and harmonic load flow studies.